Experts Little Bretiier -werid 4cii. *239.99World Engines announced the production of the abovepictured World 4 channel radio quite some time ago,thinking that we were on the threshold of production.By the time the print dries on this advertisement wecertainly hope to have some of these systems into thehands of our dealers.

We produced this system with the thought in mindthat radios with mechanical trim cost less to producethan those with electronic trim, and that fa y going thisroute we could be competitive with some of the lowerpriced systems that are on the market today.

Actually, our friends at the OS factory made it possiblefor us to buy some of their metal bale type mechanicalstick assemblies at a very attractive price and we arepassing the advantages of this design on to the customer.

This system is being sold with a dry transmitter batteryarrangement — 8 pen cells which can be replaced with

nicads. Pen cell nicads can be popped into the cavitieswhere the dry batteries would normally go and thetransmitter will operate.

For the curious, we have placed some of the components that go into the system in front of thetransmitter, like the stick assembly, transmitter printedcircuit board, receiver and the servo.

The receiver that is with this system comes with anew decoder which is a definite improvement overanything that we have offered in any radio. The S-11servos that are going out with these systems havevery high torque motor and are much more efficient.

Our philosophy in building radios is to keep themsimple but high in quality. For this reason we stayedaway from changing crystals from one frequency toanother or trim panels; but on the other side of thecoin, we have always tried to use the best componentsthat we could get and the best nickel cadmium batteries.

We think we have set our systems up as tight if nottighter than many other manufacturers in regard tothe amount of dead band in the servos, return to center-capabilities and other things that actually relate toprecise control from transmitter to control surface.

These systems are using the new Mitsumi 1 pin connector which is not readily interchangeable with ourother systems; however, the connectors can bechanged and then the servos would be compatible.

Price of the 4 channel system with receiver, 3 servos,transmitter, battery charger, nickel cadmium batteryfor the receiver (transmitter is dry.) S239.95

A coupon will be packed in this system making thefourth servo available to the customer (mail in toWorld Engines) for S18.00.

Wdrid Engines8960 R05SASH AVE., CINCINNATI, OHIO 45236 • TELEPHONE (513) 793-5900 • INTERNATIONAL TELEX 214 557

WORLDSARKANSAS

Sherilll's House of Hobbies3904 West 13th. Street.Little Rock.AR. 72204

CALIFORNIA

Covlna Hobby Center140 N. Citrus Ave.Covlna. CA.91722

Evatt's Model Shop1636 Ocean Park Blvd.

Santa Monica, CA 90405

Franciscan Hobbies1935 Ocean Ave.

San Francisco, CA 91127

Hobby Co. of San Francisco5150 Geary Blvd.San Francisco, CA. 94118

Hobby Warehouse4128!^ South St.

Lakewood, CA 90712

Jim's Hobby Shop120 W. Holt Blvd.Ontario, CA. 91761

Smith Bros. Hobby Ctr.8941 Reseda Blvd.

Northridge, CA. 91324

Smith Bros. Hobby Ctr.16217 Victory Blvd.Van Nuys, CA. 91406

T & A Hobby Lobby3512 W. VictoryBurbank,CA 91505

COLORADO

Custom Hobbies2406 E. Platte Ave.Colorado Springs, CO. 80909

Tom Thumb Hobby Center7020 E. Colfax Ave.Denver, CO 80220

CONNECTICUT

Al's Hobbles54 Chestnut Kill RoadNorwalk,CT. 06854

Bristol Hobby Center641 FarmlngtonBristoL Plaza

Bristol, CT. 06010

FLORIDA

Action Hobbies

4301 N. Dixie Hgwy.Ft. Lauderdele, FL 33334

Art's Hobby Shop103-34 Atlantic Blvd.Jacksonville, FL. 32211

Farmers Sundries Si Hobbies4926 E. BroadwayTampa, FL. 33605

Field's Hobby Shop602 S. EdgewoodJacksonville, FL. 32205

Garand Hobbies

60S Wood Rd.Seffner,FL.33SB4

The Hobby House360 Hgwy.17-92Msitland,FL32 751

BEST HOBBY

DEALERS

HAWAII

The Hobbietat1423 Tenth Ave.Honolulu, Hawaii 96816

ILLINOIS

Al's Hobby Shop129 West First St.Elmhurst,11.60126

M nM Radiomodels5544 W. 147th St.

Oak Forest, IL. 60452

Slot & Wing Ltd.1914 B. Round Barn Rd.

Champaign, IL. 61820

Stanton Hobby Shop4736 Milwaukee Ave.Chicago, IL. 60630

West Side Hobby2629 West Main St.Belleville, IL. 62221

INDIANA

O&PHobbyWorid154-13AW. Hively Ave.Pierre-Moran Mall

Elkhart, IN 46514

Keuberger's Hobby Shop3Blks N. US 6 on lnd.331Bremen, IN. 46506

Hobbyland343 Lincolnway WestSouth Bend, IN 46601

Mutchler's Hobby4620 Crandell-Lanesville Rd.Corydon.ln. 47112ph. 812-366-3141

Spencer's Creft & Hobby2015 EwingSt. Rd.Seymour,IN.47274

KANSAS

Campbell Elecliic.& Hobby1003 E.llth StreetConcordia, KA 66901

Modeler Hobby Shop1726 S. Hillside

Wichita, KS. 67211

LOUISIANA

Hub Hobby Shop'2618 S. Broad Ave.New Orleans, LA. 70125

MASSACHUSETTS

Fisher R/C17 Salmi RoadFramingham, MA. 01701

Ray's R/C Specialties12 Sherman St.

Worcester, MA. 01610

MICHIGAN

Hobby World1049 28th St.S.W.Grand Rapids, Ml.49509

Joe's Hobby Center17900 E. lOMile Rd.

E. Detroit, Ml. 48021

Joe's Hobby Center7845 Wyoming Ave.Dearborn. Ml. 48126

Joe's Hobby Center33419 Grand River Ave.

Farmington, Ml. 48024

MICH. Con't

Rider's Hobby Shop115 W. Liberty St.Ann Arbor.MI.58108

Rider's Hobby Shop920 Trowbrldge Rd.E. Lansing, Ml. 48823

Trackside Hobbies

418 Main St.Rochester, Ml.48063

MINNESOTA

Medical Center Cucle

5640 W. BroadwayMinneapolis, MN. 55428

tJJy HI o

catalogueSl.oo

•■'■•riJBlKO:

WORLD'S CATALOG S1.00 POSTPAID

In our 78 catalog we paid special attention to listing engineparts for OS and Supertigre. These lists include both newand many engines no longer in production.

R/C EngineeringP.0.Bax14S1Sconsdale, AZ.8S252

CALIFORNIA

Authorized Redio Control Ser.915N.Mein St.Orange, CA 92887

L. R. Taylor & Co.10711 Batle Ave.Chetsworth.CA. 91311

GEORGIA

Hobby DistributorsP. 0. Box 102Avondale Est.. GA. 30002

Stanton Hobby Shop4734 MilwaukeeChicago. IL. 60630

MICHIGAN

Pete Waters31219 KendallLivonia.Ml,48154

MISSOURI

C.W.Reed5408Wood!on Rd,Raytown, MO.64133

NEW JERSEY

J. A. Deneke526 Doiemus Ave.Glen Rock,N.J.074S2

OHIO

Country R/C124S0 Amity RoadBrookville, OH 45309

SERVICEEXPERTSMr.GjHobby Shop4409 Uahoning Ave.Wanen, OH 444B3PENNSYLVANIA

Warren Hobby Shop1027 Pleasant DelveWanen, PA. 16385SOUTH CAROLINA

Bill's Teleironics1451 Bonner Ave.Co1uRibia,SC 29264TEXAS

Wilson's Hobby Shop2205 W. BeauregatdSan Angelo.TX. 76901CANADA

Charles LawDundas Hobby Supply16 Sleepy HollowDundas, Ontario, Canada

ENGLAND

World Engines. Ltd.Unit 10, Paramount Est.Sandown Rd.Watford, Herts, EnglandITALY

G 2 ModelsVia A DA Mestre,31Mestre, Venice. ItalyGERMANY

World Engines of GeimenyHelmut Noll4690 Heme2Hauptstr, 6West Germany

MINN. com.

Moon's Hobby ShopMiracle Mile MallRochester, MN. 55901

MISSISSIPPI

H&BModels319WestMBinTupelo, MS. 36801

NEBRASKA

Chick Bartlatt's Hobby Town134N.13lh St.Lincoln, NB. 68508

NEW HAMPSHIRE

Fitts Photo 8( Hobby ShopKings Hgwy PlazaStratham.NH. 03885

NEWJERSEV

Hobby Hut567 Rte.23Pompton Plains, NJ 07444

Paul's Hobby Sport 8i Marine540-546 Peterson Ave.E. Rutherford, NJ. 07073

NEW YORK

Brown's Hobby Center6031 BroadwayBronx, NY 10471

Mardel Hobbles351 Altamont Ave.Schenectady, NY. 12303

NORTH CAROLINA

The Hobby House1617Ashville Hgwy.Hendersonville, NC. 28739

NORTH DAKOTA

McGiffins1228 9th Ave. S.Grand Forks, N.D. S82Q1701-772-5311 or 772-5380

OHIO

Airport Hobby Shop1889 Triplet! Blvil.Akron.OH. 44312

Hobby Stop4907 Summit St.Toledo.OH.43611

Lafayette Escadrille Hobbles*1414 South Ave.Toledo, OH. 43609

National nobby. Inc.5238 Ridge Rd.Cleveland, OH 44129

Mark Riba Cabinets32094 Detroit Rd.Avon.OH44Q11

W-K Hobbies19 N. Main St.Centerviile, OH 4S459

Wife's Hobby Shop712 BristolLime. OH 45804

PENNSYLVANIA

Groff's Hobby Shop115 E. State St.Quarryville, PA. 17566

J.C. R/C Hobbies23 Easton Rd.Willow Grove, PA 19090

PENNSYLVANIA Cont'd

Skelly Sporting Goods2227 W. Market St.York,PA. 17404

SOUTH CAROLINA

Bill's Teletronics1451 Bonner AveColumbia, SC 29204

TEXAS

H. Hobbs4615 Banister LaneAustin, TX 78745

Stew's Hobbies1301 Custer Rd., Suite 250Piano, TX. 75075

VERMONT

The Hobby ShopRFO No.1,Rte7Swanton, VT 05488

The Hobby ShopBurlington Square MaltBurlington, VT. 05401

Midd-Way Shop57 Main St.Middiebuty, VT. 05753

VIRGINIA

Bob's Hobby Canter3002 W. Gary St.Rinhmond. VA. 23221

WASHINGTON

B & B Hobbles (Bruce Bstd)907 E. FrancisSpokane, WA. 99207

Firgrove Model Supply10611-136th St.,E.Puyallup.WA 98371

Stewart Enterprises429 W. Chelan St.Wenatchee.WA. 98801

WISCONSIN

Pope's Hobby Land640 S. 3rd St.Weusau.WI.6440l

CANADA

B&B Wholesale Alberts, Ltd.1902-27 St..S.W.Calgary, Canada

Calgary Hobby Supply3920 Edmonton Trail N.E.Calgary, Alberta, Canada

Can-Air Hobbies2363 Baaubien St. EastMontreai, Quebec, Canada

Le Models Reduit Enr.265, LaroucheArvida, Quebec, Canada548-2136

Marcoux Hobbies5 DuchesnayBaauport, Qua., Canada

ITALY

6 2 ModelsVia A DA Mestre, 31Mestre, Venice, Italy

Wdrld Engines8960 ROSSASH AVE.. CINCINNATI, OHIO 45236 TELEPHONE (513) 793-5900 TELEX 214 557

J FOR WHAT IT'S W0RTH\Ever had a problem with trying to get

pins Into spruce framing for fuselagesides on something like the VK Nieuportor one of Lou Proctor's Antics? Using asmall hammer Is, a help, such as theolder metal ones that come in childrenscarpenter sets, but driving them intospruce, the pins bend so easily that youcan go through a box of pins In anevening. My solution to the problem wasto cut a short length of brass tubing(1/16" fits the pins that I use) just thethickness of the wood shorter than thepins being used. Place the pin inside thetubing, aim it at the right spot and drive ithome. The pins seldom bend.Admittedly you then have to pull the pinout, remove the tubing and replace thepin, However, with the hole alreadymade, it goes in quite easily — suresaves on the pins and the frustration.Submitted by Dick Phillips of PrinceGeorge, B.C., Canada.

After building a Kadet and flying it afew times, Elmer McKay of Norfolk,Virginia, found that he had broken ablind nut. it would be impossible to get toit without removing a section of thebottom area aft of the firewall. To solvethe problem, Elmer held that part of theengine mount (see sketch) on theaircraft by using a sheet metal screwinstead of the 6-32 screw that came withit. To date, many flights have been puton the aircraft with no problems.

.BROKEN PART

BUND NUT

BROKEN PARTREMOVED —SHEET METALSCREW

SUBSTITUTED

Harris Barron of Brookline,Massachusetts, submitted the followingideas which he has found to be veryhelpful in his modeling activity.(1) Molded nylon fittings (control horn,

clevises, wing hold-down bolts, props,etc.) can be color related to the aircraftfinish by simply boiling the trimmed partsin an aniline dye solution suitable forsynthetic textile dyeing. First, degrease

with a detergent bath; then boil for about5 minutes In the desired color dye bath.Rinse and dry. Increasing dye quantityresults in deeper color.(2) 1/64" three ply plywood makes

excellent gussets for sturdy, mainframeopen stick, old timer type construction(a-la full-size wood rib technique). Keepgrain vertical (as in sketch) use aliphaticresin, cyanoacrylate, orepoxy and applyto inside face of structure.

Max G. Hurst of Collinsville, Illinois,submitted the following suggestion toshare with other modelers. One Kraft

hinge (part #200-105) cut into 4 piecesas shown will make the right number oflanding gear hold-downs for the normalsize pattern ship. The hole size andspacing are exactly the rightdimensions.

o

GUSSET

CUT

KRAFT HINGE

#200-105

CUT IN MULTIPLESSIZE TO NEED

Check around in your area for asporting goods store that sells andrepairs graphite fishing rods. The centersections from a broken rod are unusablefor repair and therefore should be freefor the asking. The graphite sections arehollow and can be used as pushrods thesame as arrow shafts. The advantages(besides being free) are that the graphiterod sections are lighter and strongerthan arrow shafts of balsa squares. Usethe graphite sections just like arrowshafts (see sketch). Earl M. Sieggen ofLeawood, Kansas, states he has usedthe graphite rods in two airplaneswithout any failures. There has neverbeen any noticed trim creep due totemperature changes (Earl states hehas never run any actual tests).

Being a beginner in R/C, Paul M,Hopkins III of Yuba City, California, hadtrouble keeping bulkheads and ribssquare. By using a 2" corner brace, youhave an inexpensive square. These canbe purchased in any hardware store andin many sizes to suit the situation. Seethe diagram.

BULKHEAD

.CORNER

oBRACE

o

' '

o

FUSELAGE

SIDE

CONTROLHORN

BROKEN

GRAPHITE

FISHINGRODSECTION

WOODENPLUGEPOXIEDIN PLACESERVO

WOODENPLUG

CARVEDTO FIT

SNUGLY

oEND VIEW

o

o

A very successful engine nut plate hasbeen used by D.A. Michael of Lykens,Pennsylvania. It has been used on .020up to .051 size engines. The plateconsists of surplus copper clad boardused to make etched circuits. The

copper clad board can be purchasedfrom Radio Shack and most likely anyradio parts store. It is very Inexpensivefor a nice size piece which will makemany nut plates. Cut out the size platerequired for your installation and drillyour mounting holes along with severalother extra holes at different locations in

plate. Install mounting plate on enginewith bolts and nuts. Solder nuts on

copper side and then remove. Scratchthe un-copper side of the board (forbetter adhesive holding) and epoxy toback side of firewall. Extra holes In board

are for holding strength for the epoxy. Itwill fill In holes and make a better bond.

Take some sillcone grease or petroleumjelly and spread on screws. Tightenscrews through firewall and this willinsure a good tight bond for the epoxyand the lubricant will keep the epoxyfrom binding up the mounting screws.When ready to mount the engine, put asmall dab of sillcone seal on screws to

keep fuel out of the fuselage. Use 2-56hardware on .020 engines and 4-40 on.049-.051 engines.

BOLTS

NUTSCLAD

BOARD TO COPPER

o

For those owning a Kavan starter andwho also like to operate with minimumground support equipment, GeneHughes of Sacramento, California,suggests packaging your 12 volt powersource on the rear of your starter. (Seesketch.) Total length IIVa" — weight33oz. Modification Is simple and requiresminimum effort and tools with cost

running approximately $22.00. Then tenpencel l nicads (Radio Shack) fitperfectly Into the new Right Guard

, plasticstickdeodorantcontainer. Plasticcontainer is held to starter with R/C 56

glue and won't come loose with thenormal R/C knockabouts. Screw top ismounted aft to allow easy access for anymaintenance or charging (aux. power Inemergency) and Is mounted in center/aftof end grouping of 5 cells with sillcone

/FOR WHAT IT'S WORTHYREAR OFKAVAN

STARTER

RIGHT GUARDSTICK DEODORANT

CONTAINER

SILICONE'ADHESIVE

\ \«■

R/C 56'GLUE

5 NICADPEN CELLS(12 VOLTS)

CHARGINGJACK

SCREWCAP

CHARGINGJACK

NICAD

POWER

adhesive. Both groups of 5 cells are heldtogether with silicone adhesive toprovide Insulation and the flexibility forsliding power package Into container.Power supply provides torque equal toyour 10 pound lead acid battery withmore than enough starts for an activeweekend of flying. It's great for racingwhere you want minimum supportequipment about.

Ethyl (rubbing) alcohol has many usesin the modeler's workshop. A few ofthese uses have been submitted byCapt. T.D. Hudson of Homestead AFB,Florida. (1)To dilute epoxy (use a50/50 mixture) for fuel proofing tankcompartments, firewalls, etc. Simply thindown and brush on to desired thickness.This thinned mixture penetrates thewood much better and cuts down on theweight since the alcohol completelyevaporates. Use alcohol to clean thebrush when finished.

(2) When repairs to your plastic filmcovered model are necessary after a fewflights, use alcohol full strength to cleanoff all traces of exhaust residuesurrounding the repair area for a muchbetter bond of the new coveringmaterial.

(3) Use full strength on a cleaning ragto remove those ugly epoxy finger printsor smears on plastic film coveringmaterials when finishing up a model.

(4) Spray on full strength and wipe offwith paper towels for a sparklingclean-up job on your model after flyingsessions. Removes all traces of residue

on your airplane and really shines up thefinish.

Rebecca Phelps of Wilmington,Delaware, states that she is that rarity, awoman In the hobby. The first timeRebecca tried to put down fiberglasscloth with epoxy she found It to be anightmare. The problem of getting thecloth to stay put and to absorb the epoxyis nicely solved by directing a hair dryeror heat gun at your epoxy brush as youstrike It on. The heat makes the epoxypenetrate the cloth instantly and makesit flow easily enough that you can put ona coat thin enough that It won't fill 3/4 oz.cloth in one application, It doesn't workto heat your epoxy mixture, It just sets uptoo fast. But heating the area you arepainting works just great. One word ofcaution: Work in a well-ventilated roombecause of the fumes released byheating the epoxy.

E. Scott Hinckley of Provo, Utah, hashad a problem with losing the insert outof his Cox Conquest .15 RC muffler.Even with tightening the muffler insert asmuch as possible and balancing thepropeller, It still came out In flight. To fixthis, he assembled the muffler anddrilled a #50 hole (1/16" is fine) throughthe back of the muffler body and the thickflange of the insert. The hole was thentapped with a 2-56 self-tapping screw.Scott has not had any protilems sinceand the fix Is not visible as the hole wasdrilled on the bottom of the muffler. □

All items appearing in Showcase 78 arepress reieases supplied by the manufacturer of the product andlor their advertising agency unless otherwisespecified. The appearance of an item inShowcase 78 does not necessarilyconstitute an endorsement of that product by R/C fvlodeler Magazine.

ELECTRIC CAR CHASSISA new 1/12 scale electric car chassis

designated E-45 has been introduced byElectro Craft Systems. This chassis Ismade from laminated fiberglass and canbe used to build a very strong andcompetitive electric race car. Theadvantages over metal chassis are thatit does not bend or deform permanentlyand that electrical (RF) Interference withthe receiver is minimized. The chassis iseasily assembled and is pre-drilled forstandard MRP 1/12 scale components.It easily adapts to other front and rearend parts such as Marker. A built-inbattery pan simplifies installation of 4 or6 cell battery packs, The electric carchassis retails for $11.95 and ismanufactured by Electro Graft Systemsas part of a complete line of 1/12 scaleelectric conversion parts as well ascomplete electric cars andsub-assemblies, including the famouscompetition speed control PSC-9FR,winner of numerous Class D electric carraces, Including West Coast andNational Championships. For furtherInformation, send 250 to Electro CraftSystems, 924 Ferngrove Dr., San Jose,California 95129. Dealer inquiries areinvited.

QUALITY WORLD OF BOLINK

BoLINK takes you back to the goodold days! Remember the '32 FordTudor? BoLINK has It In 12th scale.1978's most unique body style! Madefrom Tuffak — available clear or painted.Interior also available. Also available is a77 Ford pickup truck ■ - • be the first inyour club, Send $1.00 for a complete

catalog and discover the "quality worldof BoLINK." $2.00 credit with firstpurchase over $10.00 when you ordercatalog from BoLINK, P.O. Box 80653,Atlanta, Georgia 30341.

HUSON 36

Dumas Products, Inc., 901 East 17thSt., Tucson, Arizona 85719, presents anew RC modei sailboat kit, the Huson36. Built to the AMYA 36/600 class rules,the Huson 36 kit contains a whitefiberglass hull and deck to be joined bythe modeler, keel weight, rudder, hatch,wood to shape mast, boom and jib club,dacron sails and hardware. A realisticmodel of a typical 28'-34' full sizecruising sailboat, the Huson 36 can bethe center of many hours of fun orcompetition for anyone. Kit uses any 2channel proportional radio and DumasSail Control Unit #3701 (not included).

THE HYDRALOCK

Idea Development has announcedtheir latest "think tank" product for R/Centhusiasts — The Hydralock — adevice that converts air driven retracts tohydraulic operation. Containing a loughneoprene bladder and weighing onequarter ounce, the Hydrolock is installedIn place of the "T" fitting in the pressureItne(s). The Hydralock is filled with oil, asare the pressure lines to the gear, andthe air side of the system is then used asa force to move the oil, accomplishingthe hydraulic function. Hydralocks stopgear sag-out in high G maneuvers, endlanding collapse, and offer the added

feature of lubricating the system andprolonging the life of the O rings. Bonusfor the scale modeler is that Hydralocksare adjustable for any speed ofretraction (and extension) from twoseconds to one full minute travel time in

either direction. While one Hydralock willhandle the gear in a trike airplane. IdeaDevelopment suggests the use of twobecause of wing removal. The ultimateinstallation on any ship would be the useof two Hydralocks for each gear leg.Serious scale modelers, and othersinterested in precision flight, will find theHydralocks useful for flap application toobtain realistic transition from take-off toflight speed, and vice versa, and applythem to such uses as retracting the turreton the Stafford B-24, closing andopening the canopies on Navy aircraft,etc. Priced at $8.00 each, two for $14.00(postpaid). Hydralocks are availabledirect only from Idea Development, Inc.,P.O. Box 7399, Newark, Delaware19711.

1^ -««■(,

1MODEL BOAT HARDWARE

Metal Concepts, Inc., P.O. Box25596, Seattle, Washington 98125, isnow offering the serious competitionmodel boater a line of high qualityhardware for ,40 and .60 size racingmodels. Among the Items available are;a heat treated rudder and shaft fromstainless, a strut with mounting featuringneedle bearings and aluminum andstainless construction, skid fin andbracket from stainless, exhaust couplersfor the OPS .60, OPS .40 and K & B .40,and mufflers for the end of tuned pipes.Special items will be quoted if a sketch Isprovided. You must be satisfied with thematerial you receive or a full refund willbe provided if the items are returnedwithin 10 days. A complete list of itemsand prices wiil be sent upon request.

FIGHTER ACES OFTHE LUFTWAFFE"

All the great Luftwaffe aces arerecorded In Fighter Aces of theLuftwaffe by Col, R.F. Toliver and T.J.Constable. From Hartman and Barkhorn(352 and 301 confirmed victories) tothose with the qualifying requisite of 5'downings' — many of the aces arereviewed at iength with fascinating detailwhile others can only be spared

100

relatively brief 'thumbnails.' The authorshave skillfully grouped their charactersinto the various war-fronts and battie

time-frames so that while they arepresenting personal biographies, theyare simultaneously recording thehistorical progress of the air-war overthe entire Europe / Asia / Africa theatersof WW il. Their orderly presentation oftheir massive research is outstanding.The book contains 432 pages and 283photos. The price is $17.95 and isavailable from Aero Publishers Inc., 329West Aviation Rd.,Fallbrook,CA 92028.

SIG COLT

Sig Manufacturing Co.. Montezuma,Iowa 50171, introduces their Sig Colt.For .09 to . 15 engines, it has a 45" wingspan and 290 square inch wing area. Itfeatures a flat-bottomed molded foam

wing, built-up fuselage, sheet balsa tailsurfaces, and room for standard sizeradios. A scale-like (sorta-Cessna)sporster for Sunday fliers that combinesthe convenience of ready-to-use foamwing with the strength and durability of abaisa fuseiage and tail. Can be usedwith 2 or 3 channel radio. Available from

Sig Manufacturing for $20.95.

HOBBY LITE

Take the strain out of electronic

assembly. Use the new tool. Hobby Lite,to light up circuits, transistors, or anyother detailed area you are working on.Once you use it, you'll wonder how youever got along without It. The Individuallyground, precision tips allow you to see

and handle the most intricate jobs.Hobby Lite is made of finest surgicalgrade, stainless steel. A twist of thehandle provides pinpoint illumination.The barrel and knurl are made from solid

brass, then chrome nickel-plated. It isfinely balanced to fit the hand perfectlyand Is guaranteed neverto rust, corrode,or tarnish. Hobby Lite is the product ofthe A.E.N. Enterprises, 558 E. LambertRd., Brea, California 92621.

NORTH AMERICAN F-86

Air-Forms, Inc., 201 W. Yucca, Clovis,N.M. 88101, presents to you theexcitingNorth American F-86 in ducted fan form.

This kit is designed for the Sunday flyerand serious scale modeler alike. It can

be built and flown on a modest budget,or given the full treatment, be a winner inany Stand-Off Scale contest. Theirconcept, with this first offering, is to bringthe reaim of jet aircraft to the averagemodeler without destroying hispocketbook. Other jet aircraft will followas they are developed, always keepingin mind the needs of the sport modeler.The kits are designed to be light, easy tobuild, and have a minimum number ofparts. All balsa parts are machine-cutand selected for lightness and strengthas required. The fuselage is lightweightepoxy-glass and the wing cores arefoam. Tail surfaces are sheet balsa.

Decals and proof of scale are furnishedin the kits. Landing gears are pre-bentand a scaie canopy is provided. Alongwith the usual plans and buildinginstructions, they take you through theinstallation and flying aspect of ductedfans. There is a special section onincreasing the performance of youraircraft at minimal cost, other enginesand their performance ranges, flyingtechniques unique to ducted fan aircraft,and other practical ideas. A fan unit isnot included in each kit. A 4 channel

radio is required. The F-86 flightperformance is as a jet fighter should be!The light wing loading and low overallweight combined with a non-criticalairfoil result in flight response that isexcellent. Depending on your resourcesand desires, you can power the aircraftwith a regular front rotor .40 or move intothe newer ABC type racing engines.Available through your dealer or orderdirect. Price $134.95.

SCALE SAILPLANES

Have you heard what is happening inscale sailplanes? This year, Windspiel

Models, Route 3, Box 457, CoeurD'Alene, Idaho 83814, will be importingseveral king size saiiplanes 1/4 and 1/5scale. These are the finest models made

in the world. Completely finished readyto cover and paint and install your radio.These planes have epoxy glassfuselage with carbon glassreinforcement, completely finished foamcore balsa sheeted wing with carbonfiber spars, ailerons and spoilers and, insome cases, flaps are completelyinstalled. All tail feathers completelyfinished and ready for installation. Theseplanes also feature fully retractablelanding gears. They consist of 1/3 scaleDG-100 limited standard class sailplaneexactly like the prototype, wing span 5meters. DG-200 unlimited standard

class with flap, wing span 5 meters. TheASW-17, wing span 6.70 meters, andthe SB-10, wing span 7.50 meters.Some other 1/4 scale planes are asfollows: H-101 Salto, SB-10, DG-100,Kestrel, 604, Mosquito, Libeile, FS-25,HP-18, Pirat, ASW-17, to name a few.Also available will be several 1/5 scalesailplanes which will be seml-flnishedplanes and several kits. They also will bestocking fuselage, plans, canopies, etc.Planes that are currently available are:ASW-19, ASW-20, Nimbus, Janus,Blanik, LS-2, Standard Cirrus, SlingsbyVega, SB-10, Orinth, LS-1C, Mosquito,and ASW-17. Windspiel wilt also becarrying retractable landing gears whichare well suited for the 1/6, 1/5, 1/4, and1/3 scale sailplanes: also spoilers,linkage and electronic mixers. Forfurther information, contact WindspielModels.

EXCALIBER II

R/C Glass, 1628 Corona. Medford,Oregon 97501, is now offering afiberglass version of Jerry Dunlap's1977 N.A.M.B.A. National OutboardChampion, the Excaliber II. TheExcaiiber II is a 25y2" picklefork tunneldesign incorporating a special tunnelsection developed by Dave Knowlen,designer of record holding limitedhydroplanes, in addition to its nationalvictory, the prototype Excaliber 1! wasN.A.M.B.A. District 8 Outboard HighPoint Champion, established an ovalcompetition record and became the firstoutboard to be officially timed at over 40mph. The fiberglass Excaliber II from

101

R/C Glass incorporates the provendesign concepts developed in thewooden prototype plus destinctlvecowling styling made possible throughfiberglass molding. Completelyassembled with a removable cowling,the Excaiiber II is available in white gelcoat or metal flake finishes. Hull

construction Is from glass cloth usingquality hand lay-up throughout. Plywoodreinforcement for the transom and turnfin is glassed into the hull. Plywood forbuilding -a radio compartment andplexiglass for the radio compartment lidIs also included. Radio Installation canbe accomplished through the use of aremovable waterproof radio box or abuilt-in radio compartment. The newAuto Trim engine adjustment kit fromK & B Manufacturing is easily installedin the Excaiiber II. The gel coatedExcaiiber II retails for $70.00. A metalflake deck, white gel coated bottomversion is $75.00 and an all metal flakeversion is available for $80.00. Pleaseadd 5% to cover cost of handling andshipping. Dealer inquiries arewelcomed.

NEW ELECTRONIC SWITCHThis new all electronic switch is a Pro

Una exclusive. Modern CMOS logic andquad comparator IG's drive powertransistors In each of four channels; iteliminates a lot of mechanical problems.Integrated fail-safe circuit switches allchannels "Off" should transmitter orreceiver signals stop. Can switch 10amps per channel, total of 25 amps forall four channels. Minimal receiverbattery drain of less than 30 ma. Forcomplete details and price, write to: ProLine Electronics, 10632 N. 21st Ave.,Suite 11, Phoenix, Arizona ,85029.

DU-BRO MUFFLER STRAPSThese non-breakable steel muffler

straps are adjustable to fit most mufflersand engines from .29 to .80. The kitcontains 2 straps and a 1", 4-40 sockethead bolt, nut and lock washer. They are$1.50 (1 per bag) and are available fromDu-Bro Products, 480 Bonner Road,Wauconda, Illinois 60084.

6" MUFFLER EXHAUST

EXTENSION STOCKThis is a much needed item that can

be used for planes, boats and even cars,This is the same aluminum stock that theDu-Bro Muff-L-Aire is made from and willfit any engine from .29 to .80. Themodeler can cut to length, bolt, tap andweld this stock to either adapt it to hisown muffler or use the universal Du-BroMuff-L-Aire. Du-Bro baffle plate sets andmuffler straps are new items that arealso available and compatible with the6" extension stock. Priced at $3.95 (1per bag), they are available from Du-BroProducts, Inc., 480 Bonner Road,Wauconda, Illinois 60084.

radios. A long 113" polyhedral winggives positive spiral stability, quick rollresponse and a floating glide. Spoilersprovide pilot control of descent rate andapproach glide angle. The large ellipticalstab gives hands off pitch stability andpowerful pitch control making TheCalifornian equally at home with expertand novice alike. The beautiful,completely finished plastic fuselage, isvery rugged to shrug off a beginner'smistakes. Wing span 113", wing area850 square inches, total surface area1000 square inches, weight 40 ounces,price $69.95 from your hobby shop ordirect from Astro Flight.

THE CALIFORNIAN

The Californian introduced by AstroFlight Inc., 13377 Beach Ave., Venice,California 90291, is a high performancesailplane designed for 2 or 3 channel

SAIL CONTROL ARMS

Sail Engineering supplies sail controlarms for all classes of model yachts.Arm #1 is our standard arm as suppliedwith the SE-18 and SE-2S type sail controls. It is suitable for 12 meter, 50/800yachts and others of similar size and sailarea. Arm #2 is suitable for the sameclass of yacht as Arm #1, but is utilizedwhen a traveler rig is used. Arms #3 and#4 are used for 36/600 size yachts —#4 being used when a traveler rig isemployed. Arm #5 is an all-metal armwhich is used on J boat and A boat classyachts. It is also suitable for the SantaBarbara class. The following are the current prices on the arms: Arm # 1 sells for$5.95; Arms #2-3-4 each sell for $4.95;and Arm #5 sells for $6.75, Availablefrom Sail Engineering, P.O. Box 8439,Richmond, Virginia 23226.

NEW ELECTRIC DRIVE KITS

Dumas Products, Inc., 901 East 17thSt., Tucson, Arizona 85719, have comeout with two new Electric Drive Kits topower many of their 12" to 22" modelboats. Electric Drive Kit #2330 Is for 12"to 16" models and contains a 3 volt D.C.motor, coupling, shaft, shaft tube,propeller and rudder and sells for $4.50.This kit is perfectly suited to the Dumas12" Harbor Patrol boat. Cabin Cruiserand Speedboat kits which sell for $3.85each. Electric Drive Kit #2331 is for 16"to 22" models such as the Dumas 18"Cabin Cruiser, Deep Vee 10 and SkeVee 10. The kit, which sells for $12.50,contains a 4.8 volt D.C. motor, coupling,shaft, stuffing box, rudder, rudder armand propeller. A 4.8 or 6 volt battery Isrequired (not included). Performance issurprisingly good, and modelers of all

102

ages will certainly get more enjoymentfrom these small models when the

power Is applied. The Electric Drive Kitsare available at your hobby shop.

-

.40 SIZE ENGINE MOUNT

A new .40 size Engine Mount isannounced by Fourmost RacingProducts, 4040 24th Avenue, ForestGrove, Oregon 97116. This mount Is acontinuation of the successful

wrap-around design of the .049 AirfloMount. This design, combined with asuper rigid glass filled nylon compoundcreated the strongest, vibration free,molded airplane front end available.Aerodynamic efficiency is also Improvedthrough reduced drag around theengine. The Airflo ,40 Engine Mount Isideal for Quicky Type Aircraft as thefirewall face Is IVi" square. Price Is$5.25.

KAVALIER KIT

Designed by Claude McCullough theKavalier has a 56" wing span for .29-.40engines. A special wing gives superiorstability and control. Built-up balsaconstruction has built-in washout. Easyto assemble as usual on a flat surface.

The precise amount of incidencechange required to help eliminate tipstall is automatically incorporated.Differential aileron control horns.

Provided pre-formed, ready-to-use for

less down, more up aileron movement.Thick, semi-symmetrical airfoil forstrength and high lift. Find out whatsmooth flying really Is with the Kavalier.Make coordinated, in-lhe-groove turns.Flare out for slowed down landings onthe main gear with no tendency to stall orsnap roll. Best of all, this extra reserve ofstability does not reducemaneuverability. So the Kavalier makesan excellent stunter and all round sportflier also. From Sig Manufacturing Co.,Inc., Montezuma, Iowa 50171. Price$39.95.

m

RECHARGEABLE BATTERYGEL TYPE

12 VOIT 4S AMP. HOini

aiTiiapuBNnne.

12 VOLT 4 AMP GELL CELL

Astro Flight, Inc., 13377 Beach Ave.,Venice, California 90291, now hasavailable their 12 volt 4 amp Gell Cell.Designed for your field box, it is lightweight and sealed so you don't have toworry about spills and can rely on havingyears of trouble free service. Six volt, 4amp and 7 amp batteries also availablefrom your dealer or order direct. Price$24.95.

•tSSss

AERO-POXY

Pactra Industries, Inc., 7060Hollywood Blvd., Los Angeles,California 90028, offers a new line ofspecially formulated, 2-componentsystem finishes that are designed tohandle the special problems of gaspowered model builders. Aero-Poxy'ssuper tough, totally fuel proof,mar-resistant, one-coat "armour, finish"

is designed to endure the punishment ofrough handling, wear and fuel spillage,without affecting its durability or goodlooks. Pactra points out that their uniqueformulation utilizes a non-irritating andnon-sensitizing curing agents, thateliminates dermatitic or respiratoryproblems, and that Aero-Poxy is free oflead hazards and non-toxic when dry.Aero-Poxy consists of a Color Base,available in Phantom Black, RadarWhite, Rocket Blue, Solar Orange,Fighter Green, Trainer Yellow,Marauder Red, Sabre Aluminum, GlossClear, and Primer {8 ounces only), and achoice of a Super Hi-Gloss Catalyst or aFlat Catalyst, to give modelers versatilityof finish and color mixing capabilities.Suitable for brush or spray application.Available in 4 oz. cans, 8 oz. cans, plusthinners for brushing and spray In 16 oz.and 32 oz. cans.

PHOENIX

NEW REVERSIBLE

SPEED CONTROLLER

Minimal power needed to vary speedand direction of D.C. motors with ProLine Electronic's new electronic speedcontroller. A linear proportionalcontroller with modern CMOS logic andquad comparator IC's gives proportionaland bidirectional control with no

mechanical linkages, servos or contactsto service. Fail-safe circuit Insures zero

speed should transmitter or receiversignals stop. Electrical ratings aredependent on the cooling technique ...with water cooled heat sinks: maximum

25 amps, 15 amps continuous. Withoutheat sinks 10 amps continuous.Maximum switchable voltage is 30V.DC. Receiver battery drain is less than20 ma. For complete details, write ProLine Electronics, 10632 N. 21st Ave.,Suite 11, Phoenix, Arizona 85029.

103

MUiTd^HlER] S HIOiiBIES 4620 Crandell-Lanesviile Road I hours I siNO FOR free listingsRR3, Corydon, Ind. 47112 I weekdays I with all kits, radios.Phone-812-366-3141 I 9-5 I accessories 4 prices.

-ACE R/C-

AlphaAcs HighUpjtart MAll StarMach NoneShrikeGuppyGLH II (balsa wing)GLH II (Foam wing)Llttllett StickSuper PacerPacerDick's DreamWhlaardFoam Wings

-AIRTRONICS-Gere SportQuestorSuper QuestorCessna Centurian ARFCadet 62New Era IIIAero StarSquare SoarQ-teeOlympic IIAquilla

-A-JUSTO JIG-Full House<wing&fuse]

■ANDREWS-AeromasterA-RaySportsmaster

■ASTRO FLIGHT-ASW tSASW 17Super MonteraySuper MallbuBushmasterFournler

-BRIDI-AT 6 TexanDirty BIrdy (glass)Dirty Birdy 60 (wood)Dirty BIrdy 40 (wood)Basic TrainerRCM Trainer 10RCM Trainer 20RCM Trainer 40RCM Trainer 60Quicklest 200Quickiest SOOSuper Kaos 40Super Kaos 60KaosSportsterTweedy BirdCompass CopeSun Fll 4-20

ALSO

(Pt)

SRIDI:Super FllClassic 40Soar BrIdIWacoUFOCOVERITE:Glaskole (Vipt)Glaskote ThinnFLITE LINE:Skooter IISkooter II (racing)R/C KITS:F100STRICK'S:Power mile disc Sander

" " ■■ "MK IARCO:'/alb, no.64A-JUSTO JIG:■/>A RetractsPERRY;PumpPump Carb.Cox Flight Power qts.Cox Glow Power qts.

11.9511.9SI0.9S14.9411.9517.9S

S.9S1 1.9510.952.95

19.9511.956.95

11.952.07

25.9523.9526.9536.9523.9535.9559.9517.9515.9534.9547.95

52.9529.9545.95

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95.9564.9554.9538.9524.9519.9524.9536.9542.9518.9529.9536.9547.9543.9524.9529.9532.9521,95

59.9536.9513.9566.9569.95

26.9595.9595.9582.95

126.95

77.95

15-500P51 D (glass)Lockheed Sirus (glass)Chipmunk (glass)Shrike (glass)

•CASS ENG.-Pulsar Bipe

-CONCEPT MODELS-Barnstormer 49.95Travel Air 49.95Kraft Super Fli 49.95Air Scout 27.95

-COVERITE-Super Coverite 4.89Sllkspun Coverite 4.89Permagloss Coverite 5.99Day Glo Coverite 6.39Camouflage coverite 6.39Antique Coverite 4.99Balsarite 2.09Trim it Knife .83Also stock 15 ft.&25 ft. rolls.

-CRAFT AIR-Drifter 16.95Windrifter 29.95J-Bird 39.95SD100 35.95Salialre 79.95

-DREMEL-260 Moto Tool 26.95270 Moto Tool 29.95280 Moto Tool 33.95370 Moto Tool 36.95380 Moto Tool 46.95571 Moto Shop 46.95572 Moto Shop Deluxe 59.95210 Drill Press 14.95223 Universal Stand 9.95217 Foot Speed Centroll5.95220 H.S.12pe.cutterset 18,95240 H.S.24pc.cutter set 36.95Also carry all accessories

-DU-BRO-Tri-Star Scorpian 185.95Shark 60 265.95Training Gear 25,45Conversion Kit 64.95Update Kit 27.97Collective Pitch 99.95Prop Drive unit 69,95Also stock ail accessories

-FUSITE-Fire PlugFire Plug Charger

17.955.17

Stinger (■/aAstarter)Stinger Charger

22.955.17

■GOLDBERG-Falcon 56 MK II 24.95Sr. Falcon 32.95Shoestring 28.95Skylane 62 32.9SRanger 42 15.95

• HOT STUFF-Blue Line </2 oz. 2.89Clear '/: oz. 1.99

-HOUSE OF BALSA-P40 (40 Size) 36.95

VzA Fete 17.95V]A P5ID Mustang 19.95i/iA ME 109 19.95'/lA P-39 Alrcobra 19.95VjA P-47 21.95VzA Bonanza 19.95'/lA Focke Wolfe 21.95VjA Chipmunk 19.95Shoestring 26.95Miss Data 26.95Platenpoi 36.95Nomad 10.95Nomad II 14.95

-JENSEN-Das Ugly Stick 39.95

-LANIER-AvMfScamp 3?95Comet II 36.95Comet 35 34.95Jester It 44.95Invader 57.95Caprice 47.95Cessna 30.95Transit 28.95Pinto 30.95

JEMCOPT19 42.95

-MACO-Jel Star 39.95Vaga 38.95Simplex Trainer 26.95Tiger Cat 36.95

•MARKS MODELS-Wlndward 20.95WIndfree 25.95Wanderer 12.95Bushwacker 25.95Sunny 19.95

-MASTER KIT-Stinger 11 41.95Hlperblpe 41.95

-MEN-M.E.N. Trainer 19.95M.E.N. Trainer 40 36,95Buzzard Bombshell 34.95

-MIDWEST-Das Li! Stick 21.95TrI Squire 19.95LI'I Tri Squire 15.95LI'i T Gilder 18.95Cessna Cardinal 19.95Mach 1 63.95Sweet Stick 24.95Cardinal Squire 57.95Strikemaster 46.95Pitts Special 64.95Silent Squire 26.95Attacker 24.95Stry ornate 16oz. 4.55

•PEERLESS-Cirrus 3000 Sailplane 59.95LIbelle 2700 Sailplane 59.95Newport Sailing Yacht 51.00Dash 7 pop buggy 69.95Peanut buggy ,09 51.95Spearfish cabin crusler 48.95Sydney sailing yacht 59.95

-PLATT-Spltflre 52.T2e 52.FW190 52.Waco 52.

•PRATHER PROD.-Little Ton! Formula I 65.Little Ton! V« midget 49.Sport Panther 65.Pole Cat 16.

-ROYAL-PittsS2 66.Douglas C-47 92.Staggerwing beaehcraft 75.0-25 75Bleriol 45Focke Wolf 190 66Heln Sr.{tony) 70Little Stinker (pitts) 63P-38 92Spitfire 66

-SIG-Doubler 17.Citabria 35.Liberty Sport 47.PSI (Kwlk built) 40.Cessna 150 (Kwlk built) 48.Smith mini-plane 36,Piper J-3 27.Clipped wing cub 27.Ryan STA 49.Yak 1 8 49,Zlin Akrobat 39.Aerobipe 14.Kadet 23,SkybOlt 43,Kougar 31.Klipper 13.Super Sport 12.

•SOLUTION-Solo MK II 32.Saker 39.

-SONIC-TRONICS-Solid state power panel 19Electric Fuel Pump 8.8 oz. big sitot fuel bulb 1

•SONIC SYSTEMS-100-3gear sys&pump 38.t 01 -Ogear system 31.Retract main's (pair) 12Retract nose gear 12Super Charger II pump 8

-SOUTHERN R/C-Fllght line&mlnl caddy 11.Tiger Tall (deluxe) 84Sweetator (standard] 59Sweetator (deluxe) 84Compensator(standard) 59Compensator<deluxe) 84Bobcat 39Mustang X 37Gator Flea 37Alley Kat 30Southern Kite 49Fiberglass Kits:Atlas (standard) 72Compensator(standard) 72

-ENGINES-

ALSO RADIO'S

16.7711.882.982.40

COX;R/C CARS lnterceplor53.9S

Dune buggyS9,9Scustom van 46.95

S-Tee 15.95Fee Wee .020 7.95Pee wee .020 w/lhrottie 9.50Golden Bee .049 8.SOGolden Bee .049 throttle 9.50Black widow .049 9.50Tee Oee .020 I 3.95Tee Dee .049 13.9STee Dee .051 13.95Tee Dee .09 16.50Medallion IS 17.95Medallion .09 13.95Medallion ,09 throttle 14.95Medallion .049 it.SoMedallion ,049 throttle 12,50OREMEL:D-Vise 16.9512V motorcycle battery 1 2.95Charger for above batt. 6.95K&B 1 00 gallons 6.95K&B 500 gallons 7.79K&B FA! gallons 5.95

Fulaba 4ch. SI7 174.95Fulaba 4ch. SI6 1 84.95Fulaba 6ch. SI7 199.95Fulaba 6ch. 516 229.95Fulaba 7 channel 379.95Co< 2ch. (dry) 69.95Cox 3ch.3servo,nicad 144.95Cox 4ch.4servo,nlcad 1 79.95Cox 6eh.4servo,nicad 224.95Ace lcn.pulse(lonly) 59.95Craft Air field boxes 20.95Craft Air e.S.voltmeter 17.95MILLER:211 S non bleeder, I SgunSS.952134 39un set 59,952129 2gun set{tet,14) 56.952018 tgun set (IB) 52.952017 2 gun set(16& 14) 52.952011 air brush set 48.95201 6 1 gun set{16) 48.95IBgun 11.1116 gun 6.9514 gun 5.25Fox Superfuel gallons 7.95Fox Duke's fuel gallons 7.95Pox MliSle Milt gallons 8.95

-O.S.MAX-10 P SR R/C 2015 R/C 2520 R/C 2625 F SH R/C 4125 R/C 2830 R/C 3435 R/C 3440 R/C 4940 F SR R/C 5960 Blacknead R/C 6860 F SR R/C 8460 F SR w/pump 101

•K a B-6526 61 R/C 52,6535 6 I R/C pump 67.801 1 40 R/C 40.8360 40 R/C pump 67.8060 40 R/C marine44.7861 36 R/C 20.6712 19 R/C 31.63B0 3.5CC il plane 39.8361 3.5 outboard 59.8384 3.5 Inboard 41,1000 6.6CC R/C 64.

-STAFFORD-EAA Aero Sport 44.EAA " "(foam wing) 52.Chipmunk 41.B-24 Liberator 128.Super Buckaneer 29.P-S1 (retract gear) 44.Tom kitty MK15 27,Tom Kitty MK40 37,Super Minnow 39.P39

- FOX-15R/CSR bushing1SR/CSR 2BB19R/C bustling25R/C bushing29R/C bushina36R/C buih.sideex.40R/C SRbushIng40R/C SR BB45R/C SR bushing4SR/C SR BB60 Eagle R/C60 Hawk R/C78 R/C

■SUPER TIGER-G20/23 R/CG21/35 R/CS.T. 35 R/C P.P.

-ENYA-29 IV TV35 B III TV40 TV45 II TV60 B ill BB TVwebra 40 R/C

41,Twin Comanche 94.Alrcoupe 51.Comanche 49.

•STERLING-Mlnl Fledgling 1 sStenson Reliant 45WaeoS.R.E. 51Corsair 20.Puddle Jumper 11.Tri Pacer 23,RImfire 32.Gazariator 44.Lancer 30.Lancer SL62 39.Fledgling 29.Fokker 07 61.PT17 62.Super Cruiser 34,J3 18.PT19 18.

-SURE FLITE-Cessna 182 (ail foam) 24Piper Cub (all foam) 24Spitfire (all foam) 24Eye Soar 12Baby Birdie 11Super Eye Soar 34Foam Floats (large) 9Foam Floats (small) 8.

-TOP FLITE-P51 Mustang 37P40 Warhawk 39P39 Airacobra 39.P47 Thunderbolt 53.Freshman Trainer 29.Kwik-FIMII 41.5ESA 41.Contender 30.

•WING MFG.-Drone 29.95Love Machine 29.95

-VK MODELS-Nieuport 17 46.95Fokker Triplane 46.95Cherokee Babe 27.95Cherokee 46.95Navaio 46.95Corben Super-Ace 31.95Sopwilh Camel 46.95

• R/C GLOW PLUGS-GloBee long l.OSGloBee short 1,05K&B long .99K&B Short .98Glo-Devll long .90Glo-Devil short .90Pox long .81

_ Fox short .81

22.9536.9521.9521.9523.9523.9528.9541.9532.9541.9541.9552.9558.95

32.9539.9534.95

24.9525.9543.9543.9561.9579.95

•BALSA-1/16x3x36 .283/32x3x36 .341/8 x3x36 .423/16x3x36 .471/4 x3x36 .523/B x3x36 .671/2 x3x36 1.041/16x4x36 .443/32x4x36 .541/0 x4x36 .623/1 6x4x36 .721/4 4x36 .78

-ZINGER PROPS-7-4.7-5,7-6,7-7 .947'/2-4,7Vj-5,7'/y-6.7'^7 .848-4,8-5,8-6,8-7 .91eVi-4,aV>-5.Std-6,8<4-7 .919-4.9-5.9-6,9-7 .9110.4,10-5,10-6.10-7 .9811-6W.I1-7W 1.121 1-5,11-6,1 1-7.11-7171.1211-6 1.12liso 9-6w,IO-6w,1 l-6w

POWER PACER $42.95 - Mail&phone orders only.sorry no willealli

P08TA6£ « HAN0UN8 CiB. C.OJ). BS6. PERSONAL CHECKS WILL DELAY ORDER 2-3 WEEKS. HEAVY. LONB DISTANCE & OVERSIZE PARCELS EXTRA. PRICES SUBJECT TO CKAH6E. NO RETURN W/DUT AUTHORIZATION.

CORSAIR

from page 86

The kit incluides a 1/8" thick fibre platean(j haridwood beams for mounting anengine in the conventional beam mountmanner. Other hardware included werehinge material, formed wire L/G andmounting fittings, L/G spreader cable,control horns, decals, molded canopyand engine mounting nuts, bolts andwashers.

Our Corsair was finished with HobbyLobby's Superkote covering material onthe wings and horizontal tail surfaces.The fuselage and vertical fin werefinished with K&B Superpoxy enamel.

The radio equipment installed wasWestport international's Variant system.We used a new 300 MAN Variant batterypack which is only fractionally largerthan a conventional 225 MAN batterypack. The ready to fly weight, with 3servos was 29 ounces.

Our test flying was done from a grassfield, which necessitated handlaunching our Corsair. If you are blessedwith a paved or hard surface runway, theCorsair should take-off just fine.However, hand launching is no problem— all that is required is a casual flip.There is no need for a "half back" sprintfollowed by a mighty heave as theCorsair will practically fly right out of yourhand. The Corsair is stable and

possesses all the desirable traitsnormally associated with trainer typeaircraft. Being a clean design, it Isslightly faster than some other trainertypes; however, its slow speed flightcharacteristics are good to the point thatby throttling the engine back to about 2/3throttle, an ideal beginner flight" speedmay be attained.

The Corsair has an unusually widestance landing gear. A flexible cable issoldered between the gear legs toprevent the landing gear from spreadingand producing "bounce" type landings.However, this lateral cable isguaranteed to "catch" on grass fieldsand put the Corsair up on its nose on

to page 108

104

-s -

J2

\m

Fastest, besthandling cars in R/C todi^!

New Pro-Series Racers from Cox.Ferrari 5.12 BB. BMW 3.5 CSL.

Our new two-channel racers havethe speed- upto 30mph-to match theirnames. And the handling to match theirspeed.

In fact they have more speed andbetter handling than any other R/G carfor the price. Plus proportional speed control all the way, forward and reverse.

And that's just the start. These carshave it a//—all that advanced engineeringcan produce for the driver who wants it all.

including the only fully assembledchassis in their class. Complete with asolid .05 motor and six-cell rechargeablebattery pack. Ready for easy installation of

your own two-channel proportional radio.The Cox/San wa 8021 is ideal for these cars.

And a high-impact body pre-paintedand ready to roll. With durable racingstripes and insignia stickers provided.

And special sponge rubber tires forsuper-traction. Plus extra gear sets toadjust speed for just about any drivingcondition.

Pro-Series Ferrari and BMW from

Cox. Conceived, designed, and engineered for just one thing: the best racingyou ever had.

Cox/Sanwa Radios,Airtronic Kits, Cox Engines.Cox Hobbies, Inc./A Subsidiary of Leisure Dynamics, Inc-

1505 East Warner Avenue, Santa Ana, OA 92702

BALSA SUPER SALESize Pieces per box Box price'/i»x3x36 25 ("« .35

'/j»x3x36 20 Td .42

V.x3x36 20 (a .50

^;,a3x36 J5(d .62

V4x3x36 15 fa .67

^x3x36 10 fa .88V2x3x36 10 (d 1.02'/i«x4x36 20 fd .66

»/3jx4x36 20 (a .68

V#x4x36 15fd .81

'/i»x4x36 15 (a .89

V«x4x36 10 (a 1.07'

Hx4x36 7 (d 1.40

V2x4x36 6 fa 1.85

3'inch Assortment(7)1/16x3x36 (4)1/4x3x36(6) 3/32x3x38 (1) 3/6x3x36(5) 1/8x3x36 (1) 1/2x3x36(4) 3/16x3x36

SM.

$ 8.75$ 8.40$10.00$ 9.30$10.05$ 8.80$10.20$13.20$13.80$12.15$13.35$10.70$ 9.80

PAINT SPRAYDUTFITt-quart

diaphragm spray guncompressor

\ 5-foot

air hose

4'inch Assortment(5) 1/16x4x36 (2)1/4x4x36(4) 3/32x4x36 (U 3/8x4x36(4) 1/8x4x36 (1) 1/2x4x36(2) 3/16x4x36

' hobby gun 8-'oot hobbyattachments gun air hose

by BROWN $4099with compressor HASprays any type of paint. Adjustable spray pattern makes it greatfor complete jobs or touch-ups.

HOBBY GUN $088w/1-oz. jar & hose

SEW Flite Line E Z BUILD KITS

ea.

*199®

TRAINER. Ideal firstplane with 3 controls.48" spaiT. .19-.35 engine.

SPORT. Versatile funplane. 51" span. Balsa& Ply. fuse, foam wing.

R/C KIT SALE

SAILPLANESSuper Malibu $21.00Olympic (I $36.00Aquila $48.00Square Soar $17.95J-Bird $38.99SD-100 $38.99Soar Birdy $12.99Wanderer $12.77Windfree $26.99Windward $21.40Cox Cadet $25.99Silent Squire $24.99Pierce Arrow $24.50Pierce Paragon $42.00Viking $48.99Legionair 100 $57.99Legionair 132 $72.99Legionair 140 $84.99Shuttle 78 $33.99Shuttle 100 $39.99Shuttle 132 $48.99

.049 TO .30 POWERAlpha $11.99GLH II $11.05Hornet $12.97Ace Shrike $19.97Whizard $11,99Mach None $12.97Butterfly II $31.99Pacer $12.97Q-Tee $1 5.97 Baby Birdje $10.99 Ranger 42 $1 5.37T-10 $19.99Klipper $14.85Super Sport $13.95Kadet $24.45M.E.N. Trainer $20.99T-20 $24.99Sun Fli IV $20.99Falcon 56 Mark II $25.99Sure Flite Pete $12.99Basic trainer $27.99Super Pacer $20.99Tweedy Bird $27.99New Era Hi $34.99Cutlass $12.99

78 spanBridi SOAR BIRDY

All balsa construction, polyhedralwing with flat bottom airfoil. Ruggedconstruction, machine cut parts. De-

Our balsapacked in200-lb. testcardboard cartons to mini

mize damage.

signed for brick or servos, or mount an.049 engine on the nose. All you do is

7V8" Wing cord555% squares

viscositygauge

SKOOTER II. Racingdesign, 48" span.Standard wing or new"500" racing wing.

.40 POWERKacs .40 $39.99Dirty Birdy .40 $41.99Sweet Stik $25.99Attacker $25.99T-40 $38.99Kommander $28.00Kougar $31.45M.E.N. Trainer .40 $35.99Moss Fly $29.00Solo $29.00

.60 POWERUgly Stik $41.99Sr. Falcon $38.35Skylane 62 $38.35Panther $74.99T-60 $44.99Kaos $48.99Dirty Birdy, balsa $59.99Super Kaos $48.99Bootlegger $52.99Tiger Tail III $52.99

Power ACCESSORIES

12 vt. Wet Ceil $13.97OuBro Fuel Pump $ 6.95

Dave

M.E.N. J-3 CUB

plus K&B .35 R/Cwith DuBro muffler

Sig KAVALIER plusFox .36 R/Cw/muffler ®49"

Sig KOUGAR

WANDERER plus2 roils $Oi99

MonoKote AI

1977 R.C.M.

Reference Guidd

rt// M.*

mrniini

um

Find the articleyou're lookingfor! And in ahurry. RCMissue listed forjust abouteverythi

Sure Flite CUTLASS

plus Cox -^—00Medallion .09 '25(no throttle)

plus K&B .35 R/Cwith DuBro

99 muffler*52'

WINDFREE

plus 3 rollsMonoKote

SailplaneACCESSORIES

standard Hi-Start $24.50Heavy Duty Hi-Start $28.00standard Rubber only ..$12.99Heavy Duty Rubber only $15.97Craft-Air Parachute $ 4.20Adjustable Tow Hook ... $ 1.85Stabilizer Horn Set $ 1.35Spoiler Kit $ 2.80Sun Shield $ 2.80Stick-On Weight. 6-oz... $ 1.40Tow Hook Release-THR . $ 3.20

Use Master Charge orVisa (BankAmericard)

COVERING ANDCOVERING ACOESSCRIES

>SUPER MONOKOTE

3 rollsOPAQUE: red, white, orange, yellow, dovegrey, clear, aluminum, blue, dark blue,chrome or olive drab.TRANSPARENT: yellow, red, orange or blue.

3 rolls M7"METALLIC: green, purple or blue.

FLAT: aluminum, olive drab or grey.

ECONOKOTE

3 rolls Ml"

SUPER

COVERITE

3rollsM3"PERMAGLOSS

3 rollsMB®'Bafsarite..

Glass Coat

$1.88$1.99

TOP FLITE

HEAT

GUN$13

Red, white, blue,dark blue, orange

or yellow.

HEAT SEAL

IRON

99

M377

HB ENGINESat Savings!

Jn iadtw/muffler

.15 R/c . $27.99

.20 R/C. $31.99

.25 R/C . $35.99

.40 POP. $59.99

.61 POP. $79.99Precision made forpower, performance and reliability. Perry carb; POPon some models.

L & L Electronics

IGNITION SYSTEM

1.S voltjack

2.0 volt

chargejack

$1399Portable!

For 1.5 & 2.0-vott glow plugs. Solid |state, rechargeable with automatic glow driver.

Mitre Sander

$109919 DelDel

Ace All-Star $15.99Sig Aero Bipe $15.35Mark's Sunny $20.97Sig Skybolt $43.75Sig Miniplane $34.95Sig Liberty Sport $45.45Cox Gere Sport $27.99Honker Bipe $21.97

House of Balsa

$2099V2A KITS

P-51 .40 size $36.99

Join theQuiet Revolution

uxe

Bevel or square parts. Quick-buildkit; all parts pre-cut, drilled.

MARKET3930 W. Vickery Blvd.Fort Worth, Texas 76101

Phone 817/731-0444 or 731'P.O. Box 2172

6388

Mio

•KP2A $ 89.99•KP4A $190.00•KP6A $225.00•KP5C $269.00•KP7C $369.00

LRB 3 dry w/2servos . $ 99.99

Nimbus 2 . $ 97.99Nimbus 4 . $186.99

'Champion $225.00'Super Pro $255.00

'1-yr written warranty

Cox 2 channelD/S $ 72.99

Cox 3 channel w/2servos .. $135.00

Cox 3 channel w/3servos .. $169.99

L. R. Taylor & Co.POWER PACER

$4899NiCad tester/charger/cyclerspots trouble.

DREMELmakes building easierModel #245 $26.97

'Model #271 $33.47'Model #281 $36.82'Model #381 $44.75Model #571 $43.99Model #572 $58.9%Model #210Drill Press $1 5.95

D-Vise $17.66'with 34 accessories

3jI

tUe ZINGER PROPS... doz. $ 9.999x6, 7 ...

10x6 and10x6w doz. $10.8811x6, 7, 7w7V2, B doz, $11.88All maple, true pitch. Airfoiledtips. You get smooth power,less vibration. Stock up!

ADHESIVESHot Stuff or Zap $1.992-oz. Hot StuH $6.99Blue Hot Stuff $2.9917-oz. Wilhold $1.888-oz. Wilhold $1.00R/C 56, 4-oz $ .789-oz. 5-Minute $3.509-oz. 30-Minute $3.50

Craft-Air Field

SupportBox $<^899

^uW House

Build accurate wings inhalf the time. Use $0799adapters to convert to V ffuse-jig.

A. J. VaA RETRACTS

^■mlLightweight, durable, $ ieasy to install. 'Can be used on U/C

'17

Super SANDER

3 sizes Aluminum tube1 « 7 Qc handle. E-Zl-foot 4.9b Flex Metalite Cloth

bonded to bottom.Easy to guide.

2-foot $ 9.993-foot $10.99

Some items in limitedquantity and advertisedspecials, subject toavailability, will be honored until Aug. 10. 1978.Prices may change if retailprices change.

FORMULA U12-oz. spray... $2.378-oz. can $2.234-oz. jar $1.19Fuel proof 1-step formula. Poiyurethanefinish for foam orwood.

Co/fit ptukh -toS^OAjiluiR/C or FF

OLD TIMERS

Playboy Senior $35.98Quaker, 7-ft $33.99Quaker, 54-inch $20.99M&P Oalaire Sportster.. $41.99M.E.N. Buzzard

Bombshell $34.99

Electric Flight SystemsFournier RF/4 Scale

Sailplane $29.50P-68 Victor $29.50Bushmaster $31.50Electra-Fli $17.50

Electric MotorsAstro .020 R/C $16.10Astro .05 $31.50Astro .10 $56.00Astro .15 $67.50Astro .25 $75.00Astro .05 Twin $38.50Astro .15 Twin $87.50Astro .25 Twin $122.50Rapid Charger for .020 or .05,

plugs intocigarette lighter $21.00

Field Charger for .10, .15or .25 $28.00(uses 2 motorcycle batteries,

not included)

PROP DRIVE UNIT

®62®®by DuBroSmooth running, beltdriven unit for slow,powerful flight. Newrealism for scale &sport.

Extra Belts $4.20

Hobby MarketR/C LONG GLO PLUGS

6for

$37:

Space Age insulator forsuperior conductivity.Withstands heat and pressure of "hot" engines.

for

Ct\u TH HOBBY MKTWte

over ihecounfetp aHOW TO ORDERa h ■

A. Within 48 continental states1. Add $2.00 to prepaid (M.O.,

check, credit card) orders2. Add $9.00 to C.O.D. orders

Credit Card shipment Call (817) 731-0444 or 731-6388

Name

B. Outside 48 continental stales1. Add $10.00 foraclual postage and

handling: excess will be refunded2. No 0.0.0. orders accepted

Address

OUAN. ITEM PRICE

Enclosed: Check M.O SUB TOTAL

Charea of Texas residents add 5% taxw:.. Add handling to all orders: $2.00 prepaid, $5 C.0.0.(BinkAmericard) 0° ^^8 states)# TOTAL

Good thru SignatureI Hobby Market P.O. Box 2172 Ft. Worth, TX 76101

CHECK THESE FEATURES:

Detects weak cells, dead cells, reversed cells, and even intermittent cells.

Reads actual battery capacity inimiliiamperei hours (MAH).

Charges at a safe 50 MAH rate.

Eliminates memory build-up andprevents future build-up.

Calculates average MAH usage.

Compatible to all popular radios.

Backed by full warranty.

Retail Price $59.95

POWER PACER is designed toprovide theultimate value in a nicadTESTER/CHARGER/CYCLER giving R/C modelers the informationthey need to prevent accidents due to batteryfailure.

POWER PACER lets you fly with confidence,that both Rx and Tx nicads are safe.

POWER PACER is available at your favoritehobby shop or direct from factory.

Dealer and Distributor inquiries invited.

LR TAYLOR

& CO.aoaSIVz Roscoe Blvd.

Canoga Park, CA91306

Ph: (213) 360-1178

CORSAIR

from page 104/86

most landing attempts. This is only aproblem on grass fields, and a minor oneat that, as the landing speed is quiteslow.

In summary, the TrueLlne Corsair is afine trainer type kit, that is equally goodin the air. If you are searching for a .10powered (an engine size that has beenstrangely neglected), trainer or sportaircraft, the Corsair from "across the bigpond" might be just the aircraft you'vebeen looking for. □

Read what these famous competitorshave to say about Service at

Radio South"RADIO SOUTH — the persona! service youand your equipment can depend on. I've recommended them to aii my friends."

—Sal Battaglia"i depend on RADiO SOUTH to keep myPole Cat and Skyhawk airborne becausei feel that Steve is delivering the most superior service in the field of radio maintenanceand repair.

—Bob VIolett

We hope you don'thave any radio problems, but if you dothink of Steve Helmsand RADIO SOUTH

SySTEMS. INC

k Competition. Fueh

Steve with his Bootlegger

RADIO SOUTH, INC.Rt. 3, Box 47 Nims Lane, Pensacola, FL 32504 • Phone: (904) 478-6745

BIG MOTHER

from page 95/94

I joined Big Mother's rudder and aileronstogether with power from only one servo.It worked great and no trouble since.

Cost-wise, you'll be the hit of yourfriendly loan company. Imagine six rollsof film covering and over $125.00 in rawbalsa! However, if you build three ormore of these leviathans, your hobbyshop owner will give you theatre ticketsor invite you to dinner.

So, as an example, let's fly BigMother.

Think ahead like you've never donebefore. With all that weight and surface,it takes time to move It where you want it.Rolling into turns is slow and rolling outof them takes a certain amount of leading. Last minute large corrections onlandings or approaches are a "no-no".Take your time too! Use full scale flyingrules. Example: "Good approach, goodlanding. Bad approach, goodbye!" Witheight or more pounds moving along atgood speed, sudden stops will crunch.Big bird structures are meant for flying,not crashing. If you dig a ten to fifteenfoot massive wingtip into the sod, something is going to give!

I am urging, not discouraging, thoughthe tone of caution is evident. The flyingtakes no more skill, it does take a littlemore thought.

The bonuses are great. Big modelssimply/ook more graceful and scale-likewhile flying. Big means no problem withorientation. But the biggest kick you'llget is the response from the public,whether uninitiated or model fraternity.All watching you masterfully fly yourgiant will assume you are an eagle evenif your skill is more of the barnyard variety.

My own enthusiasm for the big ones issecure. My next project will be a 15 footspan secondary sailplane with a threepiece wing. (Goppingen Wolf.) When 1told this to my friendly model supplier, hegave me an abrazo bear hug andshouted, "Olel"

Another fun thing with Big Mother wasaero-tows.

A Glendale, California hobby shopowner, Dick Chronister, agreed to fly mytow plane as long as he could be myprime supplier of materials.

We tried two tow planes: the Kaos ahdan Aeromaster Bipe. Each worked wellbut the engine smoked more with thebiplane. First Law of towing: climb shallow! On the Kaos, we attached a "Y"shaped yoke of nylon cord to hooks oneach side of the fuselage just above thewing saddle and Center of Gravity. Sixfoot aft of the model, we began a singleline totaling 35 feet in all. This permittedthe elevator and rudder of the Kaos tomove without restriction.

to page 110

108

iHat's FANTASTIC 5-CHANNEL RADIO

RECHARGEABLE

NICADS

THROUGHOUT

$259.95U.S. MADE

DEFINITELY NOT A FOREIGN IMPORT!EXCLUSIVE UNCONDITIONAL 180 DAY WARRANTY

TRANSMITTER Model 810

• Number of Channels: 5.

• Case Material: Hi-Impact ABS plastic.• Type Gimbals: Dunham open-gimbals.• Type Pots: CTS 5K ceramic.• Power Supply: 9.6v nicad.t Type Meter RF and battery condition indicator.• Modes Available: Two stick, Mode 1, Mode 2.and single slick — also special order stickarrangements.• Frequencies Available: 27, 53, 72 MHz• Weight: 19 oz. with antenna & nicads.• Size: 1 -23/32" x 4-27/32" x 6-11 /32" (43.5 x123 x136mm).• Unique Features: RF section provides nominal750 mw output. One of the smallest transmitters on the market.

EQUIPMENT FEATURES

RECEIVER Model 520R (5) (4)• Case Material: Nylon.• Size: 23/32" x 1 -19/32" x 1 -27/32" (18 x 40.5

x 47 mm).• Weight: 1.24 oz, (35.1 gr.) for 5-channel.• Type Decoder: C-MOS 8-bit shift register.• Type Front End: Double tuned, dual FETS.FCT RF AMP. Feeding a FET Mixer.

SERVOS Model CE-4

• Case Material: Nylon.• Size: 3/4" X Vh" X IVz" (19 x 38 x 38 mm).• Weight: 1.25 oz. (35.4 grams).• Output: Rotary type.• Output Controls: Arms.

• Type Amplifier I.C. amplifier, utilizing T.I.28604 I.e. chip.• Motor Size: 8 ohm, 16 mm.• Servos: CE-4 (Dunham Mechanics)

SYSTEM

• Airborne Power: 500 mah (Nicads).• Type Connector: Deans 3-pin.• Type Charger: Dual nicad charger, 2 charge

indicators.• Servo Trays: Fuli set.• Shipping Container: Plastic outer, foam

plastic inner.t Service Available: Warranty service thruMac's P.O.B. 909, BELLFLOWER CA. 90706.Other sen/ice available from Service Centers

throughout U.S.A. and Canada.

AVAILABLE ONLY FROM THESE OUTSTANDING DEALERS

EARLE'S HOBBY AND CRAFTS16631 BELLFLOWER BLVD.

BELLFLOWER, OA. 90706(213) 925-8314

LEE'S HOBBY201 W. 6th AVE.

CORONA, CA. 91720(714) 734-5515

ORANGE COAST HOBBIES14536 BROOKHURST

WESTMINSTER, CA. 92683(714) 839-8844

FRANK'S HOBBY SHOP666 NO. TUSTIN AVE.

ORANGE, CA. 92667(714) 532-3462

DEALER INQUIRIES INVITED. SHIPPING PREPAID ON RETAIL ORDERS. SEND CHECK OR MONEY ORDER TOONE OF THE ABOVE LISTED DEALERS. ALLOW TIME FOR PERSONAL CHECKS TO CLEAR.

CALIFORNIA RESIDENTS ADD SALES TAX

• , i.

1"'

Flying insurance men?We are in a way Insurance men ... for we have

a policy that covers you, it's simple; we offer onlyquality equipment and materials for you to build andfly with. NO-FAULT flying is still up to you toaccomplish, but having the very best equipmentcertainly gives you maximum coverage.

We've supplied the champs for many yearsand you can have the same service and counsellingthey receive. And if need be, quick 'claim' service.We stand behind everything we sell.

Call Bob or Tom or Gregg today. Join the 'champcamp' and you'll have the next best thing to 'FlyingInsurance'... and no salesman will follow you around.

BOB REUTHER'S

HOBBFUWRID

6602 HIGHWAY 100 • NASHVILLE, TENN. 37205 U.S.A.

9:30 AM to 5:30 PM Monday thru Saturday (615)356-1225

BIG MOTHER

from page 106/94

With our knees rattling, we went forbroke. Dick opened the throttle on the 60powered Kaos and it began to struggleforward. Big Mother took to the air in lessthan ten feet. I eased her down to permitthe Kaos to take-off. It did and we were

away. The first thing we discovered wasthat the tow plane pilot must give loudverbal information as to which way heintended to turn. Once, he turned sharpleft while I was fat, dumb and you-know-what!

Ooooops!.. .Cut loose with the servo controlled

hook — both models doing funny things— land — talk about it — try it again.Wheel This time we all worked togetherand Big Mother climbed high into theblue.

There's nothing spooky about aero-towing once the novelty is gone. AnyRC'er with ordinary skill can fly the towplane or the glider. Just slow everythingdown so turns are long and lazy and theflying is smooth.

For hi-starts, I had to use two lengthsof heavy duty surgical tubing and still BigMother was sluggish on the climb. Butclimbing in a thermal, she out-classed allthe other sleek sailplanes. And, you cango as high as you will — she can still beseen.

Perhaps you feel I'm unduly turned onabout these giant sized creatures? Sure,I agree. But in this day when everythingwe have is shrinking due to costs, it's apsychological happiness to unfurl a birdwith 2500 square inches of wing areaand watch the eyes bug out. Let 'emshrink my loaf of bread — even my steak— but leave me my supermonstermodel!

"BIG" spells pleasure. So be a man(or woman) of distinction. Join the eiitebefore its too iate. For soon, very soon,all the fraternity will be gung-ho aboutthe super models.Amen. □

RC IN ATMOSPHERIC RESEARCH

from page 85

To measure both wet and dry bulbtemperatures, thermolinear thermistorsbuilt by Yellow Springs InstrumentCompany are used. To measure altitude, a pressure transducer producedby National Semiconductors (LXISOOA)is used. The air speed is measuredusing a heated thermistor probe developed (I believe) by J.R. Rowland ofApplied Physics Laboratory at JohnHopkins University. The signals from

to page 114

110

★★★★★★★★★ ★★★★★★★★★★★★★★★★★★★★★★★★★★

flS* • •

theiyorld

77 MODEL

LFX IIIFiberglass fuselage and 1/64 plycovered wing.

A Johnny Casbum Kit

Special

$89.95Reg. $139.95

• Excellent plans• This high performance pat

tern bird does every trickIn both the AMA and FAI

book.

• Completely prefabed• Fiberglass fuselage• 6272" wing covered with1/64" plywood (completehardware in the SuperDelux only)

CASBURN KITSLucky Fly Supreme (139.95) . 89.95Super Lucky Fly II (89.95) .. 69.95Little Lucky Fly II (.40 size)(79.95) 59.95

Super Tex .60 (89.95) 59.95Super Tex .40 (79.95) 59.95Little Tex (33.95) 19.95Funetl Trainer (69.95) 49.95LFX III Super Delux (1.39.95) 89.95

GLIDERS

AND ACCESSORIESCraft Air Drifter 519.95

Craft Air WIndrifter 34.95

Craft Air-Sallaire 89.95

Legionair 140 84.95Legionairl32 71.95Legionair 100 57.95Shuttle 78 33.95

Shuttle 100 39.95

Shuttle 132 49.95

Windfree $26.95

Wind Free $26.95Aqullla 47.95

Square Soar 14.95

Heavy Duty High Start 29.95All Others - Call for Price

ACE KITS

Ace Up Start (17.95) 13.95All Star Bipe (24.95) 19.95Pacer (19.95) 12.95Wizard (18.95) 11.95

P.O.BOX80395821 E.ROSEDALE FORTWORTH,TEXAS76112 JJ.PHONE: DAY 817/451-1570 NIGHT: 817/572-1452 CLOSED THURSDAY GONE FLYINGI

SUPER TEX .60AND

SUPER TEX .40

SUPER/LUCKY FLY

SUPREMENew! .60 size fiberglass fuselage and

1/64 ply covered wing.

NEW! NEW! NEW!

A Johnny Casburn Kit

Special.40 Size .60 Size

$59.95 $69.95

Reg. $79.95 Reg. $89.95

• Easy to build fuselage• Hinges and many other ac

cessories

• Ready-made ailerons and

formed gear• Read-i-built 65", 812 sq.

in. wing ready to paint ormonokote.

• Easy to build for beginnersTHE BEST TRAINER EVER

FLIGHT GLASS

Saturn Basic 59.95

Saturn Delux 79.95

P51 Special 59.95P-51 Deluxe $89.95

ACCESSORIESPORTA-SHADE $17.987 ft. tail; 60 sq. ft. room for

modelers & airplane stuff!

J.C. Power Panel (39.95) .. $28.9512 volt Motor cycle Battery . $13.95Kraft Air ESV $15.95

Sonic Power Panel (27.95) .$19.95Sonic Electric Fuel Pump... $ 9.95

Box - Wood-Bulll $21.95

Kit-unassembled $14.95

Robart Super Stand $ 3.95

Hobby Sprayer $39.95Electric Sander $23.95

RADIOSCannon Radios

Tini Twin-3 chan, 2 servos $149.95

Tini Twin-3 Chan, 3 servos $174.95

Kraft 7C . -CALL FOR BEST S 4>Kraft 5C .. PRICE ON $ fKraft-KP4 . KRAFT RADIOS SE.K. Nimbus-4 chan". 4

servos $186.96

E.K. Nimbus-2 chan $ 97.00

Call us tor Super Price on RadiosRoyal-Kraft-Cannon-E.K.

Special

$89.95Reg. $139.95

GOLD MEDAL

FORMULA FUELGOLD MEDAL FORMULA FUEL

10% NITRO CONTENT. $5.98

er gal. in cases 14 per case).$6.98 single gallon. 15% $6.98per gallon in cases. ShippedFreight Collect. We use UPSwhen possible.

ASK ABOUT

CUUB DISCOUNTS'$5.98linger PropsBest Power/Best Quality

All 9" PropsList $1.30 $ .89

10" x6"

List $1.40 $ .9911"x7"/11"x7V2"

ListS1.60 S1.19

ENGINESk & B 61-with pump andmuffler $79.95

OS 40 SR with muffler $59.95

VECO 61

with muffler $ 85.00 $59.95KB 40 $62.50 $39.95

O.S. ,15RC $29.95

OS 25 SR • $ 52,95 $43.95

OS 25 Reg. RC S 36.95 $29.95

Kraft 60 $ 99.95 $79.95

Webra Speed $157.95 $99.50McCoy 35 RC $24.95OS 50 SR

with muffler $119.95 $82.95

NEW QUADRA ENG1NE-2 cycle, 2

cubic inches, 2 HP, comes compieta

with Prop. Adp., engine mount,

muff. Pump type carb $121.50QUADRA: Piops (18' x6", 17"x6") $6.95 ea.Tank kit with clunk {one ql.) $3.75 aa. ExtraBCJ-6 plugs $1.95 aa. Netxirene Qiel line (1/8")$.65 ft. Throttle linkage adapter kit complete$6.95 ea.

"Johnny Casburn'Power PanelReg. $39.95

Introductory Price $28.95

-J-A. •• '

Pylon Brand StarterStd. $23.95 Delux $26.95

Taylor & Co,

Power Pacer

Super Sale $48.95

Special Priceson MB ENGINES

The finest German

Precision Craftsmanshipwith PDP

(Perry Directional Porting)

.12 29.95

.15 34.95

.20 39.95

.25 39.95

.40 PDP 59.95

.61 PDP 79.95(Aff onglnos hare ball baarlngs. AddS7.9B lor .40 and .60 mufllars.i

SHIPPING INSTRUCTIONS

Spectil» baSQ<3 list prices,subject >0 chsrtgs wiihoui notice.

C.O O MONEY ORDERCHECK

Tsiss resiOflnta M0 S% Sales tax.

Shipping Charge $2.00

Add $3.00 for oversize and tieavy boxes.

(FUEL SHIPFEO UPS • COLLECT}

CHARGE \T'

IF WE DON'T GOT IT WE'LL GET IT FOR YA'

A BUD NOSEN MODELSINCORPORATED

BOX 105, TWO HARBORS, MINNESOTA 55616All kits feature all wood construction, fast assembly, huge rolled plans, assembly instructions, machine and die cut parts, all necessary hardware and much,much more. Designed for .60 engines on up. Write for our illustrated catalog—50(|:.

Standoff Scale

Formed ABS

cowl Kit -

$119.95

3 or 4 Channels

Flys like atrainer Kit -

$99.95

9' AERONCA "CHAMP' 102" BUD NOSEN TRAINER

:--a.

1/4 size Standoff

scale 3 or 4

Channels Kit -

$99.953 or 4 Channels

No foam or

plastic Kit -

$79.95

8' CURTISS JN-4D JENNY

I,

Standoff scale

4 Channels

required Kit-

$129.951/3 size Standoff

scale 4 Channels

required Kit -

$129,951

8' 1933 GERE SPORT

40

AUSTRALIAEK Logictrol Australia44 Macquarle Road

Eariwood 2206

Sydney, Australia

1/4 size Standoff

scale 3 or 4

Channels Kit -

$139.951/4 size Standoff

scale fvlolded

cowls Kit -

$169.95SWITZERLAND

Blue Max

Modeilflug-Technik AGAlte Landstrasse 122

CH-8800 Thalwll Switzerland

OVERSEAS

DISTRIBUTORS

— SOUTH AFRICA

Radio Control World202/4 Oceana House

Lower Burg St.Capetown 8001 So. Africa

CANADA

John Klassen Hobby Central400 Cuyler Street

Thunder Bay, Ontario

spectacular102 P-51 D

KIT $169"

Stand-off Scale

2.75" equals r

102" Span

16.5# flying wt.

1800 sq. In. w

ing

2674" chord at root

A channel radios required

Designed for .

60 engines

with prop driver

Very stable flyer

Proof of scale 3 views

Kit includes 21" canopy

No foam or plastic

6" spinner is not includedavailable direct only $16.95

Huge rolled Plans

Machine and die-cut parts

Decals not included

BUD NOSEN MODELS, INC.

Box 105

Two Harbors, M

N 55616

catalog 50C

SiGUMA ACE BY SANK^OCOMPLETE KIT LESS RADIO k ENGINE

ASK YOUR DEALER OR YOU MAY ORDER DIRECT

LEISURE ELECTRONICS

ai4) 552-4540

11 DEERSPRING

IRVINE, CALIFORNIA 92714

RC IN ATMOSPHERIC RESEARCH

from page 110/85

these transducers are brought to amultiplexer and analog-to-digital converter and serially transmitted via an FM linkto a mobile ground station. On theground the signals are recorded anddisplayed.To aid in daytime flying and to also

extend operations into the night, the aircraft has been equipped with a remotelytrimmed "Hill" electrostatic autopilot.This unit was developed by fvlaynard Hilland uses the earth's electrostatic field tocontrol the airplane's attitude. With anunstable aircraft like ours, the autopilotis necessary for flights above 2000 feet.By making the unit remotely trimmable,changes In power setting and atmospheric conditions can be compensatedfor.

Some of the system's characteristicsinclude:

Control, Heathkit 8 channel radio; Aircraft, Jensen's Ugly Stick; Engine, ST.60 Bluehead; Weight, 8y2lbs wet; Rateof Climb, >1000 ft./min.; Max Cruise, 70mph; Reliable Celling, 3000 ft.; Max.Surface Winds, 20 mph.; Number ofData Channels, seven; Channel Accuracy, 0.1%; Flight Duration, 15 min.;

Flight Restrictions, FAA approvalnecessary above 500 feet.Most of the problems encountered In

our research have to do with the fact that

it is a field oriented program. Consequently, no improved runways areavailable so the aircraft was convertedto conventional landing gear, the nosewheel is removed and the plane is handlaunched. Also, in a field project, allspare parts and repair materials must becarried along (in Wyoming the nearestRC hobby shop may be several hundredmiles away). Future plans for our aircraftproject include adding heading, rangeand azimuth information for completeIFR capability. The system will then becoupled to one of our Hewlett Packardcomputers for real-time display of theatmospheric data In engineering units.Also, with computer survelance the flightpath profile can be controlled. □

RADIO SPECTRUM

from page 84/82

Radio Control Equipment RatingMany of the letters I receive, ask for

opinions on various brands of RCequipment. I don't normally replybecause I don't have a good way of

really determining what is good andwhat is bad about the various kinds ofsystems being used. Usually I just hearabout the complaints. I thought what Iwould do to remedy the situation is toconduct a poll and, hopefully, get a goodstatistical sample of how individuals ratetheir own equipment, good or bad. It willstill be difficult to get an absolute ratingbecause everyone's standards aredifferent, but I think we might get someuseful information. Tell us the following:1) How long you've been in RC.2) Whatyourmain interests are —sport

flying, pattern, pylon, etc.3) How you rate each one of your

systems (by brand) with regards tothe following categories. Use a zeroto ten scale, with ten being perfect.a) Performance — when your set is

working, how good is it? Are theservos smooth? Very littledeadband? Centering perfect withno drift? Are the transmitter stickssmooth with no slop? Does thereceiver glitch once in awhile?Think about how good it workswhen you are satisfied it doesn'tneed repair.

b) Reliability — How often doessomething go bad that keeps youfrom flying? Servo motors quit?Connectors fail? Wires break?Think about failures that requirecorrective action.

to page 116

114

VIKINGA COMPETITION SAILPLANE

designed by

Tom Williams

A NEW CONCEPT

ONE SAILPLANE DESIGNEDTO BE THE BEST AT ALL TASKSUNDER ANY CONDITIONS

Wlngspan meters (118 in.)Wing area 120 in.'Flying Weight Mark I, 52 oz.

Mark ii, 54' oz.

Wing Loading Mark I 6'^ oz./ft.'Mark ii 6'/^ oz./ft'

w/Ballasl 17 oz./ft'

MarklAlrfoll 11'.^% Flat Bottom(Craft-Air Windrifter)

Mark Ii Airfoil... New 12% Semi-symmetrical

VIKINGMARK I MARK II

$79=5

SP-7

THE VIKING iS MORE THAN JUST ONE GOOD SAILPLANE — IT IS TWOTHE VIKING MARK I USES AN 11V2% THICK FLAT BOTTOM AIRFOIL TOEXCEL IN THERMAL PERFORMANCE. THE VIKING MARK II USES ANEWLY DEVELOPED 12% SEMI-SYMMETRICAL WING TO EXCELIN WINDY CONDITIONS AND IN SPEED EVENTS.THE KIT CONTAINS ONE WING (YOURCHOICE) AND A SPECIALDISCOUNT COUPON

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PK-2Introductory price

$49'=

STRAIGHT TALK FOR THE BEGINNER

Up until the time of the introduction of the BUTTERFLY II, the most popular kit trainers on themarket have required flying skilis far beyondthose expected of one just entering the sport, infact, the vast majority of these "trainers" werenever successfuiiy fiown. Typically, their take-,off and landing speeds are 35 to 40 mph. Of

course some of the "trainers" were never completed, yet many, which were beautifully buiit,were reduced to rubble on their first day out.

The BUTTERFLY II is not only rugged and crashresistant, but It takes off and lands at only 18mph; time to observe, time to think, time to

correct. This slow flight also gives it a true-to-scale flight appearance. I.e., more like an eaglein flight than a housefly.

The entire R/C model industry wants you to succeed, and Craft-Air, Inc. is proud to be able togive you the best chance of success.

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RADIO SPECTRUM

from page 114/82

c) Maintainability — How much workdoes it take to keep your systemflying? How often must you cleanfeedback pots? Do you send thesystem in for repair or retuningquite often? How fast is theservice and how long does thismaintenance keep you fromflying? Think about the time fixingversus the time flying.

d) Cost to own — add up the originalcost, the cost to service the

equipment, and subtract what youthink you might be able to sell itfor. How does this compare withother systems?

We may not be able to tell you what

system to go out and buy, but we shouldbe able to tell you how owners feel abouttheir own equipment. It should be veryinteresting when one guy has more thanone brand of equipment. Now is yourchance to tell the manufacturers whatyou think of their products.

•

Antennas

I received a letter a few months agothat I've been meaning to answer. Nowwhen I've finally gotten around to it, ican't find it. However, the questionasked went something like this:Can we send more power in one

direction by putting a reflector on ourtransmitter antennas?

The answer, which may surprisesome of you, is yes. The best example isthe familiar radar dish we've all seen. It isactually a reflector just like we have in anoptical system. We know that a flashlightbeam is much brighter than the light wewould get if we removed the reflector

and let the bulb radiate in all directions.Radio frequency waves can be beamedin the same way. The reflectors don'talways look like optical reflectors,however, a good example is thestandard VHP TV antennas oneveryone's house. Some of those rodsare the actual receiving antenna, whileother rods are reflectors and directors.This makes the antenna directional andis why many people have rotors to pointthe receiving antenna at the TVtransmitting antenna.You can probably guess why we don't

use directional antenna's in most RCsystems. It would put another load onthe pilot to remember to keep pointing atthe airplane. However, if you had somespecial application such as an altituderecord or some long distance mission inone direction, it is a way of increasingrange just as if you increased transmitterpower. If you had a way of pointing thereceiving antenna at your transmitter

EWH is Your Miniature Aircraft Headquarters

Price subject to change without notice.

The Quadra Is a two cubic

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models. Quadra burns fuel

clean and the model staysclean (no need to fuel proofthe model). Quadra comescomplete with the accessories shown in the photo.

$121.50

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EWH Prop Adaptor $14.95

EWH Introduces the new Su

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Tank Kit with clunk (one qt.) $3.75 ea.Extra RCJ-5 Spark Plug $1.95 ea.Neoprene fuel line (1/8") ..$ .65 ft.Throttle linkage adapter kitcomplete $6.95

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116

45

ENGINE

to 60" Size

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• Landing gear blocks• Designed for retractable

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For a FREE CATALOGUE Send a Self-Addressed Stamped Envelope to:R & S HOBBY PRODUCTS. INC.

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you could gain on that end too. However,present day systems work withoutdirective antennas, and we're reallybetter off with one less thing to worryabout. □

DELTA SKYHAWK

from page 79

. . . or masking tape,Spot glue the fuselage halves togetherat the top of the windshield only. Now,using the wing as an alignment guide,drill the holes for the wing alignmentdowels in the top of the fuselage. Installthe wing in the saddle and use rubberbands around the hold-down dowels tosecure in place. Turn the joined fuselageand wing upside down and lay acrossthe narrow dimension of the box top ofthe shipping carton. Now, install thehorizontal stab and get good alignmentwith the wing by shifting the fuselage

halves up and down relative to eachother until alignment is assured. You canassure alignment by raising the stab offthe carton slightly and assuring that theposition of the two flying surfaces remainin alignment. Now glue the bottom of thefuselage together and then glue thehorizontal stab to the fuselage. Whencomplete, turn the unit over and do thetop in the same manner. When installingthe vertical stabilizer, use some epoxyon the bottom of it, where it sits on thehorizontal stab, so as to assure rigidityand alignment.

Here are some other commentsworthy of note;

(1) Don't use the wheel pants. They'lljust break or get in the way.

(2) Use great care in cutting the cowlto fit the engine/muffler combination.Some of the lip of the upper and lowerfuselage joint must be cut away to allowthe cowl to fit.

(3) The use of brass 1/16" pushrods is

not recommended for the controlsurfaces. Use 1/4" square hard balsaand fit with pushrod ends. They will bemore rigid and will not add weight.

(4) If you are a new flyer, don't use theflight instructions in the manual — get aninstructor. It's not that simple.

Assembly using the hints providedabove is quick, but don't look for afinished product in a weekend.

Flying the Skyhawk was a realpleasure. It flew right off the boards withno trim changes required beyond thezero trim initial setting. We did find thatthe flight characteristics were quitecomfortable for training at the front of theC.G. range listed and toward the rear;the machine was quite agile.

With reference to the size enginerequired to fly the Skyhawk, we felt that itwould be good to check the kit with theminimum engine size recommended bythe manufacturer. Our choice of Duke

to page 120

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A compact, high quality bench model disc sender for generalhobby use. Double ended motor shaft, grinding wheel or buffercan be attached without disturbing sender.Fully adjustable, positive lock, tilt table. Large (over 12square inches) sanding area.

Heavy duty sanderMKII Dual shaft model (can be used with or without grinding wheel)

DELUXE ACCESSORY PACK:*•includes:

backing disc $4.95miter guide $ -95sanding discs (Econo Pack) $3.95Price total if purchased seperately $9.85 .

ARBOR FOR MOUNTING GRINDING WHEEL(can also be used on HEAVY DUTY model by removing backing disc)

GRINDING WHEEL 4 inch (use with Arbor above)

$34.95$39.95

^ Shown with grinding wheel atteched.^ Mounting arbor and grinding wheel not included.

ENTERPRISES

117

EMPIRE MODELS

r

AIRTRONICSQ-Tee 19.75Square Soar 22.75Gere Sport 36.75Ouestor 31.75Grand Esprit 92.75

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RCM Trainer 40 38.61

RCM Trainer 60 44.23RCM 15-500 28.08RCM Sportster 28.08Super Kaos 40 39.31SuperKaos60 49.14

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(a) C.O.D. within 48 continental slates only.Please add S3.00

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52nd National Model Airplane ChampionshipJuly 31st to August 6th Lake Charles, Louisiana

RC Soaring eveni.s along with RC Helicopter flying (an official event this year) will be in Sulphur (icn miles West ofLake Charles) at the improved flying field owned bytheL.-A.R.K.S. Indoor flying will beat the new Burton Colisium.a300 foot circular building with a 100 foot domed ceiling. Additional attraction — Seaplane contests (unofficial)

Im liiniw inlornmim. omioci: Larry Bollch, Special Events Director, Washington, D.C. (202) .347-2751.

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LANDING GEARBRACES

DELTA SKYHAWK

from page 117/79

Fox's new .15 cu. in. Schnuerle was thecorrect one. The engine pulled the craftsmartly through the air and allowed us todo a large range of acrobaticmaneuvers. If a Schnuerle engine Is notused, a .20 cu. in. engine would be thebetter choice to provide sufficient extrapower for the beginner. □

ALPHA

from page 78

— coveredwith white Econokote on the wings andstab and red Flite Kote on the fuselageand rudder, trimmed with DJ's tape. Itwas powered by a TD .049, fueled with25% Go-Pop to swing a 6/3 Cox greyprop and directed by an Ace DigitalCommander 1-8 with bantam servosand a 500ma battery pack. With thiscombination, the similarity to a Cessna150 was quite pronounced. Like thesong of the same name, "Slow and EasyWas The Game". Although it would loop,roll and spin. It was definitely not apattern airplane. It is forgiving and givesyou time to think. If we can find a way tothrottle a muffled TD .09 without asevere weight penalty, we plan to addthe third channel and believe that thislittle bird will be a real ball.

Total construction time, ready forcovering and radio installation, wasabout 6 hours, including a couple ofphone calls. Although we haven't had anundesired opportunity to test its strengthwhen smitten by Mother Earth, the brickouthouse aspects of this model shouldmake it quite durable. With the wing andhatch off, full access to everything isgained. The engine is out in the open sothere are no problems in getting to it.

This is the sixth Ace kit we have builtand, although the first one that wasdesigned as a trainer, we feel that it istheir best all around effort to date.

We commend Ace for their efforts andrecommend this kit to anyone notcompletely dedicated to gas guzzlers,either as a first airplane or, with thelarger engine, a pleasant change ofpace. □

SERVO BUFFER AMP

from page 76/74

add enough time constant to the circuitto make the Buffer Amp act as a lowpass filter. Any noise burst ofapproximately 100 microseconds or lessis completely eliminated due to theresponse cut off. This cut off or responseplays an important function of thisdevice. The other thing that takes place

to page 122

120

1/12 SCALE PORSCHE 935 TURBO

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SERVO BUFFER AMP

from page 120/74

is that the pulse has a delay time throughthe Buffer Amp also. This delay timere-positions the pulse which, in turn,eliminates noise bursts that are

entrapped in the saturation part of thepositive mode pulse. The device is veryeffective when noise bursts ride on the

trailing edge of the pulse. Figure 5

shows this. R2 is in the circuit to restrict

current flow in Q1 and 02. Without R2

there would be an instant short duringthe positive pulse through 02 emitter to01 collector. Output load is restrictedthrough R5. If an older servo that usesdiscrete components like the KPS9,10,or 11, is going to be used with the BufferAmp, R5 should be of some lower valueresistor of say 1000 Ohms than that of2,2K Ohms as shown. In a real stubborn

case of heavy loading, R5 can bejumpered out. Indication for the need todo this is when the servo locks over into

the end or fails to move at all. If you aregoing to use a 4 wire servo with one ofthe new 3 wire decoder receivers, acenter tap wire will be necessary tomake the 4 wire servo operate. TheBuffer Amp doesn't need the use of acenter tap to operate.

to page 124

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SERVO BUFFER AMP

from page 122/74

Construction is not critical. Use Figure2 for parts location and use the parts listto identify the parts used. Figure 3shows parts location from the foil side.Figure 4 is the PC board layout in thepositive form for those of you who wantto make your own. A1/32" drill is used todrill the holes for the components in thePC board. Parts should be placed asclose as possible to the PC board. Theusual caution goes with being carefulwhile soldering the components. Try notto overheat them.

A good component supplier for thisproject is Ace R/C. Their address is Box511, Higginsville, Missouri 64037. Theresistors, capacitors and a substitutetransistor can be ordered from Ace.Refer to part #27K20A for the resistorsat 25g each. For the capacitors, use part#18K7 at25Geach and state what valueneeded. For the transistors, any generalpurpose type can be used, such as HEPS0019 and HEP S0015. From Ace R/C,the 2N4400 can replace the 2N3904 andthe 2N5355 will replace the 2N3906.Price of these transistors will run about500 each.

The step-by-step photos shouldresolve any question on the placementof parts. They are truly straightforward.A piece of heat shrink tubing makes anice way to protect the PC board aftercompletion of the Buffer Amp. TheMonoKote heat gun does the shrink job.

In closing, I have a concludingcomment. In field testing this device, itbecame a little difficult sometimeslooking for a guinea pig. It took some realtalking to persuade a fellow RC'er thatthe glitch problem he had could behelped with my Buffer Amp. You justdon't dream up something like this, andjust because it worked on yourequipment expect it to work oneverybody elses. It took many tries tomake sure I was taking out the glitchesand not causing a lot more.

If by chance, after building your unit,you have some trouble in acquiring thedesired results, feel free to contact mewith your problem. I will do my best togive an answer. Maybe not the solutionto your problem, but a helpful answer.

Any of you who are not up to makingyour own PC boards, I have a few atS2.50 each. I also have a kit of parts witheverything but the servo plugs at $6.00 ifyou are really lazy. The kit also Includesthe PC board. Please enclose aself-addressed stamped envelope withyour request. My address is as follows:George Steiner, 2238 Rogue RiverDrive, Sacramento, California 95826.

Remember, "Old RC systems don'tdie — they just fly away." □

124

REVIEW!

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K&B 3.5CC (.21) R/C EngineA real work horsefor its size. Successful as both airplaneand car engine.

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AROUND THE WORLD

Top Left: The Hobby Huset (Uppsala, Sweden) sent us this pictureof a beautiful Sig Skybolt built by one of their local fliers. It featuresthe Hale Wallace paint scheme and scale flying wires.

Top Right: Leroy Rogers (Tulsa, OK) took the Sig Kougar kit and redesigned it to this T-tail configuration. He reports that it flies real well.

Left; Arthur Allen (Midvale, UT) built this stock Kougar and he reports;"I am only in my 2nd year at flying R/C and I am far from an expert,'but I am able to fly the Kougar without any difficulty. One of the expert members of our club flew my Kougar and stated it was the smoothest and most responsive plane he had ever flown. Six of our club members are now building Kougars after seeing how well mine flies."

Lower Left: Anthony Maynard (B'dos, West Indies) has over 200 flightson his Kougar since completing it in 1976. He told us that he is so pleasedwith its flight performance that he has decided to build another one.At the same time, his daughter is learning to fly on a Sig Kadet.

Bottom Left: Monroe Larson (Bumsville, MN) wanted to fly RC and,as he relates in his letter, "I chose a Sig Kadet powered by an OS40for my first plane. The combination was fantastic! The plane is a knockout and it gets lots of comments for its appeal on the ground and its goodmanners in the air." Monroe told us his reasons for buying a Kadet -"(1) Excellent reputation as a trainer. (2) The best instructions and plansof all kits I looked at. And (3) Great appearance - a handsome planeand I like that."

Bottom Right: When a model designer designs a kit, that's not news.But when a model designer builds a kit - now that is news! Noted kitdesigner Dan Santich (Pinnacle, NC) sent us a picture of a Kougar herecently built. Dan said in his letter; "It was a very nice kit and reallywent together easily. As you can see, I modified the wing and installedCG retracts. It just flies super! Thanks for a fine kit."

FLY ONE OF THESE FLIGHT-PROVEN KITS:

RC-31 KADET - .19 - .35 Engines $34.95RC-34 SKYBOLT - .60 Engines 862.50RC-35 KOUGAR - .40 - .50 Engines 844.95

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Nylon Control HornsMolded Plastic Control HingesIllustrated Instruction Book

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Die-Cut Plywood Formersand Doublers

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SOLO and SAKER; Solution Aeromodel's one-two punch for the beginning and novice R/C flyer.

$46.95 SOLO MK IIBasic trainer and sport model, builds fast,files great, has wide 19" track main gear lorsuperb ground handling. Speclllcallons;Span 51 length <11", wing area 523 sq.in., weight 3Vii to lbs., engine .20 to.40. airfoil symmetrical, radio required -four channel.

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SAKER $56.95Advanced aerobatic trainer and sportmodel. Excellent choice for the noviceflyer's first low-wing model. The Saker Iseasy to fly and very stable at ail speeds.Specincations; Span 51". length 43 . wingarea523 sq. In., weight 4 to5 lbs., engine.29 to .40, airfoil symmetrical., radiorequired • four channel.

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COOL POWER FUELS ARE COOL CLEAN BURNING FUELS THAT LET YOUR ENGINE PERFORM ITS BEST AND UST LONGER. THEY CONTAIN ALL THE TIME HONORED INGREDIENTS PLUS A FEW DIFFERENT FEATURES THAT GIVE THEM A DIFFERENT EDGE ...

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1/4 SCALE

FORMULA I RACERS

from page 70

available through your local hobbydealer or direct from BrIdI HobbyEnterprises, 1611 East Sandlson St.,Wilmington, California 90744.The kit can be assembled over a

weekend as It is fairly simple and doesn'thave a whole lot of parts. In fact it willtake longer to put a good finish on it thanIt will take to build it. Regardless of howyou use Little Toni (racing, scale,aerobatic, or sport) It is a model that youcan enjoy with pride. □

POWER BOATING

from page 69/68

props I have are all for 3.5cc engines —or 19-21 c.i., if you prefer it that way —but there is a whole range for any size ofengine. The props are nicely made, and,being metallic, can be tuned for racingby the real experts, or left as they are forthe not so expert, and still are veryefficient.

A lot of modelers are a little confusedby this business of what prop to use onwhat boat, and the field is so large that itis difficult to give advice without goinginto a very long article on this one aspectalone. However, here are some ideas, orrather thoughts on the subject.

In the first place, when you buy a boatand engine, ask at the shop what propyou should use. Generally you will get afarily good Idea from this. If you don't andI've said it before, It's time you changedshops! Okay, now supposing the guysays that for your mono-hulled boat, witha K & B .21 engine, you need a Gale 0-7or a Dumas 1240 prop. Right, you takethe recommended prop, and you buildyour boat, and you try It out with thatprop. One of three things will happen;either it is too small, the right size, or toobig. How can you tell? This Is the difficultpart. The best bet is to lay your hands onthe local expert — if you are a member ofa club this Is not difficult — and get him totake a look, or rather, to listen and lock.In the first place, he will have a lot ofexperience, and may well know just theright prop for your combination.Alternately he will listen to the boatrunning. If the engine Is turning at toprevs, and the boat is slow, this meansthat the prop Is too small. If, on the otherhand, the boat is going at a reasonablespeed and the revs are well up withoutbeing too high, the prop is about right. If itIs slow, with the revs well down, then theprop is too big.

From here, you have to make adecision. If you want the boat for sport, torun round the lake on Sundays, and theprop is about right, then there is no realneed to change it. If, however, you wantto race, then you need the right one.Now, a C-7 is the middle range prop in

to page 131

128

weVe earnedthe namechampion

EKIogictrol

Sport flyers around the world have discoveredthe quality and dependability that the EKChampion offers. The confidence that you arefiying with the best equipment available andknowing that your radio Is backed by the mostexperienced digital R/G company In the world,makes this radio the ail-time Champion.

The Champion transmitter provides 5-channelsfor control with two 2-axis sticks, plus onelever for non-centering auxiliary control. Thetransmitter has a voltmeter for quick referenceand a light-emitting diode (LED) charging indicator.

The receiver is crystal controlled superheterodyne, with a double tuned front end. TheChampion receiver has an operating tempera

ture range of 0 to 140''F. This, along with a450 mAh airborne power supply with highvibration, shock resistant ceils, ensures dependable service under all operating conditions.

The Champion system also includes 4 EKSuper Minature servos. The light weight combined with an output thrust of 4 lbs. allowsyou to handle any model from 1/2 A to 1/4scale with EK's SM servo.

Your Champion also includes nicad batteries,switch harness, transformer isolated wallcharger and charge cord, transmitter antennaand ail necessary mounting hardware includingservo and receiver trays.

EK also provides the most generous full yearlimited warranty in the industry. For ail thesereasons, and many more, we've earned thename Champion.

For our full line brochure, write EK PRODUCTS, INC., 3322 STOVALL ST.,IRVING, TEX 75061, U.S.A. Distributors and Dealers contact us for our

new merchandising program.

EK-ProductsReliable radio control systems © 1978 EK-Products, Inc. 784

MISSION TO GIBRALTARBY

KEN WILLARD

The fascinating true story of Ken Willard's World Waril advehfu^es a^The w^ath^rofficer assigned to General Eisenhower on Gibraltar.--^yhe, spdQifiC'm —observations of the state of the sea, and forecast thb'cpnfiitiops expe'Gted\p e\ist for'^eallied forces'North African invasion landings/', \

With the passage of time, this top secret assigpment=ht^s beerividellas^ified'' andcan now be told — the conflicting forecasts; the dangerouk flights'-of the LockheedHudson, ten feet above the crests of gigantic wayes several hundred miles at sea; thebrushes with death;.«hd"the almbst unbelievable coincidences that led to survival.

That, and much mdye, including some^. hilarious anecdotes about personalexperiences'aloflg the way a taxi dancer, a furious staff officer, a non-plussed Frenchg^prd^ fend other interludes.^ M|'a dociimentary. No story line. Just what happened. And a thoughtful query attft^nAjhat any reader might ask of himself as well. Don't miss it.

j^vailable soon, at your favorite hobby shop, or direct from ROM AnthologyLibrary Bdoks.,Order Now! Price — $4.50,

ORDER YOUR COPY TODAY!!!

R/C MODELER MAGAZINE

P.O. Box 487

Siena Madre, California 91024

Enclosed please find $ for

MISSION TO GIBRALTAR

$4.50 POSTPAIDCash, Check or Money Order Only.

No billing service,allow 3 to 4 weeks for delivery.

copies of MISSION TO GIBRALTAR @ $4.50 each (U.S.A. 1st Class $5.50). Californiaresidents add 6% sales tax. Orders outside U.S.A. $5.50 (Air Mail $7.50). APO's and FPO's postage free.

NAME

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POWER BOATING

from page 128/68

the Gale line for a .19 engine in a monohull. If the engine was screaming itshead off and getting nowhere, you needa bigger prop, so you look on the back ofthe packet and see that the next size upis the G-20. So you buy yourself a C-20and try It. If, on the other hand, the revswere very low, then a change down Insize is Indicated and you go to an A-7.A word of warning here: I have stated

a purely hypothetical case, so don'tquote me. The most Important thing todo Is to get some expert advice — andbe careful who you pick to advise you;the guy with the big mouth is not theexpert, as a rule. Every club has a loudmouth but, if you observe carefully, youwon't see him running many boats — hespends too much time talking I Go ratherfor the guy who says little but does a lotof running: he is the one who generallyknows.

I have only quoted two brands. Galeand Octura, but there are others around.Some props are plastic, some are metal.It Is quite feasible, If you use plasticones, to cut down the diameter so thatthe prop is tailored to your requirements.The same thing Is true of the metal ones,but in this case the best tool is a Dremel

grinder. Again, some metal props aremalleable, and here you can adjust thepitch by bending the blades with a pair ofgrips padded with material between thejaws. And at this stage you are movinginto the expert class. Personally, I usean electronic audio tachometer which

tells me accurately the revs of the engineat any time while the boat Is running.Then, by playing with both the pitch andthe diameter, 1 can tailor the prop to getjust the size I need for that engine. Ihaven't actually tried one, but I know thatGlo-Bee (see ads) make a smallaudio-tach that works on the

comparative system. It may not be tooaccurate — I don't know that — but it

would be very useful for comparing theperformance of a prop before and aftermodification.

Another very useful tool is the Hug heyProp Pitch Gauge, which not only allowsyou to set pitch for theoretical speeds,but also allows you to check accuratelythat both blades have identical pitch —something that is practically impossibleto do by eye.

It Is just not possible to tell by eye orear whether a mod has improvedperformance or not. If you haven't got atach of some sort, and don't want to buyone, then there is a very simple methodof checking. Put two buoys in the water,about 60-70 yards apart — the exactdistance just doesn't matter — and timethe model, at full speed, twice each way.Write these times down, and calculatethe average time. Keep this record

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131

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The Hughey prop measuring gauge -a most useful device for any modelerwho wants to get the maximum out ofa prop. Hughey also offersprop-makers kits and materials.

carefully. Now modify the prop, orchange it, and go through the same thingagain. This way, you can tell very simplywhether the performance is the same,up or down. It's efficient, and cheap!When you have the prop just right, and

if it is a metal one, then very carefullysharpen the edges, and polish the wholething. I use a jeweler's paste and a mopin the Dremel, but this firm, in fact,makes a buffing compound which worksjust fine. Sharpening and buffing, orpolishing, is one of the secrets of thereally fast boater, and can make a bigdifference, but only if the prop Is the rightone in the first place. I hope this will giveyou some idea of how to go about thatselection.

In case you have any trouble gettingsupplies, here are couple of addresses,but do try your local model shop first,they usually stock these things, and it'snot fair to them to jump the circuit. J.Gale Products, 8030 Fordham Road,Los Angeles, California 90045; OcturaModels, P.O. Box 536, Park Ridge,Illinois 60068; Hughey Boats, 840 East64th St., Indianapolis, Indiana 46220.

♦And that's it for this month, see you all

next time round. □

D.H. GYPSY MOTH

from page 65/64

or the other. To perform loops, stallturns, and Split S's, you'll need fullthrottle on entry, but closed throttle fromhalf way. Rolls, and flick rolls need fullpower all the way. In a spin, she rotatesquickly, but descends slowly and exitsquickly on neutralizing the controls. Sheneeds full up, full rudder/aileron, andonly enters a true spin about 1 in every 4attempts.

Stalls are fairly abrupt, with no wingdrop. However, because of the abruptstall, 3-pointers are not possible. I've

to page 134

132

TAKING OFF INDIRECTIONS.First off, we've changed our name. DavePlatt Models Is now called Pica Products.

That in itself is significant, but the big news'here at Pica is the excitement of all the new

ideas and products we're introducing.

Pica is improving and updating our existingline of kits. The Waco, the T-28, Spitfire andFW-190, all proven flyers and consistentcontest winners, are undergoing renewalto keep them on top of advancing R/Ctechnology.

We're expanding our line. Pictured above isthe flagship of our new fleet of kits, theDuellist 2/40. The Rapier, an exciting newpattern ship, is just now coming off thedrawing boards. Plus a whole series of newmedium-sized kits is planned.

We've added a superior new fast drying glueand a revolutionary new type of filler. Andwe're going to introduce a group of customR/C accessories in the near future.

We've got a new name and fresh new ideas.Now we're Pica Products, and we're takingoff with innovations in modeling.

Duellist 2/40

Wing span: 67"Wing chord: 14"Total wing area: 795 sq.''Fuselage length: 54"Stabilizer span: 27"Verticle fin: 10-1/4"

Rec. engine: .23-.40Rec. fuel tank: 8 oz,

Gear: Fixed or retract.

Channels: 4 (5 w/ret.)

Control functions:

Ailerons, Elevator

Throttle, Rudder

Construction: Balsa.

Plan sizes: 35"x 67"

Instruction manual

and construction

photos included.

Kit includes: Die cut

balsa, shaped parts,hardwood, plywood,aileron torque rods,

hardware and

sample fillit.

Flying weight:6-8 lbs.

The Duellist 2/40 hasbeen designed as aneasy-to-flyand safehandling twin enginedR.C model. Combiningelegant appearancewith simple structure, it'sideal for the modeler

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a further level of

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D.H. GYPSY MOTH

from page 132/64

found that compared with monoplanes,small bipes like this suffer from a largerdrag rise at high angles of attack. A taillow wheeler is the best landing tactic, tokeep above stalling speed. A doublearea tai l might remove thischaracteristic, but I'm not worried by it.

Well, I've enthused about her for longenough. She's a picture in the air,whether doing aerobatics or justchugging. I think you would enjoyowning a Gypsy Moth. □

BALSA WOOD OVERCAST

from page 59/56

Reducing power to cruise still required

notrim adjustment.As mentioned, the Quadra was

running a bit rich yet and the fuel tankwas down, so a pass around the fieldfollowed by the first landing wasaccomplished without incident. Theglide was steady and fairly steep due tothe drag, and a bit of power added on theflare gave a slow-motion landing at anestimated fifteen miles an hour.

A close inspection was made of theentire airplane to see if anything was

Stick-On WeightFits into close areasNo epoxy neededSticks into positionincrements of V* oz. & Vz ozForms to contour

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A balanced Spinner is just asimportant as a baianced prop.

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Nose WeightChange weight easily at the fieldAllows quick test flights at variousbalance pointsEasily tightens behind prop nutWith or without spinner4 sizes Vz oz., 1 oz., IV2 oz„ 2 oz.

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134

Atlfour

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For technical advice, our Service Centers and the members of our Flying Team areat your service. Feel free to give them a call if you need help with your Rev-olution.

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FLYING .TEAM MEMBERS: |^ California: John Simone, Jr. (714) 837-2676 • Curtis Croker1213) 697-6090, .

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coming unglued of loosened. Theelevator travel was reduced, fuel addedand the needle valve leaned.

The second flight lasted twentyminutes, giving me a chance to study theGere's flight characteristics and topractice coordinating aileron and rudderon the single stick Kraft KP-7CS. Flyingthe smaller sport and pattern shipsspoils one because the rudder is seldomused except for snaps and spins andknife edge in flight, but these big jobs

require the use of coordinated rudder inthe turns to keep down the wallowing.Also, rudder alone just skids the Gere. Itcan be turned eventually by rudderalone, but in a wide, flat circle.

On the third flight I took off, climbed toa hundred feet and came backoverhead. The Quadra quit abruptly,giving me a chance to investigate theGere's dead stick performance. Therewas no wind, so a keyhole turn wasmade, the plane gliding nicely and taking

a surprising amount of time to descendto a beautiful three point landing. Thewing loading is only 20 ounces persquare foot, but the thing has a built-inheadwind and I somehow expected asteeper glide angle in a dead stickapproach.

I could find no reason why the Quadraquit as it did, so I richened it a bit and flewagain with no problem, makingnumerous low passes while my buddy,P.Q. Davis, burned up film in the

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Omega.Loops are a study in a slow motion

flight and rolls are sluggish, even withthe four aiierons, necessitating toprudder and down elevator in the

appropriate sequence to get smoothstraight and level slow rolls. In otherwords, the Gere probably handles justabout the same as its ful i size

counterpart. You have to fly it throughevery maneuver, but it is stable enoughto make long passes hands-off.Okay, so I'm hooked. But both you

and I know people who are hooked onmuch worse things, eh? You bet.And, contrary to what it may seem,

this articie is not a testimonial for Bud

Nosen, Kraft Systems, Quadra oranyone else, Rather, it is a testimonialfor Big Airplanes. It just so happenedthat I used materials, equipment andaccessories so wonderfully available toall of us in this fantastically fascinatinghobby, and the manufacturers I mention.

aiong with all the rest, deserve a plugnow and then for their efforts and

ingenuity and skill.As for Big Airplanes, I hope this has

been the added push some of you haveneeded to get you started. If you've beenon the fence as to whether you shouldtake the jump and build one of these bigbeauties, do it. Don't wait. Pvlore andmore Big Airpiane pians and kits arecoming over the horizon, now that wehave bigger engines and prop drive unitsto power them. Big Airpianes is a rapidlygrowing trend that wili hopefully be withus for years to come, so don't pass up alithefun.

Just because they are big, does notnecessarily mean it wiii take longer tobuiid one. Actually, the time required tobuild the Gere, even with all thechanges, was no more than the time ittakes to build a nice looking Aeromaster,and less time than it takes to buiid a

Dave Platt Waco. More material, sure.

but no rnore time because they arehandier to work on. They crowd a man'swork bench, and until you learn tohandle them in a confined space, theceiling is liable to get marked up some,but it's worth it.

Transporting is more of a problem, ofcourse, but many is the time I've seen amodeler show up at the field in a runt carwith the plane tied on top and the wingsinside.

Besides, look at all the extra groundsupport equipment you don't need totake, like glow plug battery, extra glowplugs, starter, fuel pump, field cradle andthe like. Shucks, all you really needbesides the plane, transmitter and agallon of cheap fuel are a prop wrench incase the engine backfires and loosensthe prop, a 6-32 Alien wrench for thewires, a common screwdriver to snapthe cievises open, and your ESV. Apessimist might carry an extra prop.

to page 136

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g Electronic Throttle Model RET-4Gives fully proportional forward and reversecontrol from only one channel. Controls Astro-flight 05 & 10, Dumas. Vantec IM-4 and othersrated 3.6-12VDC. 10 amps max. Compatiblewith all 1 /12-$caie electric cars,

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Why the newCox/Sanwa Radios areyour best buy in R/C.

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The 60 MAXIMIZER^"" fits engines with '4" shofts and adoptsto 5/16" shafts or smaller engines. Construction is a sturdycost aluminum alloy frome, balonced ports, Aircraft quality beor-ings and long life double belts for engine safety. Weighs only21 ounces.

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BALSA WOOD OVERCAST

from page 136/56

Since the Southern Products' Six

Shooter fuel pump and Du-Bro"s rotarypump are both susceptible to petroleumbase fuels. I use the Oklahoma creditcard method of fueling and defueling —siphoning. Works great.Okay, tigers, that's it, so sic 'em! Don't

choke on dust whilst rldin' drag, but getup there in front and build yourself a BigAirplane. □

SIG COLT

from page 55

Sig recommended using paint on thefoam wing, since it was in one piece andrelatively different to most kits, it was feltadvisable to follow the instructions. Thewing was sanded lightly with 240 drysandpaper then was given a coat of fillerwhich also seemed to harden thesurface. Syncloid^®, a spackling paste,is thinned with water to the consistencyof cream and a coat of this was paintedon the foam wing, it was allowed to dry24 hours and re-sanded. This newsurface sanded just like balsa and filledwell. It apparently had no derogatoryeffect on the foam. If you plan to use thisproduct as is or thinned, please testwhere it won't show. The Syncloidspackling paste is one of the best fillersfor holes, dings, and cracks, in balsawood construction that we have used fora long time. It is available in most homerepair centers and is great as is orthinned.

After filling, sanding, and wiping cleanof all dust. We coated the whole wingwith light blue Sig Plastenamel.Whendry, sand with 400 wet sandpaper. Giveit a second coat followed by sanding with600 wet sandpaper. Then apply trimcolors or use low heat plastic iron-onfilm. Rub the wing down with whiterubbing compound, it will take on a dulloverall sheen, but don't worry, a goodauto wax will bring back the gloss.

The RCM prototype fuselage and tailwas covered with cream and light blueSuperKote plastic film, which is not onlyof excellent quality, but may be ironed onover the aforementioned Plastenamel— as a trim. Just don't iron too long inone place or let the iron slip and hit thepaint. Be sure to keep the iron on lowheat.

Only one caution: be careful, theelevator pushrod exits on top of the stabplacing the horn on top of the elevator.This makes it move just reverse to thenormal hook-up.

Flight testing was done at El Miragedry lake just south of Edwards AFB TestCenter. If this type of terrain is goodenough for the Air Force, it is goodenough for us. Nothing but a dry, flat,smooth surface between you and the

to page 141

138

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R/C MODELER MAGAZINE'S

MODEL OF THE MONTH CONTESTThe Model of the Month Award Program is designed to encourage the sport and novice competition flier to submit details cff his most recent kitor scratch-built model to RCM in order to encourage general model craftsmanship and the overall promotion of R/C flying.

Each month R/C Modeler Magazine will award a 371 Variable Speed Moto-Tool as illustrated in the photograph. The second and thirdplace winners each month will receive a one year subscription to R/C Modeler Magazine or, if they are a subscriber, an extension of theircurrent subscription.

you could win • • •A NEW

371 VARIABLE SPEED

MOTO-TOOL

FROM

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Mofch the Speed to the job.5,000-25,000 rpm. Dial-A-

Speed in a kit puts you in complete control of any project . . .grinding, carving, drilling,sanding, buffing, sawing, de-burring, roufing, pofishing, engraving, sharpening, shaping. . . dofng hundreds of crafts;

hobby and do-it-yourself pro*jects more precisely.

FIRST PLACE

W.J. KyncyOroville, California

Scale 1938 PBY was scratch built from Sid fvlorganPlans. Wing span 9 feet with a total weight of 18pounds. Powered by two Super Tigre .60's andcontrolled by a Futaba 5 channel. Finished withCoverite and K & B products. Markings are copiedfrom brother-in-law's PBY of 1938.

AUGUST WINNERS

SECONDPLACE

Eugene MartinFelton, California

A Curliss Hawk F6C-1 is scratch built from drawingpresented by Wylam in Model Airplane News. TheHawk was done in 2"-1' scale including all ribs,

spars and stringers. A Cirrus 700 series radio andH.B. .61 P.D.P. complete the package. Coveredwith flat aluminum Super MonoKote sprayed withclear Satin Hobbypoxy. 122 ounces with a span of

83 inches. 700 hours involved total.THIRD PLACE

James M. Carter

Pittsburgh, Pennsylvania

Focke-AchgelisTypeSI —German, circa 1937scratch built semi-scale twin rotor autogyro. Rotorspan 70 inches, fuselage length 42'/2 inches, and

weighs out at 68 ounces. Uses an O.S. Max .35 anda 3 channel Cirrus radio. Original design by SkipRuff appeared in Model Builder Magazine. Flew

successfully on first attempt.

RULESA. Model Aircraft Origin

1. Any kit — wood, fiberglass, foam, or ARF kit Is eligible. Any scratch-built aircraftbuilt from magazine or original plans Is also eligible.

B. Category1.AII types of radio controlled airplane models.a. Scale

b. Patternc. Racingd. Fun-To-Flye. Original Design

C. Entrants to submit:1. Color photo or slide, size 35 millimeter or larger.2. Black and white glossy photos (any size) of both sides, top. rear, front, and bottom

views.

3. Close-up photos may be submitted on detail work if desired.4. A short write-up giving dimensions, weight, power, radio, etc.5. A statement that:

a. The submitter was the sole builder of the model. •b. Parts and/or accessories used were part of the kit or available to all modelers at

retail outlets.

c. All non-available or special parts were built by the hands of the submitter.D. Judging will be on:

1. Workmanship ' j_2. Quality of finish.3. Attention to detail

4. Subject of model or difficulty of ttie project will count in judging.E. Judging will be done by RCM Editors Don Dewey and Pal Crews.F. Persons not eligible:

1. Members and employees of RCM or any other model airplane publication.2. Members and direct or Indirect employees of Dremel Manufacturing Co.

H.

I.

This c

3. Members and employees of any manufacturer of hobby kits, hardware orsupplies.

4. Anyone engaged in the wholesale or retail distribution of hotoy kits, hardware orsupplies as a major source of income.

Models not eligible for submittal are:1. Models that have been submitted for judging of workmanship at any major AMAsanctioned contest and have placed 1 st, 2nd, or 3rd in that judging. Flying pointsas a final standing do not apply.

2. Models that have been built for display purposes only.3- Models that have been built for manufacturers demonstration purposes.4. Models ihat have won a simitar award in another publication.

Entrants who have models that qualify under these conditions are eligible to enter.Included with the entry should be the entrant's AMA and FCC numbers, and also, thename of his club, if any.Prize Information:

1. A Dremel 371 Variable Speed Moto-Tool will be awarded to the monthly winner.An Illustration and description of the kit will be included each month along with thewinner s name, address, club, etc. The second and third place runners-up will beawarded a one year subscription to R/C Modeler Magazine.

2. Dremel Manufacturing Co., of Racine. Wisconsin will be notified of the monthlywinner immediately after a decision is reached by (he judges so that the kit awardcan be received by the winner prior to the issue of that months RCM,

General:

t, All contest entries must be addressed to RCM Model of the Month AwardProgram, R/C Modeler Magazine P.O. Box 487, Sierra Madre, California 91024,

2-All photographs and materials submitted by the contestant will become theproperly of FVC Modeler Magazine and none will be acJrnowledged or returned.

ontest will be null and void in any state or locality where specifically prohibited by law.

GLO-pn

SIG COLT

from page 138/55

horizon. With that much run on take-off,you can run till lift-off occurs. This wasn'tnecessary with the Colt — the .15 upfront lifted it off after a short run and was

throttled back as soon as sufficient

altitude was acquired. Most of the flyingwas done throttled back, only whenclimbing for a loop or gaining speed for aroll was full throttle used. Remember

you do not have the expansive wing areaof a trainer. When doing maneuvers.

maintain your altitude lest the groundrise up and smite thee. The Colt Isresponsive so take care when pushingaround the stick until you have had timeenough to feel It out. □

NEW ERA 440

from page 54

. . . .set at zero degrees.The production models now have a twodegree right thrust built Into the firewall.

Assembly of our prototype wasstraightforward and no difficulties wereencountered. The instructions are brief,but adequate for the average builder

with some building experience behindhim.

We had received, from Duke Fox, anew Fox .45BB engine and tuned pipe.This was an excellent opportunity to tryout the engine. The engine was too largefor the K/H mount so we machined acustom mount from aluminum. Themount had to be kept narrow on theoutside, yet large enough inside tohandle the engine along with drilling forthe nose gear. After Installing the mountand engine, we found the fuselage hadto have 1/4" added to the nose withsome filling required with resin andmicro-balloons. We achieved a goodblend with a 2V2" Midwest spinner. The

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aft end of the tuned pipe was supportedby two 1/16" X 1/2" aluminum struts. Atthis point we were trying to decide whywe hadn't just used the furnished mountand installed a smaller engine. The Fox.45 with pipe was just too intriguing topass up.

In making the fuel tank installation, wefound that while the 8 ounce Sullivantank could be squeezed through the F-2bulkhead, it was impossible to remove.We ended up with a pull tab on the tankmade from reinforced glass strappingtape. Just wrap tape around the tanklength-wise with an added length to gethold of. There is room for a sleeve of 1 /2"foam around the tank. A little talcumpowder helps insert the tank into place.The entire model was covered with

white Super MonoKote and trimmedwith blue and orange.Our prototype tracked well during taxi

tests, but seemed light on the nosewheel. Possibly the main gear could beangled back slightly. On the take-off roll,the New Era 440 was very sensitive tosteering and can be easilyover-controlled. The first take-off was

normal with only slight aileron trimneeded. Under power, the elevator wasvery sensitive with the recommendedthrows. We moved out one hole on thehorn which made it just right.We had used the minimum dihedral

called out and found the aircraft

performed very well. On the flat wingversion, the rudder was tried fordirectional control by itself and wasuseless: when used in conjunction withailerons, the performance was great.We tried "tail slides and hammerheads"and it did its job well. The New Era 440will do all of the maneuvers that the

pilot's skill will allow.Under low power, or dead engine, the

aircraft penetrates very well and all butrudder controls were functional. Poweron landings are super — it settles downand stays put with no bounce.

During the preliminary flights, someengine and fuel problems wereencountered. After the pressure tap onthe tuned pipe was relocated and ourFox .45 had some running time,everything came together. The enginestarted hitting its peak and the idle camedown where we wanted it. The moretime we run the engine, the better theperformance gets. Duke has a goodproduct here, if you just give it an hour orso of break-in time before expecting thetop performance. We were using 10%fuel by George Aldrich and a Top Fliteprop. We had a slight evidence of fishtailing on one high speed pass but feel itwas the severe wind conditions we wereflying in that day. It only happened once.

For those who don't have a lot of timeto build, or even if you do, we highlyrecommend the New Era 440 as an

excellent aircraft and at the price of$74.99. it's a real bargain. A tapered

to page 144

142

m

OURBRANDNEWRC12EUI0KSLIKEAWINNER

ITSHOUIDSerious RC Car enthusiasts will find

the Associated RC12E familiar.

That's because we've designed our1:12 scale electric from the lessons

learned in winning the 1977 WorldRC Car Championships and in dominating RC Car racing internationaliy

since 1971, And the RC12E is

designed to get the same resultsAssociated is famous for.. , like

sweeping the first four places in the1977 ROAR NATS in its competition

debut. Check out some of our

winning features;

Sulcli Kioell's factory Associated RC200-1:8 scale,gas poweied RC car. 1977's World RC Cor Champion.

■ Kits priced from $54.95.• Fiberglass chassis plate/pre-cutand drilled.

• Racing slicks/bonded and truedon rugged, lightweight nylonwheels.

• Mid-engine configuration/for race-winning handling.• Servo saver/to protect expensiveservos from abuse.

• Cam-lock positive gearalignment/3 nylon spur and 3machined steel pinion gears for 9different gear ratios.• ROAR Legal

Associated El8ctrics/1928 East Edinger/Sonta Ana/CA/92705 (714) 547-4986DISTRIBUTORS AND RETAILERS: WRITE OR CALL FOR OUR SPECIAL INTRODUCTORY PACKAGE.

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SUPER SPECIALS2 Chonnel Sjngle Uick list

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servos nicadsCox Bi):.!} 139.95 93 2 no

Logictiol Ntnibm 135.00 98 2 no

2 Channel Duo! SticUCox 802S 99.95 70 2 no

furobo FP-2GA 109.95 69 2 no

Futobo FP-2E 139.95 93 2 no

2 Channel Wheel

Cox 802t 139.95 93 2 no

Futobo FP-2F 139.95 93 2 no

3 Channel Single itick

Cax 8031 159.95 104 2 no

Furabo FP-3F 179.95 118 2 no

Fulaba FP-3FN 199.95 131 2 yes

Logictfol LR8-3 159.00 100 2 no

Logictfol Rangei 179.00 113 2 no

3 Channel Ouol Stick

Cox 8033 229.95 US 3 yes

4 Chonnel

Cox 8040 299.95 189 4 yes

Futaba FP-4N 299.95 190 4 yes

Futobo FP-4FN S17 269.95 175 4 yes

Logictrol Nimbus 309.00 187 4 yes

5 Chonnel Duol Stick

Futobo FP-5FN 349.95 217 4 yes

Logictrol U)8 2-S 285.00 179 4 RxonlyLogictrol Chompion 369.95 -225 4 yes

S Ctronnel Sirsple stick

Logictrol LRB 1-5 310.00 197 4 Rxonly6 Chonnel

Cox 8060 369.95 230 yes

futobo FP-6FN 359.95 227 4 yesFutobo FP-6FN S17 319.95 202 4

7 Chonnel Duol Stick

futobo FP-7G 579.95 392 4

Logictrol Super Pro 419.95 255 4 yes

7 Channel Sinpie Stick

Logictrol Super Pro 440.95 270 4 yes

HONORED THRU AUGUST 15. 1978

Radios

Cox 4 Ch8040 SI83Cox 6 Ch 8060 223

Logicfrol LRB2-5 173with Tx Nicods 199

MRC 775 w/MR-70 268bal l bearing servos

AIRTRONICS KITS

Q-Tee 14.50S-Tee 14.50Olympic II 34.00Aquilo 46.00H.D. Launch Pall 24.00Cox Engines

Cox Engines

Medallion .049 R/C 11.50T.D. .049 or .051 12.60

CALL for FAST COD or CREDIT CARDservice or send money order or certifiedcheck'including S2.00 For postage, handling ond insurance. KY. residents add5% soles tax. COD's ore cosh only.

No COD chorge on purchases over .50^85<; otherwise. i

MASTERCHARGE and VISA ACCEPTED

THE MODEL FACTORY IHTRODUCES THE

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Custom molded ur'ectiane fuselageFoam wing cor-es and shieeclngCustom molded canopySteerable nose geerHardware, landing gearNo built - up structuresEasy to fly, stablePattern or gilder conversions

One of the most unique and clesneat flyingmodels avsllable anywhere

Pntnl Pgndinf

1307 e. MAIN ST.. ALHAMBRA.CALIF. 91801 12131 S76-0647

NEW ERA 440

from page 142/54

wing is available to fit withoutmodifications. It may be ordered asstandard or in addition to the constantchord wing. The tapered wing price is$20.00 if it is ordered separately. □

VOYAGEUR II

from page 52/48

smooth with the curving fuselage edges.The fuselage is now completed by

attaching and contouring the nose block;then complete the empennageattachment. This last step starts withaddition of the 3/32" x 1/4" balsa tailmounts just forward of the rearmost F6.Epoxy your completed V-tail assemblyto the fuselage by first notching the lastF6 with a 90° "V" cut of the proper size,Run a square sanding block on edge inthe mounting area to "square up" themounting surfaces. Trial fit theempennage often during this process toassure that each tail fin is equal heightabove the work surface. (See plansection E-E during this entire process.)Form and Install (temporarily) thepushrods, and then add the twomini-horns to the elevens. The fuselagetop sheeting around the pushrods maynow be formed from a scrap of 1 /16" plyor balsa, but do not cement it in placeuntil the pushrods are permanently inplace. Now take a break.Wings:

Study the wing plans carefully andyou'll probably not build two left wings orend up with one wing longer than theother. And remember that your wingpanels will be only as straight as thesurface they are built on.

Begin wing panel construction byforming the lower wing spar assembly.First, re-check your spar lengths, shearwebbing end angle accuracy andalignment and, above all, insure that youlay out all pieces correctly to form oneeach left and right center panel spar.Next, firmly cement the webbing to bothsides of the 1/8" x3/8" main (bottom)spruce spars. The small cross sectiondrawing on the plans will aid you in thisstep. Clamp with plenty of spring typeclothespins, and sight along the spars toinsure they are not setting up with aspan-wise warp. When dry, you canposition the left main spar over waxpapercovered plans. Then pin down theleft main panel trailing edge. Beforeinstalling the wing ribs, mark and drillboth WP-1 's for the 3/16" alignment pin.Slide the 11 main panel balsa ribs intoposition, and add one WP-1 to the centerroot. Note how the pre-cut angles oneach end of the spar supply the properslant to the end ribs for the dihedralbreaks. Cement all ribs in place and

to page 150

144

Habbv Shack _

RADIO-CONTROL

ALMOST FLY

SPOftTAVIAftf-SBUSTOR .0« W"«

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SPOftTAVIA RF-5B

plus aero sport two system

Both for$12999

SPAN: 58.7 in.

AREA: 434 sq.in.WEIGHT: 1.2 lbs.

RADIO: 2 channel

The SPORTAVIA RF-5B Is an ARF

powered glider which comes complete with a ■

Testors .049 engine, a ready made ABS plastic formedfuselage, and built up balsa & spruce wings which are already^factory plastic film covered. The kit contains: engine, enginemount, landing gear, wheel, spinner, pushrods with keepers,hinges, control horns, servo tray, bolts, nuts and liquidcement. Also included are full size illustrated plans with

Instructions for radio Installation. To finish, simply join thewing halves, fit the stabilizer, mount the engine (included)and install your radio - now you are ready to fly! Assemblytime about one hour.

RETAIL $75.00

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33For shipping instructions see second pagefollowing

A larger

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Sankyo Ridlcon FactoryNo. 19, Ohara-chollabaahl-ku, Tokyo, JapanPhone: (03) 980-7488

MEXICOEnrique Noguera CoronadoApdo. Post. 33-088Mexico 9, O.F.Mexico

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Alaclronic, Ltd.CarieraSaB No. 12-41P.O. Box 90.671

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SINGAPOREECH0-STt(2UES COMPANY(Q. Kalldaa)27 Mayflower RoadSingapore 20

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VOYAGEUR II

from page 144/48

allow to thoroughly dry beforecontinuing. Position and install the leftmain panel leading edge stock, followedby the three turbulator spars. Use plentyof cement and clamp securely theturbulator which fits between the shearwebbing. When the unit is thoroughlydry, remove the excess material fromeach end of the left center panel andinstall the four 3/32" gussets. Completethe right center wing panel in the samemanner.

The tip panels are completed In asimilar pattern as that used for the mainpanels. Study the plans and photos forcompletion of the wing tip blocks. {Note:The 1/16" wire at the trailing edge of thetip block Is optional.) You will have toenlarge the root rib of each tip panel toaccommodate the two 1/16" ply tipdihedral braces-

When ai l four wing panels arecompleted as described above, you mayattach the tip panels to their respectivecenter panel section. Once again,enlarge the dihedral joint rib at the mainspar to clear the tip ply braces. Youshould have SVz" under the tip with themain wing panel resting on the work

surface. When both wings have beenjoined, sand the leading edge, if needed,to the blunt contour shown on the plans.You may also notch the center paneltrailing edge of both wings for the 1/16"wire. This 2" wire protects the trailingedge from crushing when the wing isrubber banded to the fuselage. Epoxythe wires into the notches. Next, add a3/16" pin and block to the left centerpanel WP-1.The wings are joined with a 3/16"

diameter steel or music wire rod which is

inserted into 3/16" I.D. tubing mountedin each wing half. Study the wing centersection spar detail on the plans beforeproceeding. Sharpen the end of the

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aluminum/brass tubing with a file, anduse it to bore through the two wing ribs ineach panel where the tubing willeventually rest. Be as accurate as youcan; It is better to have a greater angleon the tube than less than that indicatedon the plans. This will result In slightlymore than 2" of main panel dihedralwhich is considerably better than havingless than 2". When both wings havebeen drilled for the tubing, cut the tubingto length and position each piece in awing section. Add the 1/8" lialsa tubebracing and the 1/4" square tube plugs.Trial fit the wing panels with the rod inplace to insure that the proper dihedral isachieved. When you are satisfied,

rough-up the outer surface of the tubingwith sandpaper, and epoxy the tubes inplace. Use plenty of epoxy, but do notallow any adhesive to get inside thetubing. When dry, add the 1/16" balsacross grain sheeting to the two centerbays of each wing half; top and bottom.Finish & Covering:

Cover using your favorite material.Warps in the wing panels can bemanipulated during the shrinkingprocess, but remember that they can beput into the wing just as easily. Be sure totake your sealing iron over each rib andspar, as the covering material is anintegral part of the wing structure. Take alittle extra time during the covering

process, as the effort will be rewardedmany times over at the flying field. Thecolored trimming tape available at mosthobby stores adds a nice accent to mostfinishes and is very easy to apply. Besure to include the canopy outline for afinishing touch. After covering thefuselage, punch in the tow hook holesfrom the bottom. Add the glider superskid, and install the wing dowels.

Next comes your radio gear.Balancing is no problem, but start withyour battery in the forwardcompartment. Pack the battery and yourreceiver in foam for protection, and routethe antenna through the leading edge of

to page 154

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Clarence Lee's articles reprinted by subject category andcompletely indexed tor last reference — plus a completeconslruction article by Henry J. Lopez, never before published, onscratch building a digrtal read-out laehometer. Also other selectedlaatures pertaining to the RC engine. No material In Vol. II has beenraprinled from Vol. I.

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A must lor the serious Scale or Stand-Otf Scale builder, and flyer. Acompilation ol Dave Plait's columns Indexed by subject material.Learn the secrels of scale such as finishing, delaillng. etc.

$3.50

for wiiTsworlli

^mM.

"For Whatll's Worth" Is a subject Indexed collection ofthelinesthints and kinks published during the past years ol R/C ModelerMagazine. This one book, alone, could save you enough for thatnew proportional system. A wealth ol timeand money saving ideas.

$2.50

Prepared by RCM Editors, the For What It's Worth, Volume IIcontains many hints and kinks for shop and Held. Most of theseIdeas have never been published and. In addition, a section on"How-To" ideas Irom past issuesof RCM. Order now and don't missout on this one!

S4.95

For What It's Worth, Volume III, Is a handy money saving hints andkinks book tor shop and lleld, drawn Irom the ever popular For WhatIt's Worth column tram Jan. '71 through July '74. II also featuresmany supplemental "How-To" reprints Irom past Issues of R/CModeler Magazine and is completely subject indexed tor quickreference.

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to covering. You will be taken through every aspect of Ihls subject.Including the construction of a permanent shop hot wire cuttercores; landing gear blocks; and much more. Cover your cores lorless than $1.00.

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compiled to date featuring reprints of all ol your tavorite how-to'sand excerpts from the For What It's Woilh column reprinted for thefirst time and completely Indexed for easy reference. 172 pages nfmoney-saving Ideas.

$6.95

This 20 page pamphlet was written to acquaint the generel publicwith the sport and hobby of RC. An ideal book for clubs and firms —to be given away at trade shows and conlesis or for Inclusion withradios and kits. It's being sold at our cost, and the back cover hasbeen left blank for you to imprint your own message.

2S( each —100 or more 202 each

..... . R/C MODELER MAGAZINE R/C MODELER MAGAZINEPlease send the following RCM Anthology Librai^ Books:

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ODGSONESIGKS TOMORROW'S DESIGNS TODAY■i

MAESTRO FLYERS "DO IT" BETTERand enjoy it more !

EAST COASTAPPROXitlATELY 70S OF THE 1977 EASTERN SOARING LEAGUE CONTESTSHERE WON BY HAESTRO FLYERS. In fact, 3 OUT OF THE TOP 4 OPENCLASS E.S.L. SEASON FLYERS FLEW HAESTROS. DWIGHT HOLLEYPLACED 1sc with innumerable major 1st place wins, BOB BAUGHERPLACED 2nd with 6 major 1st place wins including the L.S.F.contest. DOUG LAW FINISHED 4th with a season of excellentflying and contest wins.

WEST COASTTHREE OUT OF FOUR OF THE NORTHWEST SOARING SOCIETY SEASON TOPFINISHERS HERE HAESTRO FLYERS. DAVE BANKS FINISHED A STRONG'1st with his Maestro Talisman, winning nearly every contesthe entered. In fact his season average including both goodand bad days (no throw aways) was over 93S of absolute perfect. At least half of Dave's contest days included 5 roundsof triathelon. (This is a hard task to get a consistant highpercentage in.) In fact DAVE BANKS' SEASON PERCENTAGE 15PROBABLY THE HIGHEST OF ANY FLYER IN THE U.S. Dave Banksnot only won the N.W.S.S. Season Grand-Championship but healso won the N.W.S.S. First Annual Elimination ChampionshipContest flying his Talisman. Other N.W.S.S. Maestro flyingseason winners were BOB DCDGSON 3rd, and DAVE JOHNSON 4thwinning many of the major contests.

MAESTRO HK. HI SI09.95 MAESTRO TALISMAN $114.95

Send 2 U.S. stamps for a catalog of our complete line ofsailplanes and accessories including the Maestro Talisman,Maestro MK III, Maestro Caliente, Todi, Gull II, HiJacker 11and Dodgson Designs Winch Drum.

The MDfiSON DESKJIS FACTORY AT CAMAKO ISlAHD, WA. (U.S.A.). J5 THE SOLEMANUFACTURER A;iD DISTRIBUTOR OF DOODSOU DESIGNS AROOUCTS. DO NOT BEFOOLEO BY F0RE1G.N IHITATICiiS ANO NAMESAKES: J

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HORNER'S SALES300 DIXIE HWY., BEECHER, IL 60401 — (312) 946-2515

Specializing In Miniatsure Aircraft EnginesCall me and I'll help you get power for your big "job." — Gene Homer.

THE BIG ROPER — $59.951.40 Cu. In. Engine — while they last

Clow plug adapter, $10; Prop adapter kit, $19; Frontradial mount for glow, $14.50. Large props available.Spinner hub, $22.50 rear.

Special Introductory OfferRoper 1.9 Cu. In. Engine — $69.95

Prop hub, $19; Mount, $14.50 — Special —Compfele with mount and hub, $79.95.

WILL SHIP UPS COD.DIRECT DJST. FOR THESE ENGINES

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Dealers & quantityprice available

QUADRAThe Quadra is two cu. in. •two H.P. @ 10,000 rpm -uses regular gas mixed wiihoil - costs less to run than. 15size glow engines - flies 1/410 T/3 size models withrealistic performance.

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VOYAGEUR II

from page 151/48

the hatch. Secure the other end with arubber band between the empennagehalves. Set your control throws for 1/4"on the elevator travel each way and 3/8"to 112" on the rudder each way. If this isyour first V-taii, remember that for a rightturn, the right elevon goes down and leftone goes up. Up is up and down is downas usual.Flying:

If you've built your Voyageurcarefully,it will fly right off the building board. Try afew hand launches In deep grass to gaina feel for the craft's speed and controlresponse. Do not launch it like a spear,but rather, let it glide gently from yourhand from an easy, nose low release.Go easy on the elevator, as it is better toland a little hot than to plant the nosefrom a stall.

On the first hi-start launch, you'll findthat she tracks fast and true all the wayup with only minor corrections for thewind. If the launch Is a good one, thetransition from tow to glide is automatic,and you're soaring without touching thesticks. Normal glide is medium slow withthe nose about level with the horizon.The first flight will give you some idea ofthe sharp control responsiveness toboth pitch and trim. I have yet to observeany fishtailing, even at slow speed.Loops are tight, stall turns are quick ifstarted with plenty of airspeed, and rollsare possible, though somewhatdished-out. Since you're bound to havea stall or two, you can rely on them beingstraight ahead and easily recoverable.Landings are routine, hand catches areeasy.

The Voyageur II is no twelve footmonster, but she will thermal on light tomoderate lift. A little weight is nice on thewindier days, and It is here that she isreally "at home". 1 have had longerflights on days when the wind hit 15knots than I have experienced with myother kitted sailplanes.

I hope you'll enjoy your Voyageur, andcan some day experience the thrill oflaunching your own sailplane design.n

LAZY ACE

from page 43

The Lazy Ace tips the scales at 9V2pounds which gives it a wing loading ofjust over 12 ounces per square foot. Thismeans the aircraft is flying on the wingrather than just on the engine and puts ItIn the class of a slow, gentle,predictable, have fun, Sunday -flier.

The structure of the Lazy Ace is strong

154

and very light and goes togetherreasonably fast. It is not complicatedand the \well fitting parts are largeenough to make for easy handling. Thefuselage sides are built up with sprucelongerons and vertical and diagonalbalsa braces. The primary fuselagelongeron is 1/4" x 1/2" to give extra beefto the structure. The built up sides arejoined with balsa cross braces to form abox structure. 1/4" sheet balsa formers

are added to the top of the box. Theforward turtle deck is covered with 1/32"ply (one piece) from the 1/4" firewall toaft end of the rear cockpit. The rear turtledeck is 1/4" balsa stringer with the maincenter stringer being spruce.The cabane struts, supporting the

upper wing, are made of 1/8" piano wirewith 1/16" wire cross bracing. It is veryimportant to build these true withoutadding positive or negative incidence tothe wing. We built a simple jig to insureidentical cabane sides. Lay out thecabane configuration on a piece of 1/4"ply approximately 12"x12". Drill two1 /B" holes in the ply where the struts willnormally mount in the fuselage. Installthe pre-bent 1/8" wire into these holes.Drive in small brads along cabane layoutto position the 1/8" wires at the properangle. Next, align the 1/16" wire crossbracing using weights to hold it in place.Apply Stay Clean soldering flux to eachjoint and solder with a heavy dutysoldering iron. Remove, carefully, fromthe jig and wrap each joint evenly withthin copper wire. Set back in jig andre-solder all joints. This methodguarantees accuracy, neatness andcomplete success. It can really mean thedifference in a good flying model.Because this is a super large biplane,

you must build two large wings. Whenyou break them up into panels, theybecome easy to handle and build up fast— especially with the simpified wing tipdesign chosen by the designer.Typically, a wing panel is built as follows:The 3/32" leading edge and trailing edgesheeting are pinned to the plans. The1/4" square spruce main lower spar and1/4" X 1/2" spruce lower trailing spar arepinned down next. Starting with the tip,set in a rib, over the sheeting spars. Apiece of pre-cut 3/16" balsa verticalwebbing is set in next, then a rib, thenvertical webbing, etc. When all the ribsand webbing are in place, the 1/4"square spruce top main spar is set inplace. Next the leading edge, topleading edge and trailing edge sheetingare installed. All the pre-cut pieces fitwell allowing for good ease of assembly.The wing panels are joined with 3/16"aircraft ply dihedral braces making thecenter joint extra strong.The stab and vertical fin are pretty

straightforward, however, some careshould be taken in covering the stab. It iseasy to warp because of the type ofconstruction. You will end up with aslight twist if not careful. Allow ttie glue to

THORP1/8 SCALE COMPETITION RACE CAR KIT

less engine & radio

$195.00

WINNER IN THE TOP THREE CLASSES IN 1977 SOUTHERN

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Variable speed transmission & differential.

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THORP MFG. THORP R/C RACEWAY1655 E. Mission Blvd., Pomona, Calif. 91766

(714) 622-6518

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SEND "I.OO FOR COMPLETE CATALOG OFAIRCRAFT,HARDWARE, & ACCESSORIES,PLUS

A DESCRIPTIVE •MINU BROCHURE.

KING'S R/CYour hobby shop in Redwood City, CaliforniaHome of the WAVEMASTER amphibian

Featuring* R/C Sets * Controline & R/C Planes *

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Shop our retail dept., or write us your needs730 Broadway (So. of Woodside Rd.)Redwood City, California 94063

(415) 366-8715

noon - 6 p.m. except Sunday

155

^ealisttc

r/e yachtsr

vortex Model Engineering

Department RCM210 East Ortega Street

Santa Barbara, CA 93101

Mail order only, no dealers or distribu

tors. For illustrated brochures describ

ing all of our model yacht products,

send $1.00.

dry thoroughly before removing it fromthe building board.Our model was covered entirely with

Coverite Permagloss requiring close to5 yards. With careful management youmight be able to cut that down some. R/SPerfect Paint was chosen for the trimcolor because of its ease of application.The entire trim was masked off and theedge of the masking tape was sealedwith R/S Perfect fiat satin P-15 in the

spray can. This method wili give a muchcleaner edge. Two light coats of colorwere sprayed on — just enough tocover, with the idea of keeping the sheenin the trim coior as close as possible tothe basic permagloss coior. A DJ Trim

Tape accent stripe was set, one tapewidth, back from the color trim to

complete the model trim.We powered our model with an OS .60

FSR swinging a 12/6 prop. A Kraft 13ounce tank was installed to insure

adequate air time. Our radio was thenew Royal Omega transmitter whichallowed us, quite easily, to mix rudderwith the ailerons, for coordinated turns.Ailerons were set to maximum throwwith differential added in the travel tohelp decrease the yaw in the rolls. Ourmodel weighed 10 pounds and wasbalanced according to pian.The initiai test flight was performed in

calm air. After a few taxi turns to check

out ground handling (really to settlenerves) the throttle was advancedslowly. The tail came up immediatelyand the Lazy Ace was airborne in lessthan 75". A slight amount of down trimwas required to hold level flight afterwhich a gentle right turn was executed tobring it back. A few stalls at a safe heightto get the "feel" and the Ace was wheellanded as smooth as silk. The next flightwas the true test. We really rung it out.Loops, inverted flight, stalled turns, roils,spins — just about anything we couldthink of, short of total destruction. TheLazy Ace did them all. And, as you mighthave guessed, with a smiggen of throttle

to page 158

NEW

NEW FLARED TIP Wheel Axle KitDisassemble those wheels, throw away those unsightly bolts, nuts,

locknuts, and install

NEW Flared Tip Wheel Axles.These sharp, distinctive, static free, professional axles will fit any

wheel capable of 3/16" hole with hub widths up to 1 inch.

Complete kit only $1.65 plus 35c postage/handling.Send name, address, ZIP, $2.00—cashiers check, money order,

(for personal checks allow 2 weeks to clear). Idaho residents add 3% sales tax.

Flared Tip Axle, P.O. Box 761, Idaho Falls, ID 83401Do it today, you'll be proud of your wheels for the first time.

Wheels

and blanknot included

156

REGULAR OR MICRO,FLITE PAKS

;d or kits

Litco flite paks or components can be purchased assembled or in kit form.Assembled units are pretuned and ready to use with transmitter specified below.All units use Deans connectors. Servos are supplied with extra female Deansconnector to simplify installation.

Lltco Systems has pioneered the concept of fully assembled fllte paks custommatched to various transmitters. Our servos are electrically adapted to match thetransmitter specified. There is no universal servo that operates properly with alltransmitters since throws and pulse spacing vary with each make. Please orderfrom table below.

PLEASE CIRCLE THE MAKE OF YOUR TRANSMITTER:

REGULAR COMPONENTS

KRAFT EK ROYAL FUTASA WORLD MRC RS ORBIT HEATH ACE UNICOM CANNON

{PRO LINE COMPLETE FLITE PAK ONLY) SANWA CIRRUS MICROAVIONICS KRAFT KP4A

MICRO COMPONENTS

r

SERVO• Double sided PC boards• Solid tantalum capacitors• Long life potentiometers• High quality servo motors• 4:0 lb. power, 0.5 sec transit• 8 mA drain• Fast, precise, high resolution• Gold plated Deans connectorsREGUUR Size: 1.5x1.45x.73

Wt. 1.2 oz.MICRO Size: 1.28x1.3x.6

Wt. 0.7 oz.

RECEIVER• Double sided PC boards• Double tuned front end• 1.5 iiV, AGO on 4 stages• Gold plated Deans connectors• High selectivity and rejection• 5 channels, 8 availableFREQUENCY: 72.08, 72.16, 72,24, 72.32,

72.40, 72,96, 75,640REGULAR Size; 1.9x1.7X.8 Wt. 1.5 0Z.MICRO Size: 1.75x1.14x1.0 Wt. 1.5 oz.

BAnERYREGULAR• 500 mAH, vibration resistant• Nylon D&R case• Gold plated Deans connectorsSize; 2.2x1.25x1.25 Wt. 4 oz,MICRO• 225 mAH, vibration resistant• Nylon D&R case• Gold plated Deans connectorsSize: .85x1.45x1.45 Wt. 2oz.

SWITCH HARNESSNoble high quality switchDeans gold plated connectorsNylon protective coverWt. 0.4 oz, (charging connectorto be supplied by user)

WRITE: We answer Inquiriesimmediately. We ship rapidlywhen paid by money order or cash.

GIFT CERTIFICATES $25.00 EACH

NEW 544 SERVOS!

After one year of research we are introducing the best servos ever produced regardless of price — the 544 Servo Line. Also In addition to our regular kits a newmicroservo kit (S5443K) Is now available.

These new servos and kits use a new highly advanced 544 AA IC offering Internally regulated power supply, dynamic braking, linear ramp timing and the needfor very few external components. This revolutionary new IC is complemented bythe most sophisticated PC board in the industry — double sided, plated Inside holes,reflowed In hot oil and manufactured of epoxy glass. This Inherent reliability andvibration resistance Is further enhanced by CTS metered deposition pots and the

NEW LOW PRICES!

best motors available. D&R mechanix production Is now electronically controlledfor increased precision. Finally a burn-In procedure further assures the highestreliability.

We have purchased a large volume of parts at low prices and we are passingthe savings on to you. The prices will hold as long as this supply of parts lasts.

Our flite pak approach has been Immensely popular and many modelers havepurchased their 4th or 5th flite pak. If you have not yet tried our approach now Isthe best time to do It and save. Flite pak prices are the sum of component pricesand all parts can be mixed.

NAME

ADDRESS ZIP CODE

QUANTITY CAT. NO.

55441

55442

85443

R2000

R2001

B1000

B1002

H1001

S5441K

S5442K

S5443kR2000K

H2010

82000

82000A

DESCRIPTION

Rotary D&R servo, assembled

Rotary Dunham servo, assembled

Rotary Dunham micro servo, assembled

Receiver regular, assembled Frequency-

Receiver micro, assembled Frequency.

Battery regular, assembled

Battery micro, assembled

Switch harness, assembled

Kitof S5441 servo

Kit of S5442 servo

Kit of S5443 servo

Kit of R2000 receiver Frequency.

5 male & 5 female Deans 3 pin connectors & assortment of wire

Trays for all regular servos 5 pcs.

Single snap on tray for all micro servos

544 IC

544 IC

544 IC

544 IC

544 IC

544 IC

PRICE

20,00

22.00

29,00

36,00

39.00

13.00

13.00

5.00

17.00

19,00

25.00

30.00

8.00

4.00

1,25

TOTAL

□ COD, Shipping, handling & insurance□ Cash, money order, bank draft, certified check, shipping, handling & insurance

On personal checks delay of up to 3 weeks. N.J. res. add 5% sales tax. Foreign orders add 10% of the total.

2.501.50

TOTAL

LitCQ Systems BOX 90, EAST HANOVER, NEW JERSEY 07936

INTRODUCING the Rolls Royce of ModelEngines. The most powerful and reliableRC 60 In the world is available now.

The NEW AmericanFitzpotrick 60 ABCSuper Schnuerle

DIRECT ORDER

The superengine$150Qo g

STRONGEST top end power for competition and the serious Sunday sport flyer.

SIMPLICITY Best possible first engine for uncomplicated - no tinkeringoperation, yet more horsepower than any .80 size engine.

BRUTE TORQUE for heavy or large Stand off and Precision Scale, BIpes,Prototype Pattern.

POWERHOUSE for all Prop Drive Reduction Units and Helicopters.

ADVANCED ABC No breaking in required. Each engine tested for super quick,starting and out of the box performance,

DEPENDABLE CARB. Technical superiority for smooth idle and reliable midrange.ULTRA PRECISION'Workmonship. Six years in design engineering develc^>ment

and field tesfing. Tolerances to miilionths for longest wear.RELIABLILITY Each engine selectively custom hand fit and assembled.

100% PARTS AVAILABILITY AND SERVICE shipped same day.FREE Beautiful S25.00 silencer included.

DIRECT ORDER ONLY $3.00 shipping and handling. California residentsadd 6% soles tax.

FITZPATRICK ENGINES 7342 Fulton Avenue,North Hollywood, California 91605Checks or M.O. payable to SWISSCRAR at above address.Completely manufactured in California, U.S.A.

JLAZY ACE

from page 156/43

she'll float around the sky with ease.If you want a big, fun, easy-to-fly

biplane, you won't go wrong with theLazy Ace. It isn't Stand-Off Scale so, tell'em it's a home-built. A I" = I" model of

the original — built by ChuckCunningham. □

TOLEDO '78

from page 42/40

scale 1:1 model of a P51D or B-17.With it all, the radio manufacturers are

building still smaller and lighter systems.

Kraft handed out quite a number of theirsub-miniature servo cases with lapel/tictac pins attached, promoting more thana few joking comments about themgetting into the jewelry business! For aprice, it is possible to install a completefull house system, including retracts inan .049 powered Half-A ship, withoutoverloading it!

The smaller Half-A ships were alsovery prominent — though It sure takes alot of them to cover the space of aQuarter Scale! The popularity of theselittle birds Is due to no small degree totheir convenient size. They are easy tobuild, comparatively inexpensive,readily stored and transported and, bestof all, a ball to fly.

R/C boats and cars both showed anincrease in numbers and interest thisyear. The boat craftsmen in particularshowed outstanding craftsmanship intheir scale and hydro ships. The displayturnout here was far beyondexpectations, and display space was ata premium.

For those interested in helicopters, atrip to the Perrysburg Holiday Inn for theflight demdnstrations was a must. BothAmerican R/C Helicopters (JohnSimone Jr.) and Dieter Schluterprovided spectacular flights, Simonewith the new flybarless Revolution II andSchluter with the Heli-Boy. Both madeamazing flights under very gusty 30mph+ conditions. Loops, rolls, split S's,Immelman turns, along with a fewmaneuvers yet to be named! Reallyspectacular!

If you missed the Weak SignalsTwenty Fourth Exposition, you missedmeeting a lot of new friends, seeing a lotof old friends, and, generally, just a greattime. The Weak Signals Club deservesthe thanks and appreciation of the entireR/C sport/hobby and industry for thetask that they have undertaken and sovery successfully accomplished. We, atRCM, take our hats off to the entiregroup in a salute of thanks for one more"Super Show".

Next year's Exposition will be theSilver Anniversary Edition—We hope tosee you there!! □

FLIGHT ASSURANCE

TECHNIQUES

from page 39/38

ship. If the ship is moving to the left, turnthe transmitter to the left (you shouldmove your body a little to the left as well).When the ship is going to the right, turnthe transmitter and body to the right.Now the hard one, when the ship iscoming at you, look at the ship over yourshoulder and point the transmitter awayfrom the ship.

If you follow the practice of pointingthe transmitter in the direction of theaircraft heading you will help yourselfstay oriented and manage to "slay in thepilot's seat." After practice, you will findthat only slight transmitter deflection willbe necessary. You may notice that eventhe experienced R/C pilot will use sometransmitter and body english when he'sin a tight spot. Remembering andapplying transmitter pointing may wellsave your aircraft.

Take-Off And LandingTake-offs and landings are the most

critical parts of flying. Both requirepractice. For rough fields, a hand launch

to page 160

158

Pattern and Standoff Scale Flyers

You are cordially invited to the Third Annual 1978

0 HITACHIR/C CLASSIC

AMA-Sanctioned

Radio Control Aerobatic Competitionto be held in California City, California, October 7 & 8

Sponsored by:

Hitachi Sales Corporation of AmericaHosted by:

Antelope Valley Tailwinds, Inc., Lancaster, California

Hitachi his and hers Color Television Sets for all 1st Place winners

Hitachi Microwave Ovens for all 2nd Place winners

Hitachi Home Entertainment Systems for all 3rd Place winnersHitachi Black and White Television Sets for all 4th Place winners

Hitachi AM-FM Digital Clock Radios for all 5th Place winners

Silver Trophies 1st through 5th Place courtesy of A& L Distributors,Great Western Cities, K&B Manufacturing, Lakeshore Inn, Pactra Industries.

■ Gifts for all contestants ■ AMA & FCC licenses required

■ Entries limited to 25 per class ■ Fantastic banquet Saturday night■ Camping OK—no facilities ■ USPJA judges

■ Pre-registration required ■ Party Friday night at Lakeshore Inn

■ Free RC Cola for contestants and families (courtesy of Royal Crown)

Located in beautiful California City,just 45 minutes north of Lancaster, California on the high desert.

Hitachi R/C ClassicEnclose $20.00 per event

C/O Dick Russ, C.D., RO. Box 32852, Okiahoma City, Oklahoma 73132

NAME AMA NO. FCC NO.

ADDRESS CITY STATE ZIP

CIRCLE EVENT: Novice Advanced Expert Masters S/0 Scale

Frequency; Pattern: MHz Scale MHz

IMPORTANT:

Pre-entry—No entries will be accepted after September 15,1978. When classes are full,earliest postmark determines acceptance.

Due to limited accommodations, be sure to make motel reservations early forHitachi R/C Classic at Lakeshore Inn,* 21330 Lakeshore Drive, California City, California, (714)373-4861

*Tell them it's lor the Hitachi R/C Classic, or you won't get in. Insist on Reservation Guarantee.

159

/RCModelermagazine

CALLS

%«

cc

HOT STUFF""A REVOLUTION IN

CONSTRUCTION TECHNIQUE"

cc

Model 'Airplane Newsmaga^'s

Dave Unstrumsays;

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Rying Modelsmagazine'sFrank Ttanosays about

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Dan RutherfordRL'

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HS-2 7GMBTL $1.95

(ONE 56.7 GRAM BTL)

6 INCHES OF Control Drop

APPLICATOR TUBING

COMPLETE INSTRUCTIONS

T-500 .50 PER PK

18 INCHES OF

CONTINUOUS TEFLONControl Drop

APPLICATOR TUBING

FOR ALL HOT STUFF

ADHESIVES 10 PKS/CD

PO BOX 1935, ARLETA. CA 91331 PHONE f213) 899-2301

NEW HOT STUFF

LfNEE^ EXCLUSIVE

FORMULA!!BLUE INSTANT

^ / ADHESIVE• 14.2 QRAMS (SINGLE BTL.)• 3 INCHES OF Control Drop

TEFLON APPUCATOR TUBING

• COMPLETE INSTRUCTIONS

HS-5 495^FLIGHT ASSURANCE

TECHNIQUES

from page 158/38

done properly has the advantage. If youhand launch, do not throw the ship intothe air, merely hold the ship parallel tothe ground and run into the wind. Let theship rise out of your hand. It's thatsimple. Always take-off and land into thewind. Check the wind direction before

you land or take-off.With regard to landing, position

yourself pretty much facing the landing

direction into the wind also point thetransmitter in the direction of landing.Look over your shoulder at the aircrafton approach: while easing back on thethrottle keep the wing level with theground. Go easy on the elevator, plan toland about one foot above the runway,the ship will settle these last few inchesby itself. Forthe first few landings, do notshoot for a specific spot, just keep thewing level and let it settle the last foot,later you can work on spot landings.

In addition to practicing thosetechniques identified above, thefollowing list when remembered andfollowed will add to your FlightAssurance.

Check List For Flight Assurance(1) Fully charge all batteries the night

before flying.(2) Make certain your frequency is

clear.

(3) Range check your radio beforeeach flying session.(4) Use a battery tester to check your

batteries before each flight.(5) Cycle your batteries periodically.(6) Check all control surface

movement prior to take-off (a hardlanding can strip a servo gear or loosena servo's mount),(7) Balance and use engine

manufacturer's recommended prop.(8) Have your radio serviced

alwan

QUARTZ PULSERLAMINATED HARDWOOD PROP CLOCKS

* 3D GOLD NUMERALS

* CORDLESS — Uses 2

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* FINEST USA QUARTZPULSER MOVEMENT.

SWEEP SECOND HAND.

MAX. 3 MINUTE

YEARLY ERROR.

★ MIRROR SMOOTH LACQUERED & WAXED FINISH★ 46" LAMINATED 4 PLY HARDWOOD★ GLOSSY RED STRIPED TIPS★ CORDLESS CLOCK, HANG ANYWHERE ★ GUARANTEED _ ^ DIAMETER

BY 3%" DEEP.

PROFESSIONAL CRAFTSMANSHIP — FUNCTIONAL & DIFFERENT

personalized with your AMA number — $3.50 additional, limit 7 numbers.AVAILABLE IN 4 MODELS — Natural Fir $89,50 Antique Dark Mahogany $109.50

Light Birch or Maple $149.50 Elegant Black Walnut $199.50Direct Only: J.A. ENTERPRISES. 1422 TESLA DRIVE. COLO. SPRINGS.. COLO. 80909

Colo. res. add3%salestax. Send money order or certified check lor fast service. Price subject to change. Shipped UPS freight

includes hang hardware

160

Photo of actua model built from kit

SPEC P CAT ONS

Price $9493

Wing span 49 in.Wing area 425 sq. In.Fuselage length 39 in.Weight 4V4 to AYa lbs.

^ .Wing loading at 4V4 lbs. = 23 oz./sq. ft.

• Engine .29 to .40 (Sport .35to .40 recommended)

.29foA0P0WERSport, stand-off scale, CDSSlBCBSee your local dealer first. Distributor and dealer inquiries invited. California residents add 6% sales tax.Foreign orders—U.S. currency on U.S. bank only.

House of Balsa

2814 East 56th Way,

Long Beach, California90805

periodically (at least once a year).(9) Have your radio serviced after a

crash (there may be a damaged crystalor wire connection).(10) Take-off and land into the wind

(check for wind shift priorto landing).(11) Stay in the pilot's seat by

following the aircraft heading with thetransmitter.

(12) Make it a point to learn and followthe rules for your field, club, AMA, FCC,and those for sportsman-like conduct.(13) Avoid being in a hurry, take your

time. It only takes a few seconds torecheck for a clear frequency and allthose necessary items that make forflying safely, often and with success. □

ROM TRAINER 5

from page 35/32

what to do when you get out to the field.And that's it. If this is your first R/C

model aircraft, we urge you to find thehelp of an experienced R/C pilot to helpyou out in your first flights. If you find thatthe aircraft needs right trim to fly straightunder power, then needs to bere-trimmed to neutral when the enginequits, add some right thrust — a little at a

time — by putting a slightly wedgeshaped piece of plywood behind theengine mount, increasing the right thrustuntil you correct this condition,

For detailed information about yourfirst flights, see RCM's Flight TrainingCourse, Volume One. Good flying. □

CAP'N DICKS COCKPIT

from page 30/29

introduce a spark model in the future."(Wouldn't that Damo be a beautiful millfor a 9' Cub? The ol' Cap n may have tostart whittl'n.)

ENGINEERING

Parts and Custom Parts for Your Helicopter

Complete parts inventory on Kavan JetRanger, Alouette II, Schluter Hell-Boy andHell-Baby.

HELICOPTER COMBO SPECIALS

List $338.00 — Special $255.00Jet Ranger and Rossi .60

List $565.00 — Special $465.00Schluter Hell-Boy-222 — $339.95

DISTRIBUTOR FORVARIANT RADIOS

Call for prices on Standardor Custom Variant

New From D.C. EngineeringThe Practical 40 Prop Orlve Unit

Check these features:1. Unique one piece, rugged lightweight construction.2. New Heavy Duty belt design, much stronger than cur

rent rubber belts.3. Compact, Installs In any airplane designed for a 60.4. Takes 14", 16", 18", 20" propS-5. Develops lOVi lbs. thrust on 16-5" prop.6. Lightweight — 11 ozs. less engine & prop: 24 ozs. with

engine & prop.7. Only $79.95.

All Orders Add S2.50 Postage & Handling, Except Kits • Ohio Residents Add 4% Tax

D.C. ENGINEERING 3S5 Geneva Ave., Tallmadge, Ohio 44278 (216) 633-2905

161

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B GLOW PLUGS: Standard line of GloBee glow plugs for larger models putmore sting in your engine! Spiral glowelement and leakproof seals are equal tothe hottest engines you can buy. Racing,Racing^, RC and Sport models availablein longs and shorts.C STINGER: Cordless, self-containedVa-A starter delivers over 100 starts on afull charge. No external battery or dangling cords! Rechargeable lead acid cells(included) will start the crankiest enginefrom .010 to .051 cid. Shroud protectsshaft and bearings. GloBee 4.5 VDCcharger recommended.

Team!D FIRE PLUG: Integrated glow plug starting system for optimum power. Rheostatcontrol matches current to weather, fueland plug choice. 0-10 amp ammeter indicates power output, also shows if plugis burned out or engine flooded. GloBee2.5 VDC charger recommended.E CHARGERS: Ask your model dealerabout special combination offers onmatching chargers—2.5 VDC for the FirePlug and 4,5 VDC for the Stinger—at bigsavings.

_ ...championshipproducts for the world ofmodelers from ...

DIVISION OF EMERSON ELECTRIC CO.6000 Fernview Ave., Cincmnati, Ohio 45212

KRAFT ORANGE COUNTY

DISTRIBUTORS

&

WARRANTY SERVICE

FOR ALL KRAFT B.C. SYSTEMS

Warranty Repairs OnTOWER TH-5 & TH-3 SYSTEMS

Repairs On K.S.E., K.G.L.And P.C.S. Systems

Expert Repair & factory PartsContact: George Killeen

Repair & Distributor Rep.

2B17 E. Lincoln Ave. • Anaheim, Ca. 92806 • Phone:630-5061

Anyhow, Dave sent a photo of theengine, and Invited me over to Midweston one of my layovers, to test run one.Incidentally, the Damo uses not morethan 5% oil in the fuel mixture — and has

been run, without damage, with no oil atall — the methanoi providing all thelubrication!

A! finished the props, and at midnightwe broke up. A! graciously presented mewith one of the 10/6's just out of themold. I'm going to test it on my H.P. .40powered Attacker.Time for some ZZZZ's, as I had an

early morning departure for Seattle. Onone of my layovers In Seattle I'm going tocall 'Dirty Dan', and see if he's taken upR/C! Ha!...

R/C Bradford, from Cap'n Dick'sCockpit. □

HOVER

from page 27

engine up to operating temperature.Now grit your teeth and open the throttlewide open and let it scream for 10 to 15seconds, then richen it till you hear itslow down, then start going in slowly, aclick at a time. Now once each clickstarts to increase rpm, keep going untilthe next click doesn't do anything tochange the rpm. Now back the needleout one click at a time until the enginejust slows down slightly. Stop right there,pull the throttle back to the idle position,and immediately set the low speedneedle for the desired idle. Do the lowspeed needle as soon as the high speedneedle has been adjusted while theengine Is at operating temperature.Once you have adjusted the engine thisway you can just more or less forget theengine as far as needle valveadjustments are concerned. If yourengine, after being properly adjusted,acts like it's too lean or seems to needadjusting, you probably have developeda dirt problem and that's what youshould start looking for and not adjustingthe needle. And. if you run good cleanfuel that Is filtered coming out of the canand filtered again going into the engine,you probably won't have any dirtproblems.

I practice what I preach and to prove itthe engine in my Jet Ranger hasn't had aneedle valve adjustment since last Julyand I fly all year round. This year I evenflew the bird in Germany and never haveI adjusted the needle valve nor have I feltthe need to.

This above adjustment method isapplicable to any carb except the Perrycarb which I've commented on before.

Well that's about all for this month.Hope to see you at one of the conteststhis summer. Until then, keep the stickforward. □

162

SOARING

from page 18

section of wing Is flat, no dihedral.

Mike Reagon and his Mirage. Noteelevator is hinged on right side only.

Head on of Mirage showing offsetvertical fin and flat wing centersection.

Scott Correa of Reedley College,dropped me a note to let me know that attimes we forget the student who livesaway from home and the modelingproblems that they are confronted with."School itself can, at times, be more

than one can stand, coupled with the factthat you live in a small town and theoutlook gets pretty morbid. Sometimes Iask myself how I stay sane here. Verysimply, my conscience answers as Iedge my way to the workbench. Youtake the scraps of wood pinned to yourdesk and work minor miracles with them.

If you live In a dorm, you'll soon find outwhat I mean. Between homework and

class, who has time to hack and slashthe balsa bits? We do. The poor kid wholives with our gliders. We really live withthem! I have a Windrifter under the bed,

to page 166

HOTHEI^

isT

The heat warningindicator!

Hot-Hed takes the guessworkout of engine settings andcowling air flow—A visibleheat indicator applied in dots.Hot-Hed changes color whenengine gets too hot.

$3.00 per half oz, bottle.{Comes with instructions)

FORMICATOR

Vacuum former for plastics—Easy to make yourown cowls, wheel pants, canopies, etc.—\Vork8with home oven and hose type vacuum cleaner.

$27.00 for complete kit{Instructions for assembly and use included)

PLASTIC —Bulk Packs

ABS Plastic Sheets for the Formicator—

All sheets 8V2" x 17"— Packs Only

PCS. PACK

THICKNESS PER PACK PRICE.020 (1/50") 30 $13.00.030 (1/32") 20 13.00.045 (3/64") 13 13.00.060 (1/16") 10 13.00.090(3/32") 6 13.00Assortment Pack (see below).. 13.00Assortnnent Pack contains! 6*.020/ 4-.030/ 3*.0452-.060/ and 1-.090 sheets. Any pack $12.00 whenordered with the Formicator. ALL ABS is white only.

Over 3]/z lbs. per pack

*ALL U.S. ORDERS SHIPPED

POSTPAID SAME DAY RECEIVED

Send self addressed stamped envelopefor further info on products

I

Trouble gettingit together?

Stik-it! is an adhesive that'smoldable, reusable, fuelproof—a million and one uses for fieldand bench. Won't let go untilyou want it to. Residue easilyremovable with lighter fluid.

' *;

$2.00 per two foot roll(.4 lifetime supply!)

HYDRALOCKSHydraulic unit converts airdriven retracts to hydraulicoperation. Adjustable to giverealistic retract speeds—stopsgear "sag-out" and landingcollapse. Use one for two wheelships, two for three wheeltype planes.

$8.00per unit—2 for $14.00{Complete instructions included)

Now...A PVA

you can

obtain!

One of the hardest things forthe hobbyist to find is PVA—(Polyvinyl Alcohol)—the onlysuitable mold release for fibre-glass and epoxy. A dry PVAthat is mixed with water,Kant-Stik is a superior moldrelease of highest quality.

$4.00 per one pint mix

{Complete instructionsfor mixing and use)

dDIRECT ONLY FROM:

Idaa Davaiopmani. Inc.P.O. Box 7399Nawark, Dalawara 197fti

CANADIANS

FOR

Fost, Efficient, Economical MAIL ORDER service of oilyour AEROMODELING Supplies,

WRITE

CALGARY HOBBY SUPPLY LIMITED

Box 3173, Stn. B., Coloary, Aiborta

DEALER INQUIRIES invited for Du-Bro, Sullivon,

Swonson, Fronkiln, K 4 B, Webra, Perfect Paint,Superstrong Covering, RDM Balsa, Kraft, Soorcraft.

Store Address: 3920 Edmonton Trail N.E.,Calgary, Alberta. Phone: 277-4664 7060 HOLLYWOOD BLVD., LOS ANGELES, CA 90028

163

-^Standard Hobby Supply★ P.O. BOX 113 ★ DEPT RC ★ MAHWAH, N.J. 07430 ★

SULLIVAHHl-TORK

STARTER

SALE

$22.50

Gel Battery . 12v,4 amp 16.99Charger - 12v 8.50

SPORTAVIA GLIDER

KjA ready to flyw/ 2 Ch. RADIO*

CESSNA CENTURION

ViA READY TO FLYw/ 2 Ch. RADIO*

I 7"^

$117.5070" Wing Spon*No. 8020 Set

36" Wing Span*No. 8020 Set $109.99

Plone & Engine (w/o rodio) 48.50 ' Plane & Engine (w/o radio) 40.99

PUDDLE JUMPER FLEDGLING

ONLY ONLY

$10.99 $14.99Length 18h"

Spon 40"Wing area275 sq. ins.

W/Cox Golden Bee .049 R/CW/Cox 2 chonnel &Golden Bee .049 R/C . . . .

$20.70

$89.95W/Cox T.D, .049 or .051W/Cox 2 channel &T.D. .049 or .051

$27,99

$94.95

/SA/VWA4 Channel

»8040

Complete with:• 4 servos

ni cods & charger

$175.95

3 Channel#8031

Features:

Single stick & 2 microservos {req. dry batteries)

$99.99

Includes many morepopulor lines ondallat low prices.

WRITE FOR OUR CATALOG LISTINGLatest edition sent

with every order.

Send no. 10 self-addressed

envelope with 244 in stampsor coins.

\■N

A REVOLUTION IN ADHESIVES

"HOT STUFF®"hez. 2.352 oz. 7.994 oz. 14.99Blue Line Vi oz. 2.99Extra tubing (pkg.) .50

POWERPANELS

7500 Mini Panel 11.997305 MK II Panel 14.997405 Duel Range Pone! . . . 17.507605 Series IV 24.50

COVERITEPER/MAGLOSS (38"X43")

White 6.39Red 6.39Blue 6.39Orange 6.39Yellow 6.39Olive Drab 6.39Aluminum 6,99Block 6.39Orange • Dayglow. . 6.99Yellow - Dayglow. . 6.99

SUPER COVERITE (38"X47")White 4.98Antique White . . . . 4.98

Balsorite (!6 pt.) 2.69Trim-it cutting tool 1.19

MODEL 271 KIT 29.99MODEL 281 KIT 35.99MODEL 381 KIT 39.99

MODEL 572 Mofo shop 59.95MODEL 21 9 Speed control. . 15.95MODEL 210 Dri l l press stand 15,95

ENGINES & MUFFLERSK & B

6525 61 R/C w/muffler6 5 35 61 R/C w/mufi & pump7861 35 R/C8011 40 R/C8360 40 R/C w/ pump . . . .8380 3.5cc plane w/moffler .

55.9971.4924.4945.9960.4942.99

FOX2160021698219002250022900236 00240002410024500246002609926199

15 R/C schneurle . . .15 R/C schneufle2BB19 R/C25 R/C29 R/C36 R/C40 R/C schneurle . . .40 R/C schneurle BB.45 R/C schneurle . . .45 R/C schneurle BB.Eagle (60 R/C)Hawk (6 0 R/C)

24.4736.9922.3722.3724.4724.4729.9942.9933.9942.9942.9953.99

FOX MUFFLERS90212 Up to .1590222 .19 to .3690232 AO90242 .15 schneurle90252 ,40 to .45 schneurle.90301 .15 • tuned muffler. .90302 .29 to .45-tuned mufi90303 AO - tuned muffler. .

4.766.367.964,766.36

12.7614.9618.71

O.S. MAX10 R/C schneurle w/muffler

. 15 R/C w/muffler.20 R/C w/muffler.25 R/C w/muffler.25 R/C schneurle w/muffler.30 R/C w/muffler.35 R/C w/mu/Her.40 R/C w/muffler.40 R/C schneurle w/muffler.60 R/C schneurle w/muffler-60 R/C schn, w/muf I & pump

24.7630.3631.9633.5646.3638.3639.9654.9965.9989.99

110.99

COX120 Golden Bee .049 9.30150 Block Widow .049 9.75170 Tee Dee ,049 14.65200 Tee Dee ,051 14.65210 Tee Dee .09 17.45COX W/THROTTLE120-1 Golden Bee .049 . . . . 10,45220-1 Medallion .15 19.95230-1 Medollion .09 15.95240-1 Medollion .049 13.25

TATONE MUFFLERScolumet" mufflers

EM.4 ,09 to .19.29 to .40.45 to .80For all current .049For Cox TD .051 ..

EM-5EM-6300.A300-8

5.807.407.704.95

-4.95

©No. 5082

Knife set w/ case(includes 3 knives ^ ^& osstd,. blades). $4,29

MILLER SPRAY SET

#2017

'12' hose■Shading brush kit'Spray gun w/pt. jars $44.99

TOP FLUESUPER MONOKOTE

OPAGUESClear, Red, Orange. YellowWhite, Aluminum, Sky Blue,Dark Blue, Black, Chrome

5.39

TRANSPARENTS 5.39Red, Orange, Yellow, Blue

FLATS 6.89Aircraft Aluminum, OliveDrab, Dove Gray

METALLICS 6.89Green, Blue, Plum Crazy

TRIM SHEETS:Solids 99Checker 1,35

HARDWARE & ACCESSORIES

AIRTRONICS504 standard launch pail ..... 24.50505 h«avy duty launch poll . . . 25.75

D.J.'S TAPE

1/16" 1.603/32" 2.151/8" 2.151/4" 2.95yellow,red,whi t«,black,gold,blue,green,orange, si Iver

DU BRO

157 friction brokejinkoge .160 prop boloncer161 tonk filter165 flex cable (20")191 kwlk-fill fuel pomp. . . .216 kwlk hinge slotter ....234 KjA steerable nose geor

2.652.651.041.207.691.751.80

per doz,R/C Short or Long 8.99

eo.

.92

CARL GOLDBERGHT-1 Hondi tote 11.75RG-2 Twin gear retracts .... 10.45RG-3 Tr|.gear retracts 17.45RPS.l Retract power system. . 20.99

COX HOBBIESCessna centurion»w/o R/C . . . 43.95replocement fuselage ^8.95replacement wing/tail 11,65eng.tank mountO49/051 #2440 3.90

ROBARTSuper fueler 1Incidence meter 10Super pumper (1/2A-.15) 11Super pumper (.15-.45) 14Super pumper (.60'.78) 17YlA Moin gear retracts 11VjA Tri^ear retracts 17

SONiC TROmCS220 fuel line-surgical sm.24"221 fuel line.surglcal Ig. 24"225 fuel line-si licon sm. 24"226 fuel line.silicon Ig, 24"231 seating tape l/8"x3/8x36"236 mounting tape l/8"x/2x36"250 Mark V elect pomp(2.6v) 91250 Mark V elect, pump(6-12v) 9251 Silicon line.pump to tank 1253 Filtered fuel can pick-up 1... Power panel-solia state 19

SULLIVANpush rod,36" semi-flex (2). , . 1push rod,36" flexible (2). ... 1push rod,36"cnblo. .030 1push rod,36"cable- ,058 .... 12 oz. bulb pump 994 oz, bulb pump 1.20Fuel afJapt.-qtj/jgaL Contoiner 2.70hi-tork for planes and cars . . 25.99hi-tork deluxe/oluminum hub . 27.99rubber replacement odapter . . .90aluminum drive cone 3.96

RHOM2pc, main gear system 55.992pc. main gear system-90*. . . 77.993pc. tri-gear system 77.99pressure gage 12.00

TATONEengine test stond w/ tank . . . 7.70glow plug stortor-nicod 5.40charger for above nicad 6.35engine prime w/fold top-1 oz„ 1.05nylon fuel tonk fil ler \r/cap. . 1.75

HOBART BRUSHESCamel Hair . Series #5171vr 50 Yi" 703/4" 1.10 1" 1.40

FOX GLOW PLUGS

MISCELLANEOUS

Glue knife 81Tock rag 55^oxy brushes 6/pkg 89Sandpaper.assorted .39Mylar sandpaper.assorted 79Razor blades-sgle edge 8/pkg. .69"T" pins -#16 (Ipz.) 1.49"T" pins - #20 {1 oz.) 1,29Foam rubber '4x8*12 69Foom rubber 1/3x8*12 .85Foam rubber 1 x8xl2 1.49#64 f^ubber bonds.'4 lb. box . . 1.25Gel battery - 12v, 4 amp . . . 16.99Charger for obove gel battery . 8.50Starting belt-500 mm dio. . . . 3.96Cheeter storting stick 1.07/2A mini starter (AFl) 12.70Coverite glaskote.1/3 pint 2.69Coverite glaskote thinner.1 pt. 2.30

ADHESIVES

AMBROID1 Vi oz. tube 544 oz. tube 99

TITEBOND4 oz. 988 oz. 1.4516 oz, (pint) 2.4532 oz. (quart) 3.60

HOBBYPOXY EPOXYFormula 1-15 min. work time . 1.05Formula 2-45 min, work time . 2.80Formula 4-5 min. work time . . 1.40Quick fix-5 min.foil pockettes 1.05

DEVCON EPOXY5 min. epoxy (2/3 oz.) 1.892 in 1 applicator tube 1.595 min. epoxy (9 oz. ) 3.89

★★★★★★★★★★★★★★★★★★★★★

OO-V/SA/VWARADIO CONTROL SYSTEMS

8020 2ch., 2 stk 69.998031 3ch., 1 stk 101.998033 3ch., 2 stl^3 servos* . 142.998040 4ch.r 185.998060 6 ch.* 220.99

* i ncludes nicads

SERVOSMicro 20.99 Std.,High Torque,Retroct. . 33.00

Tatotic-ENGINE

TEST STAND

$5.99

TOP

FLITE

2 SPEED ^HEAT GUN

$17.991

SEALECTOR

CUSTOM IRON

^ $15.60

BADGERNo.250-1

SPRAY GUN

$6.99

dumasBOAT KITS

1201 PT 109 25.451203 Coast Guard Life Boot. 36.351204 Tuna Clipper 30.151205 Trojan Cruiser 40.201207 Shel ly Foss 50.251210 Coost Gdi Uti lity Boot . 29.501211 Dauntless 39.55

1310 Pay'n Pak 25.451312 Atlas Von Lines U-76 . 33.501314 Atlas Van Lines U-1 . . 32.151315 Drag 'n F ly 20 Mork I I . 26.801421 Competition Deep Vee21 28.80

PROPEL - Small 2.24, Large 2.8E

RUNNING HARDWARE & ACC.

2310 For 1201-for elect, mtr. . . 10.402311 For 1203&OSfor dect.Titr. . 35.002312 For 1207-for elect, mtr. . . 38.502317 For 1315-for .21/3.5cc . . 45.502321 For l421.for .21 /3.5cc . . 30.802322 For 1310-for .21,/3.5cc . . 21.002328 For 1312orl4-for.21/a5cc 32.902329 For 1210-for elect, mtr. . . 30,102003 Speed Control-olect,mtr, . 14.402004 6 volt motor 16.992005 12 vqlt motor 16.99

MISC. ACCESSORIES6v, 4 ompere wet cell 6.996v, 4 ampere gel battery 1 1.996v, 7 ampere gel battery 14.99Re-charger Pock -6v 8.50Multi-chorger (metered) 14.99

*

**♦*

*

*

*

*

R/C KITS

ACEAMstar biplane 17.99High glider 13.99Whizord 13,29Dick's dream 8.99Alpho 13.99

ANDREWSA-ray 29.99H-rai- 26.99Aeromaster 49.99

AIRTRONICSSquare soar 17.45Q-tee ' 15.35Super questor 27.95Aqui la 48.95Gere Sport 27.95Olympic II 34.95

BRIDIlOtJTroiner 10 19.60110 Troiner 20 24.50120Troiner 40 36,85130 Troiner 60 40.95150 RGM Sportster 26.80160 15-500 26.80170 Tweedy Bird-19 26.80200 Quickest 200 17.50210 Quickest500 28.80220 Classic 40 36.85240 Super Kaos 40 37.50250 Super Kaos 60 46.90260 Kaos 44.90--- RCM Wing Jig 10.99

CARL GOLDBERGG15IIFalcon 56 MK II 26.59G16 Sr. Falcon 40.99G18 Jr. Folcon 10.49G23 Sky)ane42 11.99G27 Skylane 62 40.99

TOP FLITE

RC8 schoolmaster 9.99RCIO top dowg 14.99RCl 1 headmoster 17.85RC13S.E.5a 41.99RC15 contender 32.25RC16 P-51 mustong 40.69RC17 P.40 worhawk 41.99RC19 P-47 thunderbolt 55.99RC20 freshman trainer 31.50

ZINGER MAPLE PROPS

Dia,Pitch 6/pkg eo.7 4,5,6,7 5.19 .967-H! 4,5,6,7 5.19 .968 4,5,6,7 5.62 1.048-/j 4.5.6.7 5.62 1.049 4,5,6,7 5.6 2 1.0410 4,5,6,7 5.99 1.1211 5,6,6W,7,7W,7)^,8 6.91 1.28

TOP FLITE PROPS

Super Maple /doz ea.9*6 8.82 .8410x6 9.66 .92

11 x6,7,7/2,7'/4,8 10.92 1.0412x6 12.18 1.16

See our catalog listing for additionalZinger ond Top Flite props.

MIDWEST109 Li l Tri Squire 15.99122 Das Lil Stik 21.99125 Cessna Cardinal 19.99126 Super Chipmonk 19.99127Mach l 63.99128 Sweet Stik 26,99129 Cardinal Squire 57.991 30 Strikemoster 46.99132 Silent Squire 26.99134 Attocker 26.99

SIG MFG. CO.RC 3 Piper J-3 30.90RC 26 Clipped Wing Cub . . . 30.90RC 30 Citaorio 44,00RC 31 Kadet 27.50RC 32 Komander 30.90RC 34 Skybolt 48.75RC 35 Kouger 34.90RC 36 Klipper 16.40RC 37 Super Sport 15,50RC 38 Smith Mini Plane .... 37.90RC 39 Kavolier 30.90RC 40 Doublet I I 19.50RC 42 Kiwi 29.50RC 43 Colt 16.40

VK MODELSSopwith Comel 46.99Cherokee 46.99Cherokee Babe 25.99Nieuport "17" 46.99Fokker Triplone 46.99

SALE ENDS AUGUST 15, 1978(after which regular low prices wi ll resume)

PHONE ORDERS: 201 - 825 - 2212Men. • Fri. 10 a.m. to 4 p.m.

Sole prices on left page ond above star bordered area,supercede regular low prices in balance of ad or catalog.

PRICES SUBJECT TO CHANGE WITHOUT NOTICE

($10. min.JMust hove expirotion dote

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All Foreign - Payments by credit card, Internotionolor Postal Money Orders in U.S. currency only.

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Although the size has been reduced from our popular .60 series, the quality hasn't! The addition of a .20and .40 size series marks Royal's entrance into new dimensions in quality. For the modeler, this simply means anadded convenience and dollar-savings advantage of asmaller size without compromising hand-crafted workmanship or flyability. See the JUNIOR (.40 size) andMIDI (.20 size) series at your local dealer today.

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Super weave Thermalon is the Same fabric as ultragloss only it is lighter and thesurface Is unprepared. The finishing andfuel-proofing is left to the modeler. Thefabric will accept any dope, enamel, resin or polyurethane paint. As a seriousmodeler, you owe it to yourself to tryThermalon!

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SUNDAY FLIER

from page 166/16

So what does that tell you? Only this;low drag Is important, but the parasitedrag of the fuselage and empennage issecondary to the induced drag of thewing. Jerry Arana's "Grand Boss" wonthe prize forthe best design. The airfoil isa flat bottom section, and the top curve isthe same as the top of the Eppler 374.The flat bottom is curved up in the front inwhat is called a Phillip's entry. So whatsection is it, really? Who cares? It's fast— and that's what counts. Jerry did19.2 seconds for an average lap — thefastest recorded, for a course speed of45mph, which means that on thestraightaway he had to be doing over60 mph, and when added to thedownwind component of the wind, hewas coming in on the downwind turn atover 80 mph. But, in the fiy-off with Mike,the wind was light, and Mike's wing,using the straight Eppler 274 airfoil,stayed in the "drag bucket," while Jerryhad to go to a higher angle of attack, withthe resulting higher drag, and couldn'tquite keep up. And that's where theversatility of Mike's design paid off.Even so, the real story of this year's

races was in the quality of the flying. Forinstance, in one race between JerryArana and Rick Waiters, the leadchanged hands three times. Only oneslight bobble by Jerry, near the end ofthe race, made the difference. You can'tblow a single turn against Rick and win,because he just doesn't blow any!On Saturday, the wind was up and

good for racing even before the firstscheduled race. It got even better as theday went on until the last few heats of thefifth round. Then, the wind was blowing25 to 30, with gusts to 35, but parallel tothe hill. Very turbulent, with very little liftto depend on. I happened to be in thelast heat, and really blew the start badly— had to go back and re-start. As Icussed myself for the lousy start. BobAndris, who was pitting me, said, "Keepon going, they're having trouble too!" SoI did. And what happened? They gotcaught in the turbulence and thrown Intothe hill. All i had to do was stay up andfinish the course, and I would win. Andbelieve me, it was a real struggle. Butagain, the Eppler 374 section proveditself in light lift.On Sunday, the wind was again

perfect for flying at the start, and somegreat races were run. Then, during thelast round, the wind became very light,and everyone was taking out lead ballastso they could slay up. It almost becamea survival contest — who could finish the

course? But that's slope racing.Finally, as the last heats were being

flown, a light rain began to fall. When itbecame necessary to have a fly-off forFourth Place, between Bill Watson, CliffTanaka, and me, it looked like we'd have

168

to toss for it. But we went ahead and flew

anyway. Bob Andris, who had pitted mein all my previous races, turned the jobover to Rick Walters, for the simplereason that Bob wears glasses and therain would interfere with his vision. I had

the same problem {I jokingly told one ofthe guys that I'd wear my goggles overmy glasses so the rain wouldn't smearmy glasses: you should have seen thedouble take). In fact, during the fly-off, Icouldn't see my plane at the far end ofthe course, and Rick had to tell me whatto do. He was my "instrument panel."And a good one; I won the fly-off.We were all disappointed that Tony

Baker, England's premier designer ofslope racers, was unable to make thecontest. We had his entry, and hoped tocompete against him. For personalreasons he had to back out. However,his design, the "Ridge Racer" was inevidence, flown by Pat Page. But Pat raninto bad luck, with a couple of mid-airs,so the plane never really had a chance toshow its potential. Maybe Tony canmake it next year. But be ready for atough contest, Tony. These guys give noquarter — and that Includes me.And that's the story of the greatest

RCM Trophy Races that have been heldin the twelve years of their existence.Everyone present agreed to that — andthey all said - - - just like I did, "Wait untilnext year!"That is except for Rick Walters.The champ doesn't have to wait.And he earned it. □

ENGINE CLINIC

from page 15/10

12,400 (the highest rpm I ran theengine). The sharp drop off was morethan l ikely due to valve floatcommencing at the high rpm. Thesurprising thing was the high rpm atwhich the engine developed itsmaximum horsepower. I had expected itto be considerably lower in the8,000-10,000 range.

With an excess of three hours ofrunning time now on the engine, it wasre-checked for rpm with the break-inprop (14/6 Top Flite) to see if there hadbeen any further gain in rpm over the firstand second hour checks. The rpm wasthe same.

With all of the power tests out of theway. the engine was checked for fueleconomy. Three 4 ounce tanks of fuelwere run through the engine for anaverage time of 6 minutes on 4 ouncesusing the 16/6 propeller. The engine waspeaked and then backed off on the richside until there was no audible sparkknock and allowed to run the tank outwith no further change in the needlesetting.

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It would have been quite interesting tohave been able to run the engine withspark ignition rather than glow, wherethe ignition timing could be controlled. Iwould almost bet that even more powercould have been had from the enginedue to the elimination of spark knock atiean settings. Mr. Wahl says that amagneto ignition wiil be avaiiabie for theengine and I imagine the four tappedscrew holes directly behind the propellerdrive washer are for mounting themagneto.As my final test, I decided to see how

the engine would perform on no oil fuel.One 16 ounce tank of straight methanolwith 5% nitromethane was run throughthe engine. Although power was down afew hundred rpm, no adverse resultsoccurred -- - frankly, much to mysurprise. I was expecting the engine toseize any minute. During previous tests ihad checked the cylinder headtemperature and found this to be running

in the 340°-360° range, depending onpropeller size. Using the no oil fuel, thecylinder head temperature rose slightlyto 380°. Normal cylinder headtemperature for a .60 size two strokeengine is in the 360°-390° range soeverything was perfectly normal.However, the slight drop in rpm and risein temperature would indicate that someoil in the fuel is desirable — maybe ourmethanol isn't as "oily" as Swedishmethanol. Even so, to run 16 ounces offuel through an engine with no oil issomething you wouldn't dare do with anyof your two stroke model engines. I thinkone of the reasons the Damo can do this

is due to a certain amount of fuel leakagepast the rings into the crankcase. Wifhno bypass action between thecrankcase and combustion chamber, asin a two stroke engine, this fuel remainsin the crankcase lubricating the internalparts. In fact, one of the reasons for themanufacturers recommending the use

of no more than 5% oil in the fuel is toprevent excessive oil from accumulatingin the crankcase causing erratic runningand poor performance. Themanufacturers are very emphatic aboutthis point.Many of you are certainly going to

realize that the maximum horsepower of1.2 developed by the Damo is notexactly earth shattering with manypresent day .60's exceeding this figure.However, it must be remembered thatyour .60's develop higher horsepower atconsiderably higher rpm turning a muchsmaller propeller — a prop too small touse on an aircraft of any size. Fourstroke engines favor larger propellers atslower rpm.To see how the Damo would compare

with a strong running .60 on the sameprop sizes, my final test was to run myown Custom K & B .61 with Perry pumpand PDP modification. This is the same

set-up that Peter Chinn tested some

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VORTAC MFG. CO.P.O. BOX 469 OAK LAWN. ILL. 60453

170

•Bushwackep

Wing Span 68.75 in.Wing Area 555 sq. in.Power 15 to .19 cu. in.

Weight 3 lbs (.15 cu. in. dry)

$44.95 Without Accessories$52.95 With AccessoriesA transition trainer for the modeler

who is tired of slow, boxy trainers, orwho Is proficient with sailplanes andwants to try power. Ailerons providethe extra control that make R/Cpower flying more fun. Bushwacker iscapable of performing the full stuntpattern, yet she will "turn on a dime"and land like a feather. If there is no

runway, you can remove the landinggear in 15 seconds and hand launchthe plane. The kit is available in twoversions — with and without accessor

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ARK'S OPELS

P.O. Box 2134, Escondido, Calif. 92025

months back in his engine reviews andfound to equal or exceed manySchnuerle ported engines.The Custom K & B .61 turned the 14/6

Top Flite 9,500 and the 16/6 Y&O8,000 — almost the same as the Damoturned them. However, the 18/6 Zingerwas another story. The .61 would onlyturn this 4,900 — 1000 slower than theDamo.

Now, although a good .60 will turn thesame rpm in the 14/6 and 16/6 propellersizes as the Damo, there is one factorthat must not be overlooked. Two stroke

engines inherently develop their powerat higher rpm and do not like to belugged down much below 10,000. A twostroke single cylinder engine is workingits guts out trying to turn a 14/6 or 16/6prop. The Damo four stroke is doing sowith a minimum of effort. This is

indicated by the low cylinder headoperating temperature and its ability torun with very low oil content fuel.

With all of our running tests out of theway, the engine was disassembled forphotographs. I would like to give credit tomy youngest daughter Karen whohandled all of the photography,developing, and printing of the picturesused with this article. Karen is a highschool senior and teacher's aid for the

photography class. All the pictures yousee were taken after over three hours of

running time including almost 25minutes of running time on no oil fuel.You will note there is hardly anydetectable evidence of the enginehaving even been run. The shinycylinder walls which probably will notshow up in the magazine print being theonly indication of running.As mentioned at the beginning of this

article the Damo 218 is of qualifyconstruction throughout and built withthe precision of a Swiss watch. Thereare not shortcomings or substitutions forquality to cut production cost that youcommonly find in many engines today.

Design-wise the engine has manyunusual design features. Thecrankshaft, in particular, is very unique.When manufacturing a twin cylinderengine, there are several approachesthat manufacturers have taken over the

years. Many have used a one piececrankshaft and split the rods the sameas in automotive engines. Others have

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Pat. No. 3.891.169

. Free from '

vibration ^

Ed^i

Dealers

Welcome

. PRICE INCLUDES: Mounting base|i Long Jaws for .40 thru .80 cubic

inch enginesShort Jaws for .15 thru .35 cubic

inch enginesAll hardware. Full instructionsPlus: mount your engine in any one

of 360 different positions.

Catalog of Our Complete Line7 ! ENTERPRISES INC./17 Speer Place/ Nutley, N.J. 07110/ (201)661-2310

CUSTOM TUNED ENGINES

COMPETmON ACCESSORIES(Cox .049/.051 Specialists)For catalog, send 13c stamp to:Kustom Krattsmanship (catalog)

Box 2699, Laguna Hills, CA 92653(714) 830-5162

BUILDING A SCALE MODEL?Need airplane photos for details, markings, reference,documentation? Or to make the task easier? We are themajor source for such photos, In many cases the onlysource. Send 1st class stamp for free catalog.

COLLECT-AIR PHOTOS

P.O. Box 14234 (Dept. RC)Milwaukee, Wisconsin 53214

DEALER'S COST +Send me your name, address andzip code and I will show you how

to buy modeling supplies atDealer's Cost +

RC BUYERS CLUB3804 W. 81st St., Chicago. III. 60852

IN NEW HAMPSHIRE

Your complete R/C Center is Fitts Ptioto and HobbyShop. Kings Hyway Plaza, Route 108, Stralham.N H, (603) 778-8802. Open weekdays 10-9. Sun

days 1 -6. Kraft / MRC / EK / Enya i OS Max / Fox.Kits and accessories.

We fly ourselves.

WINNING Mode/ & Hobby Supplies

Main Branch: 2 Austin Avenue, PKowloon, H.K.

Tel: K-684ie4, K-691026Cable: 5625, Hong Kong

★ ★ * ★ ★

RC Planes, Copters, Gyrccopters, Motor Gild- . Iers, Soarers, Scale Planes, Pylon Racers, ARF& RTF Models.

•< H.K. Branch: 34-36, Ylk Yam St. B1.Happy Valley, Hong Kong.

Tel: H-753493

*■*•*★ *

RC Boats, Yachts, Cars, Buggies, Tanks, Rockets, Radios, Parts, Etc.

Mall Order Service. Price List — US $1.00 (by Air).10 AM- 7 PM Sun. & Holidays closed.

used a center disc and pressed the endsof the crank pins into this. This meansslipping the rods on the pins prior topressing the unit together. Onceassembled, the rods cannot be replaced(without great difficulty). Sten Dal chosea method I have not seen in a model

engine before. A center disc is used Intowhich the ends of the crank pins slip.The ends of the crank pins have "flats"milled on them. The disc is, in turn,drilled for two pieces of round andhardened drill rod with wedge shapedends. These wedges are retained byAllen head set screws. With the rods on

the crank pins and the crank pins, in turn,slipped into the disc, the set screws aretightened creating a one piece unit.Extreme precision is used milling theflats, etc., so that tightening the setscrews aligns the bearing journals andcrank pins perfectly. The crankshaft,itself, is supported by no less than fourball iDearings — the front portion in theconventional manner with a ball bearingat each end, and the short rear portionby two ball bearings back to back. Asmall gear attaches to the end of the rearsection to, in turn, drive the larger camshaft gear (see photo). The gear is"pinned" in place and retained by a largescrew with left hand threads.

The crankshaft directly drives the camshaft which is supported at both ends bycaged needle bearings. For those notfamiliar with the term caged, there aretwo types of needle bearings — cagedand uncaged. Caged bearings use aspacer to separate the individualneedles. Uncaged bearings do not use aspacer and the individual needles rubagainst each other. This means that thefront side of one needle is rubbingagainst the back side of anotherwhich isactually doubling the surface speed ofthe bearing needles. Needless to say,this increases friction, lubricationrequirements, and hinders high speedoperation. So, a caged needle bearing isfar superior to one that is uncaged —

to page 174

7-CHANNELSUPER-PRO

1S7B Medet

254'

SET CONTAINS:4 Setvos.RecliargeableGatieries, FreiiuancjrFill, Bittefjr Ctinier.Servo Triys. ServoAccessoties, PLUSONE YEAR FACTORY

WARRANTY!

5-CHANNELCHAMPION

197B Model

229'U.R.C. S CHANNELSYSTEM snSW.tl< i s.

RC 2 CHANNELSYSTEM ((112W,,l. 2 5.

Co. SANWA3 CHANNELSYSTEM

FAMOUS BRANOB CHANNELR C SYSTEM

I b 4 So,.o..R«h„,o.I eblrbsMrMek, «'«d

■™« SALEf# *209^^

on,.oo4 CHANNEL1 Deluie SYSTEM

9 I W' jV,0,1 clod T.onso...

^194®®SUPER-MINI4 CHANNEL

SYSTEM

SALE

259®®

fS'™ 5895 .60 Engine R«g. $79,95

CLIPPED WINC CUB^^Si^^Fat .19 -a .35 Erg,"®

Reg1 sJ/539.95

Scale R'C V 1PIPER CUB J4 Avao Per.19-.35 Engine71*Wing9en.Ree.S39.9^ V 1

Sterling F4U-1 CORSAIR A

sL.e^20®®

TAI-JET 3SB R C

iQss Wheels included in bit. 1 7

MARTINI PORSCHE C/\88F®r-.ord,Revert*,fiighiend Lett SleeringfL e t» boiter.et)

PORSCHE 934 TURGO RSR

eu:,',:At;c. AT^s Farword.fievetto.Righi Wend Left tte«r>ng.|Lett bniieriet)

PWFORO1 10 Seal*

Cleclrle ftcce car bit.' ForvrQrd.Rsverte.Rr.jhtand Lefl tirenngdett LaitrrirO

CORVETTE StyleSALE^ Jfcy46®®^^JElect*.c R C «"<r Cm LetsWith Mulli Camral Syttrm. Batter,e<

LEOPARD A-dTANK kit

1 16 Se6l«lf>elwd

SHERMANTANK kit ) 16

• Sccle.UcI 'dElwcrK »

Mo'Q

12495 Fo, 2 Cho„-.l R,C.

(RcJiot7V)5«dJnioool)174°°a98

BRAND ^NAMESSAU/AfSS

READY 10 FLYPIPER I—CHEROKEE^ v.ik j channel -111. ENVA .dO RADIO S. 4 Sococ. All HIcod Lotlorioc endLoll loot!no R 'C Choroo'.Reodr-10-Fl,.FIBERGLASS Mddol t

L«>* KAUlU "ITI KAUlU "dtn KAUIW WC«»

271®® 489®® 464®® 243®®

CESSNA niCARD NAL

55* WingMj

o.s.ENGINES0 Mufllers

Flgr with Electric Motors. Systems Include BatteryReg. SALE

I o: :3.os 10.00Act.oOS 41.95 3S.S5

I 10 79.95 59.95I 15 99.95 74.95. 29 109 99 83.95

Airplines lorASTRO MOTORS

SUPER HELI-BABYCollodl.'O

>r.40

TRI'STAR Ow-Se®46*R9IQ'4 ^0

SHaVk 60 Dor B.® f®F .60 ErvgtrifrSUPER BOY Sthi^vuFc .6C Sna.rt

JET RANGER Ko«gr60-Roi4r.F». frO E

R C HELICOPTERS

olouelle a.159®5]9995

22295

18855259953099530995

RADIOCONTROLCOMBO

PIPER SUPER CRUISER

PLUSSINGLE CHANNEL

PULSE SYSTEM

Betlwry Bo i orsd

11PLUS

.049 Engine

R C GLIDERS

HAWKkll

LEG OKA R100

LEGIOHAIR 140IdO-'V.'.j.po™

MAESTRO Mklllkgtpo'9

GLASS Filled NYLON PfopellersDiem. Pitch?• 5,6* 65 1.49a- 6* 75 1.749- 6- 95 J.22(0* 6* I. J5 2.66

1.35 3 CO

RegiOS .10 PSR R C ».95OS . 15 fi/C 37.9SOS .30 R''C .OS ,25 «'C ...OS .X R C ...OS 35 R9 C ...OS .40 R C .

39.95 .41.95 .47.95 .49.95 .71 SO .

OS .45 R CS<Hr>«wl« 99.9S .OS .60 R CS<Kn^r(« 119,95 .OS .X WoFik«l ID9.9S .

K&B.21 A095)ARd07

SALE19 R C 33.95

K&B.61 Pyme. 74.95

SLK .IS R CENGINE

95 4®%-UtiNler SdiSS

cm

12mn.

■ MEBRAENGINES

SALER'C Marine

K.b.s .40 Block H.od 7195 .. B7.95Ko1.ro .dO Block HeoJ 86.95 .. 99.95Wolrro .40 5p<4d 81.95 .. 94.95Webro .61 Soood 104.95 .138.95W.bro .90 5o.od . ... H4.95 ..

PEANUT DUNIBUGGY Kll

63®® Wilh Dvllt.ir>Stoelrr.Oetigoed 'or .09 £

Long ih

Assoeiated 1< 6 ScaleRCl Car Kit only

69®®

.HEAT 1095GUN

SEALING ^4*3

COMBO: Heat Gun and akaqbSealing lion, BOTH lor 32"°

A EMMA C. BERRY

\ Kii"b?Im*/vj||» SALE A^®5 Scale Included "VW

DARWIN 999

N^^^ALEFg, Uulti ckerr.l.PI,- 0195 ..... • r.r.i ^ ■

CAPRI R'CCabin CfuisefPre l,ni»hed

A

L.-5,b 33- 50^5 Hmghl; lO'i- .CompUtoE# 7with 2 Electric Malors 6 drlwc wtnl.

Si..i,.b U.S.S.MISSOURI X,I 811ML.-a.h, 55'i-Fg.

UlSSOURI Flitigg 1 Jt QCS.r. 115 P.«...

Dumas BoatsD.V. 10 MeKogonyD.V.30 Ply«<«ed ..D.V.40 PlyNMoed ..D.V,60 Plr»9ed ..D.V.20 FibcrgletBD.V, 40 f'b®rgU«BD.V.iO PiB®tgi«*«

Res. SALEla* n.oo 8.2S24* 30.00 22.5032* 47,00 34.9538' 65.00 46.9924 * 64.00 46.9932 * 79.00 58.9938' 88.00 6199SALE Prices

Siete MecV Beats khLil NerrWed X'.20 .. 39.95 44.75NerthwJnd 32*40 60... 39.95 46.88Lil LigKtniag X',31 eyiboaed 26.99Lil Liahinlng X*P<b®rg1«t« 73.996MsK»eKb«r 30* 39 95 41.99Lil DelpKift »• 37.9S 37.95Mini Detphkn 32*,09..1S >*>« 21.44Mighty Oelpbin 36'.., 40.99 37.49Srr®9kerD®®pV«« Clou 48.99 61.99

POWER PACERend Ct<'

DAE POWER PANELWi th M®»®f. Hai Totfnfl

p:rrpi»,.i4®®, HEAVY DUTY 12 Volt

14®5

'Wet CellETCELL CHARGER... SI.SS

ZAP Adhesive ^'Clgle.Bsnd.rd... Hoc. .. A

79

SINGLE CHANNEL PULSESystem., Trir..r>.ri». n.c.i-c-..Ik T.

■T]^^ L.jk. I

M\Q 4«i®mbl®d ■ M

95

RHOM RETRACTS Twe Gear

79

Syst

Three G

em

58®®SALE

earSystem.

95

HI-TORKEHG HE

STARTER

Standard

BOOKSAd.4f.e4d Rodio Cokl'sl 4.V58e»i« e4 R C Mervel 4.90E'etyiKing yew St«wld Knev Abow*

R C Flying 19SFl ighi Treifling Cewt*® lO.OOFlight Treicing Cewtu (I lO.OOFlying Medel >^®lieepr®r* 4.95Foam Wing* IMFor Whet l4*e Werih 2.50Fet Whet h't WeriK (I 4.95Per Whet h's WotiK m 6.9SFor Whet h*s Worth IV 6,95Lorvdwoiling ler R/C Modal« ... 4.95M®d®l C(v Reetng 4.50Med®l C» Reeing by R C 4.50M«del Racing Tacht Canatruct. 5.00li*«d®l Redia Canitel 4.95Haw Claaa Fibre Bull S.OCRodie Cgr^trgl for Med®l Te<hi ..4.35Rodie Central Manwel 2nd Edit 4.95Rodie Central Kelicepter Uad®l 10.00Rodi® Central HondbMb 6.95Redie Control For Medeltera .. 5.45Redig Centtel Per Medel Beeta 4.95Rodie Centiel Far Medel Cora ■ 3.95Rodie Central Manwal 4.9SRadio Control For Madde 6.95RodJe Central Primei 5.95Rodie Central Owid* (8®tchar) 11,9$R c From the Orownd Up 2SR C Handbook Glidtri-'Sailpla. 4.9$R C HHicopirr <Dr(di«) 10.25R M. Prepo Boab 7.95ScbleinHand ISOStmpio Medd Yechi 2.75Simple Single Cherveel R/C .... S.4SSooting Book 11.95

•d R/C .The R/C EngineThe R/C Engine IIThe Model EngineBrainrvert Warbthe^Otriling MachineShying MochktteHew la Werb Sheet MetoUWrlding end Cutting

4 4.95. J9S. 4.95. 395. 8.70

. 10.95

. 8.65

.. 4.35. 4.35

6. SOSee our A.H.C. Catalog tor Hundreds

Aeramedello' Annual 1977-78 .. 8.50AeremedeHe* Annual 1976-77 .. 6 50All Anewt Model AirereIt 6.50Baiic Aeremedelling 8.50Beet Modelling 4 3$Cellectore Guide te Model Aera

Enginea 11.39Central Line Manual 6.85Flying 5eole MedeU 4 95Flying & Imprgwing 5c ale Model

Aliplenot 6.9SKNOW YOUR MATERIALS

AdKeeivet 2.89Bdaa 2.B9Oeping end Finlahirtg 2.B9H»dsuada 2.89MetoU 159Ploatio 189P|yan»ed» i60HwrdbMli of Model PIvsea. Cere

Beau 3.50Making G1e»» Fibre Baeta 4.3SMaking fiWdel Ship Fillings ... 3.60Mar^ewerod Flight* 8.SOModel Boat Prapeller* 1.45Per«er Mad«l Boots 4.95Solerabo Book el BeUe Models 7.25Eleciilc Round ihe Pole Flying S.OQ1935-36 2eie Year Be®b 1.751937 Zeii; Yeer Book 1751938 Zeie Ytor Beak AOO1951-52 Zeic Yeer Beeb 4.751953 Zeic Ye« Baak 1251955-56 Zoic Ye* BaaV AOOI957-58 Zeic Tee* Ba«k 4.2S>959.61 Zaic Yea* Beob 5,001964.65 Zoic Yee* Book 5.00Medel Aeren. Mode Petnless .. 125Model Glider Design 4.35Plw>S Handbaeb. Airplanes (1L. 1.45Plant Her«dbeek.Car« (21 1.4$Plans Hendbeeh.Lae»*(3) .... 1.45Plans Kendbeeb-R/C 141 1.45Ametewr Workshop 1100Sharpening Smell Tools 4.35Ametewr Lothe 11.40Kna. Yaur Lethe 7.25Using The Smdl Lethe 160Metol Twining Lothes 7.25How »a Mobe Madel AitctoHs .. S.9Sof Books,we con also Supply

Top Quality R CLoagGLD PLUGS

j 1', .. 2 V.l.,. Idl.bdr. By a lomOuS

•10 FOR,:95

SMOKE TRAILSHen Ei^l

12 FOR 14®®

24®®Sr27®®

. DEEP VEE 10la-L.nc R.a in.on

SPEED

COMBOWith COX .0»H'X Engine nilli H27 Hardware

110.00

>,Glo Bee Fire Plug^ Battery h, om.

ifgDSCharger.. S1.99

^^erdcr form ^ w Owont.

Amelea's HOBBY CENTER Inc.149 West 22nd StreetNew Yetfc, N.Y. lOOU

MEMO TIMER

R,C 11,

[OmuOC»mDBEL5)

176 PAGE

MODEL

AIRPLANE

CATALOG

COMPLETE SETCATALOGS

, Nemo ottd Descriptten al Itefo (Model Ha. If Kn

LETINS

HE Page MODEL 150AIRPLANE Catalog I : R.ilra.d Catsl.9 ... I.SO

. I bbid.l Shi.. (Wg.d H.ll) .. I.so; J Fla.l.c Hcd.U. Dlwlkrr .. .SO( I null.rio (t? 1...,..) I.SO

AdU S<M.. T.HANDLING FEE (All 0/J«..il 11.00

itt;

r-on ORDERS ®®"accepteo Centineniei U.S.AWRITE ar PHONE

PHOHEI213) 675.8922ESTABLISHED 1931

RUSHORDER TO:

.i wndaf $5.00 •»25«_|ar_Pa8roj^4^«<kin£ WE PAY POSTAGE I'i!/;

Visit our Store Iw UnadVertised Specials TOTALFrii"Mri>ii.|i1d.| U.S.A.: APO. FPo. *.«««.' c.^i. Ch.ci». m..., o.v.. lillliMlllll.lllQ.i F...!.. ...i.d U.S. Siof-v.. Pbt>.o. Fold b. o.d...... SSOO l.i.ra'-.b.'.i.d)- e.", NUST PAT SI.00 HANDLING FEE.Olhei Countries; Add isn .1 'tid .,d» p.»i)«.. k. -<11 ...dii ....ps,-..

□I Pbcki.|.H.ndli<: SI.00I SI.00Vl.

All Prices are Subject lo Increase Wllhoul Notice .^ PRINT NAME and ADDRESS In MARGIN BELOW, 9

r Sietl

T-778

Shop by Mail^^at fiLLlEO HDBBIE^

SAVE!COMBINATION

OFFER

BRIDI RCM

.40 TRAINER52" span all-;balsa kit

com

K & B .40

BOTH R/C ENGINEONLY #8011

«7I.so

SAVE!MONOKOTE COVERING

Opaques S5.25 per rollTransparents . .S5.25 per rollMetalics $5.95 per roll' minimum order, 3 rolls

SULLIVAN

HT-1 STARTER

TOP FLITE

MONOCOTE IRON

# MS-2 only . .

si3.«

KRAFT KP-2A

2 channel, singlestick system

includes; KPT-2Atransmitter,KPR-2A receiver,

-- ''2 servos, batteryholders, switch harness

'batteries(dry)not included

KRAFT

KP-4A

4 channel, two

stick system includes; KPT-4A

transmitter,

KPR-4A receiver, 4 servos,

rechargeable battery packs,wall transformer for built-in

charging circuitry, switchharness. 2 servo trays,

SAVE! batteriesIfomplete system 93

, . only

FREE! RC MODELER BELT BUCKLEany order of SlOO.OOor more, you get this

solid pewter RC Modeler Belt Buckle, crafted espec-iaily for Allied Hobbies by Adina Silversmiths.

retail value

Saving Specials areavailable at these

convenient ALLIED

HOBBIES stores , , ,6607 Rtsrng Sun Ave/PhiladelpHia.PA 19m • Ardmore West/Ardmore.

PA • Colonial Mall/Harrisburg. PA •Ecbelon Mall/Voorhees Twnsp. NJ •Quakerbndge Mall/Lawrencevdle.NJ • Village Mall/Horsham. PA • The

Galiery'Phnadelphia. PA • King olPrussia Plaza/Kir^g ol Prussia. PA •Oxford Valley l^lall/Langhorne, PA ♦Monlgomery Mall/North Wales. PA •Park City Center/Lancaster. PA • Plymouth Ivleeting Mall/Plymouth Meeting. PA • Bazaar Shopping Center'Clifton tHgtS. PA • Country CluOPl.iza/Wtllingboro. NJ ♦ North MallHanover. PA

July {prices valid only thru July 31, 1978)SAVING SPECIALS

Saving Specials available tttru July 31st, over thecounter, at all ALLIED HOBBIES stores... Stop in and

Save!... out of our marketing area?... Phone or Writefor FAST service!

• Minimum order $10.00

• Add $2.50 for postage and handling.

• Pa. residents add 6% sales tax.

• Include check or Money Order with order.

• Visa, Bankamericard or Mastercharge accepted.

• No COO'S or collect calls

please.

• Supplies limited ... offers valid

only while supplies last.

RLLIED HDBBkES6607 RISING SUN AVENUE

PHILADELPHIA, PA. 19111

(215-PI5-5777

ENGINE CLINIC

from page 172/10

the main application for uncaged needlebearings being low speed applications.However, many model manufacturershave used uncaged bearings forcon-rods, etc., over the years. One of themost notable being the famous Dooling.61 of the late 40's.

The cam shaft itself is enclosed in

what might be considered a pleniumchamber, or Intake area, that feeds thetwo tubes leading to the engines intakevalves. This means that the incomingfuel mixture passes over the cam shafton its way from the carburetor to theIntake valves and combustion chamber

lubricating the cam bearings and lobes.One of the highest points of wear in anyfour stroke engine is the cam lobes andfollowers. Sten Dal chose another

unique method of assuring amplelubrication at this high wear point.

Hardened steel cam followers ride on

the cam shaft lobes actuating thehardened steel pushrods that, in turn,operate the valves. This Is one pointwhere lubrication is recommended — a

small bit of grease at both ends of thepushrods every 30 minutes of runningtime. I doubt very much if fellowspurchasing the engine will remember todo this at the recommended frequencyas it amounts to about every two or threeflights. I ran the engine three hours plusduring testing with only the initial greaseapplied by the factory and at the end ofthis time there was still ample grease Inthe small pushrod sockets,The valves are hardened steel and the

valve guides and seats, are bronze. Therocker arms are hardened steel. The

rocker arms attach to the head by meansof a hardened steel shaft that slipsthrough a machined post that is part ofthe head. As will be noted from thephotograph of the heads, there is aconsiderable amount of work involved in

a

174

the manufacture of just this part alone. Infact, the head alone with Its valvemechanism has more work Involvedthan many of your complete small boreengines.The engine pistons and rings are quite

conventional being machined fromaluminum and cast iron respectively: thepiston being what appears to be apermanent mold casting. No bushingsare used In the piston as the wrist pin Is apress fit and retained by snap rings ateach end. The connecting rod Is also apermanent mold casting and usescaged needle bearings at both ends.

The cylinder liners are made ofhardened steel and slip into machinedaluminum fin muffs. Rather than beingretained by long screws that have a badtendency to stretch, steel studs are used(this copying full size competition enginepractice). The heads on your automobileengine are retained by bolts, however,high performance engines used for dragracing, Indianapolis, etc., use the stud

method. Again, Sten Lars chose the bestmethod. Threaded steel collars. In turn,

screw over the ends of the cylinder studssecuring the heads and cylinders to thecrankcase.

I think that pretty much wraps upconstruction features of the engine. Theaccompanying photographs shouldpretty well cover any points that I havemissed.

Now all of this quality does not comecheap. The suggested retail price Is$650.00 which may price it out of thehands of the everyday sport flier.However, for those dedicated scaleenthusiasts, this Is an engine built

to page 178

to the

Only $5.25

0+ R/C Item

Pictured, Des-'cclbed, and Pricet

gR/C'ems, Aircraft

oats, Cars,_,Engines, Tools,

Accessories.If.

Ke than 200

tifacturers

luded

exed and

ss-lndexed fo

asy Use.

copies of the new fourth edition of theP ease send me

Radio Control Buyers Guide. Enclosed is $6.00 for each copyordered ($5.25 foreach Guide plus $.75 for postage & handling).

. (U.S. and Canada only)Total Enclosed

Name:

RDER

RECT!

street Address:

City, State. ZIP:Return to: Boynton & Assoc., Clifton House, Ciifton, VA 22024

FUtabaRADIO CONTROL SYSTEMS

ecti

d\vo^L•269

RPS HOBBIESBox 272

East Hampton, CT. 06424Prices based on mfrs. present list prices, subject to change without notice. AM units on 72 MHz. To avoid delay list alternate frequencies.Conn, add 7% sales tax. Postage handling & insurance; U.S.- $3.00, Canada- $6.00, Foreign- $20.00. Excess promptly refunded. Send payment in money order or check only (personel checks may be delayed toallow tor clearance.) No COD's.

LIST RPS

FP2GA 2ch 109.95 70.95FP2E 2ch 139.95 96.95

FP2F 2ch 139.95 96.95

FP3F 3ch 179.95 124.95FP3FN 3ch 199.95 138.95FP4FN4 4ch 299.95 197.95FP5FN 5ch 349.95 230.95FP6FN 6ch 359.95 237.95

FP7G 7ch 579.95 401.95

175

Va Scale Power ^ Bridi Models% Scale Cosmic Wind $103.i

V4 Scale Baby Ace 98.i

JfVindspiel

IVlodels

1/4 Scale SailplanesWindspiel Models

V4 Scale Jantar

V4 Scale HP 18LS-1 $69.95

Oriice 74.95

Ornith 131.95

ASW-19 131.95

ASW-20 131.95

FK-3 78.95

Cobra 15 78.95

Cobra 17 78.95

. $289.S

. . 279.i

RCo

Sailplanes SpecialsCox Airtronics Oly // $34.95AstroFUte Californian 45.95

AstroFlite ASW~15 34.95

CraftAir J-Bird 35.95

BMRC Coyote 64.95

CraftAir SD-100 38.95

Mark's Models Wanderer 99 17.95

Soarcraft Magnum 12 94.95

PierceAero Pierce 970 59.95

Legionair 140 72.95

CraftAir Viking 53.95

Cox/Airtronics AquHa w/glass fuse 69.95

New ProductsSuper-strong,molded replacement fuselagesWanderer $19.95

AquHa 19.95Paragon 19.95

Oly H 19.95

Foam replacement AquHa

wing kit $24.95

Comes complete with: foam cores. 1 /64 pfy/-wood wing sheeting, spoiler material, wing

rod tubes, and balsa wing tips!

»••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••*»•••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••••■ •••••••••••••••••••••••••••••••••••••••••••••••••••■••••••••••••••••••••••••••••••••»

Bud Nosen KitsCitabria $69.95

Mr. Mulligan 97.95

Gere Sport 89.95

Aeronca e^TBB

Cessna 310 118.95

3.95

Trainer 55.95

P-51 118.95

Big Engines and Prop Drives\uadr3 (2 cu. in) . ^ 99.95

Quadra Self Starter 139.95

Maximizer (for .so eng) 62.95

DCM Scaie SpeciaisPlatt Top Flite Jemco Proctor

. . . .79.95 \A/aco YMF-3 . . .52.95 P-39 41 95 Corsair 57.50 Nieuport II . 109.95

79.95 Spitfire 52.95 P-40 41.95 Focke-Wolf . . . .49.50 Antic 62.9579.95 T-28B 52.95 P-47 55.95 P-51 49.50 Antic Bipe 73.95

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ENGINE CLINIC

from page 175/10

exactly for your needs. Over the years, Ihave received hundreds of letters from

scale enthusiasts wanting to know whensome manufacturer was going to stopcatering to the pattern crowd, racingcrowd, etc., and market an enginestrictly for those interested in scaiemodeis. Few manufacturers could afford

to do this as the market potential is prettylimited.

Engine manufacturers have to think interms of tens of thousands in order to

justify initial tooling costs, etc. Themanufacturers of the Damo 218 areproducing the engine on a limited runbasis — hence the selling price.According to f^r. Wahl the Damo 218 is

only the first in a line of specializedengines. A marine version will beavailable and development is underwayon an inline 4.

Although the Damo 218 in intendedfor the 1/4-1/3 scale models, it is not inthe same power category as some of thelarger converted utility engines such asthe Quadra, Roper, etc. So, don't expectto stick the engine in a Bud Nosen P-51and tear around the sky. The enginelends itself more to the J-3 Cub typeaircraft where both scale appearanceand sound are desirable.

At a weight of 24.5 ounces(erroneously listed at 19 ounces by themanufacturer) the engine is not tooheavy to be used in many .60 size scalemodels. Being of four stroke design, theengine makes more of a muffled roarthan the high pitch whine of a singlecylinder two stroke engine. With mufflersit would be almost inaudible. Mufflers

are available for the Damo, although I

did not receive them with the engine. Tofurther quiet the engine during the initialbreak-in, I fabricated a 5/8" diametermanifold connecting the two exhaustpipes. From the manifold, I used a single1/2" diameter exit pipe. The idea wasthat I could, in turn, then connect a singlemuffler. However, the muffler was notnecessary as the manifold itself furtherquieted the engine to the point where itwas barely audible 50 feet from theengine. In fact, propeller noise with an18/6 was louder than the exhaust noise.An interesting fact was that the manifoldwas good for an increase in rpm of300-400. I checked engine rpm to seehow much loss would be incurred with

the manifold and was surprised to find itgave an increase. Whether this was dueto a slight tuning effect, or the enginefound slight back pressure beneficial, Ido not know. All powerchecks, however,were made without the manifold.

to page 180

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ENGINE CLINIC

from page 178/10

So, to wrap it up guys, the main sellingfeatures of the Damo 218 are extremelyquiet operation, scale appearance andsound, a minimum amount of oil in thefuel required which means no moremess on the airplane, very low vibration,and a high quality piece of machinery.

I understand that Jerry Nelson atNelson Model Products, 6929 West 59thStreet, Chicago, lllinios 60638, will bethe U.S. importer of the engine, soreplacement parts and repair service willbe available in this country. □

CUNNINGHAM ON RC

from page 7 "

making the logical location of the controlhorn on the bottom of the elevator. Goodpushrod building generally prevents thebowing problem, but the Biggies presentquite a larger load.

There are several ways tocompensate for this. First, you can use anormal pushrod set-up, but install abracing system throughout the fuselage.This still may allow the rod assembly toflex — and, you must build this in whilethe bird is under construction. Second,you can locate the servos toward therear of the aircraft, using "extension"cords to connect the servos to thereceiver. This will allow you to use muchshorter pushrods and this, in itself, willeliminate a great amount of bowing.Next, you can mount the control horn onthe top of the elevator so that thepushrod is angled down through thehorizontal stab and fuselage. Alwaysavoid right angle bends In the pushrod.This gives you the positive "pull" on theelevator which then has no bowingproblem. The fourth method Is to usecables just as are used on full scaleaircraft. This method can be a bit moredifficult to hook up, and more difficult toadjust than the single pushrod, but may,in the long run, give you a more positivecontrol of the elevator. Perhaps acombination of cables and shortpushrods would be the simple answer.

The elevator Is the biggest problembecause it can get you into or out oftrouble so quickly. Aileron connections,using two servos, can pretty well solvethe problem: Jerry Smith showed asimple and neat installation in his Here'sHow column a couple of months ago.(Even though you don't need two aileronsen/os on the Lazy Ace, Jerry.) I'm goingto use Jerry's method on my new bird.

Another place to consider controlquestions and problems is in the tailwheel connection to the rudder. On mostR/C aircraft, this is a pretty simple hookup, but as the aircraft become larger it is

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more necessary to protect the rudderservo from hard landing shocks, as wellas having the tail wheel swing In a muchsmaller arc than the rudder swings. Thiscan be accomplished by studying fullscale tail wheel fittings, noticing thesprings used both to dampen the rudderswings, and to dampen the landingloads. One servo is certainly enoughmuscle for the rudder, but protect thisservo from tail wheel problems. And, ifyou swing the tail wheel in a muchsmaller arc, the take-off problems will bemuch less, due to this smaller off set. Asi have said so many times before, thesecret to making successful take-offs,with a tail dragger, is to get the horizontalstab up to flying attitude as quickly aspossible.There is no better way to gain an

introduction into Big R/C aircraft than bybuilding and flying a seven or eight footantique cabin model. Not only is it fun tofly, but also gets you thinking big!

And. speaking of thinking big, this isthe last chance that I will have to remind

you to come to Fort Worth, Texas, for theFirst Annual Southwestern Jumbo RC

Fly In. This great "Happening" will beheld July 22-23, at Thunderbird Field, onthe shores of Lake Benbrook, just westof Fort Worth. Any big aircraft is eligibleto participate. No competition, just a gettogether to see what the other guy hasbuilt, how he has done it, and what hisnext project will be. You can bring aQuarter Scale, a Semi-scale Biggie, anAntique, a large glider, a half finished, ora fully completed model. The onlyrequirements are that a monoplanemust have a wing span greater than 80"and a bipe must span greater than 66".After that, you're on your own. Strictfrequency control will be maintained.This Fly In is hosted by the Fort WorthThunderbirds and sponsored bySkymaster Industries. So, mark yourcalendar and be at the T-bird Field July22-23. Write to me at 2440 Colonial

Parkway for a map and any other furtherdetails.

As I said previously, control systemsare the secretto long and happy hours offlying from 1 /2A aircraft to 1 /4 or 112 sizeaircraft, Make sure that you do a goodjob here, and you'll go a long waytowards having many happy hours in theair. □

FROM THE SHOP

from page 2

The other variation of the turn is one inwhich the airplane yaws through 540degrees instead of the usual 180degrees. It's somewhat on the order ofthe Lomchevakin that once the airplaneis correctly entered into the maneuverthe pilot need only stand and watch.

to page 183

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181

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FROM THE SHOP

from page 181/2

My current aircraft is a German modelcalied a Mini-Flipper. It's a low winged,54"span, fiberglass and foam, 7poundcraft powered by one of Clarence'sfinest .6Ts. I discovered it wouldperform the 540 degree stall turn quiteby accident but since then have beenable to repeat the maneuver on asometime basis. The best entry seemsto be similar to the regular stall turn entryexcept that the rudder is used duringthe last slow part of the climb on aleft-right-left basis (for a left turn) timedto coincide with the natural yawoscillation frequency of the aircraft. Theaircraft will yaw to the left, more stronglyto the right, and very strongly to the leftand, if the final left hand yaw is done justbefore the aircraft stops, power is keptfull on, and you cross your fingers. Theship can be made to yaw the full 540degrees, the plane ofthe yaw remainingin the plane of the turn, just as the usual180 degree yaw is supposed too. Themaneuver is very pretty if performedcorrectly. Hope some of your readerswill give this maneuver a try. I'd like toknow of an aircraft and a technique thatwill work every time.

Sincerely,Darren

•

Walter Nutini, president of TheAeromodeling Brasilian Association,sends us the following letter and photostelling about their RC demonstrations infront of 140,000 spectators!Dear Mr. Dewey,The Aeromodeling Brasilian

Association have presented someaeromodelism shows during therecesses of the plays of the Foot-ballBrazilian Championships.The team that participates in these

shows is called "Esquadriiha SentaPua". They dress in black and orangeuniforms and perform exhibitions inU-Control, RIC Acrobacy, and R/CHelicopters.Enclosed are some photos which

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REVENGER.60-Size Pattern Designed by Dick Russ

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wing with a 747 square-inch area helps retracts, engine and radio mounts,it perform all AMA-FAI maneuvers with cover or paint and you're ready toa new kind of smoothness. You can compete. Total weight BVi to 8% lbs.read all about it in the April 1978RC Modeler.Revenger comes to you highly

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The following letter tells about areader who read one of our feature

articles and went on to experiment andenjoy the results.

I am enclosing two photographswhich are seif-explanatory. The ideawas obtained from your February 1976ROM and both the aeroplane and theparachutist were made by my son RegoBurger, age 15 years. He is seen on theleft of the photo and the friend is Mr.Sidny Endenman, also of the Port

Thank you for letting me tell aboutsome of the news of the "EsquadrihaSenta Pua".

Sincerely,Walter Nutini

President

Elizabeth Radio Flyers. The planenicknamed the "Coffin" is powered by aWebra .61 Speed and weighs QVzlbs.,with the parachutist. We have hadsuccessfuljumps and all that remains ispractice in judging wind and height forsuccessful controlling. We have triedboth types of chutes and have givenpreference to the old circular type. We

will, however, continue to practice withboth types of chutes. If there are anyother young lads who would wish towrite to us, please print our address. Wepromise to reply to any letter received.

Yours faithfuiiy,G. Burger

10 Gladstone St.

Port Elizabeth

South Africa•

Wolfang Jung of Pforzheim,

$14.50Less Pots

NEW! SINGLE STICK KNOB

IMPROVED! 2 AXIS GIMBAlThe already famous Dunham's E-Z-TRIM Gimbals, chosen byR/C Manufactures throughout the entire world for superiormechanical and electrical centering, now improved to give evenmore positive "center feel" and smoother overall operation.

Now available in single stick mode with ALL NEW LightWeight Knob and E-Z Trim.f.

1100 N. LAKE HAVASU AVENUE, SUITE I

LAKE HAVASU CITY, ARIZONA 86403

IhF'

$24.50Less Pots

Knob $8.95 less pot

184

HELP US FIGHT FOR YOUR LIFE

Have YourBlood Pressure Checked

American Heart Association (J)WE'RE FIGHTING FOR YOUR LIFE

Germany, sends us these photos andspecifications of two interesting models— the Caravelle (Air France) and anAirbus (prototype).The specs for the Caravelle are: Wing

span: 3,55 m; Fuselage length: 3,31 m;Height: 0,83 m; Weight: 11,5 kg; Motor:Hirtenberger 10 ccm, 2 pcs, HP .61;Working hours: Approximately 500hours. He uses a Multiplex Royal with 8pcs servos.

The Airbus specs are: Wing span:3,20 m; Fuselage length: 3,31 m;

Height: 0,90 m; Weight; 14 kg; Motor:Hirtenberger 10 ccm, 2 pcs, HP .61;Working hours: Approximately 700hours. It has retract landing gear and aMultiplex Professional radio control with10 pcs servos.

Our thanks to Mr. Jung for sharingthese interesting and exciting modelswith us.

•

We are aware that many of oursubscribers have been receiving theircopies of ROM in less than idealconditions. Several months ago ourmailer notified us that their wrappingmachine was no longer working andthey could not replace it — since ROMwas their only customer willing to pay theextra costs involved in having theirsubscription copies wrapped.Therefore, we have now made

arrangements with our mailer andenvelope supplier to have al lsubscriber's copies put in an envelope.We will be able to do this starting with the

September issue for all subscribers whodesire this service.

Since we feel it would be unfair to

increase the subscription rate to allsubscribers, whether they want theircopy of RCM in an envelope or not—wehave decided, instead, to let eachsubscriber choose for himself.

If you want your copy in an envelopethe cost will be $3.00 per year or .25? perissue.

Simply send .25? multiplied by thenumber of issues you currently have lefton your subscription. You wiil find yourexpiration date on your mailing label.Example; John Doe 7-79 — expirationdate is July 1979. Therefore, .25? x 11(September 1978 issue to July 1979issue) would equal $2.75. Mr. Doe hasonly to remit $2.75 and the coupon onpage 187 of this issue and he will startreceiving RCM in an envelope.We hope this will help alleviate the

difficulties so many of you have beenexperiencing in regards to torn andmangied issues. This is our actual coston envelopes, postage, and handlingcharges. Just let us know as soon aspossible so we will be able to put yourRCM in a sturdy envelope.(.. . Okay, all you guys in Toledo -1

told you I was listening! - Pat Crews.)•

See you next month. Good flying. □

TATONEPRODUCTS CORPORATIONI

PROVEN AND RELIABLE ACCESSORIES

ENGINE MOUNTSTANK MOUNTSMUFFLERSTIMERSSCALE INSTRUMENTSNOSE GEARTEST STANDSULTRASONIC CLEANERS

MANY OTHER ACCESSORIESSEE YOUR DEALERSEND FOR CATALOG

• CAR BUFFS-SEND FOR OURTHUNDER ROADCATALOG.

TATONE PRODUCTS CORPORATION1209 GENEVA ST. SAN FRANCISCO, CA 94112

I ULTRASONIC CLEANERN • Three dimensional

cleaning action

« Patented powerpump circuit

• Removes metal chips,hard grease - evenmicroscopic dirt

Clean it in Vsoth the timewith sound waves. . .AND DO IT 16 TIMES CLEANER THAN SCRUBBING, RUBBING OR BRUSHING!

A MUST FOR ALL ENGINE WORK, IDEALFOR CLUB USE OR HOBBY SHOPS.

2.1 QT CAPACITY $165.00 4.6 QT CAPACITY $185.00

RCM PRODUCTSRCM WING JIG II — PRICE: $34.50

mThe original RCM Wing Jig, first published in the August 1967 issue of this magazine made It possible for many modelers to build their airplane wings warp-free and In far less time than It had

previously taken. The RCM Wing Jig II offers many design improvements on the original version that greatly extends both its versatility and the accuracy of the wings produced. It is now usedexciusively in the RCM shop for all building projects.

Since the accuracy of the jig depends almost completely on precise fabrication and fit of the parts. RCM has made arrangements to have a limited quantity of these Wing Jigs manufacturedwhich are now available through the RCM Product Division.The RCM Wing Jig II consists of two sections hinged in ttie middle. Each section consists of a front and bad«'"L" shaped base piece. A jig rod support is located at either end of each wing jig

section to mount the rods that support the wing ribs.The switch to a double length jig that's hinged in the middle makes it possible to build an entire wing, complete with the dihedral called for in the plans. In one operation. Or. the Wing Jig 11 can be

setupflatiouse both sections to build upa wing panel foroneofthose big powered orgliderjobs, Or. with the dihedral set. a polyhedral wing can be accurately built. Itcanevenbeused to join foamwing halves to get the dihedral as It should be.A uniquety designed rod end support makes If possible to tme the wing jig rods to order. A simple protractor device makes it possible to set the dihedral even when It Is given in degrees. The

addition of adjustable end legs make It possible to set the dihedral accurately for each wing panel. New "L" shaped base pieces assure awarp freejig to start with. A yardstick attached to the frontof the base pieces helps inspacing the ribs vrhen the wing isset up on Ihejig.A bubble leveling arrangement assures bothvringpan^swill be true toeach other. Anew design rod support makes itpossible to move the two wing jig rods from as close asyou'd want them to 6^^" apart And. a new technique m^es it possible to build those small cord wings with ribs toonarrow for two wingpg rodholes.

To use the Wing Jig. holes are drilled in the wing ribs, the proper dihedral is set on the jig. and. the ribs are slid onto the wing jig rods. The rods are aligned and clamped down, the ribs are propertyspaced, and. the spars, leading and trailing edge and top sheeting is glued In place. The wing is removed from the jig and the bottom sheeting is glued In place. Rnally. glass cloth and resin Isapplied to the center section, and. the wing tips are installed.

That's It, the RCM Wing Jig II—the most versatile, easy to use and convenient wing jig ever designed. Assembly time is approximately one hourandyou'll be ready to build your next wing fasterand with moreaccuracythan you everdreamed possible. This is theonly Wing Jig endorsed and manufactured by RCM.

UOKTrMAAKCR

InttaM ngM — IriH houn

or>9ni(rhaimcal

Now, with Cyalume* Lightsticks you can fly your R/C aircraft t night for up to eight hours. Usedextensively by RC'ers on the West Coast for night flying of R/C sailplanes, one Cyalume*Lightstick is mounted on the bottom of each wing, near the tip, and another on the Hi-Start justbelow the chute. Originally designed by the gamerican Cyanamid Company for use by the U.S.Navy, Cyalume® chemical lights are far higher in visibility than conventional electric lightsources. Completely non-toxic or hazardous, simply bend the external plastic case which breaksthe internal glass tube. Shake vigorously, and theflourescent green liquid material glows brightlyand can be seen further than any normal light source or emergency marker. The light sourcelasts up to 20 hours with maximum brilliance for R/C usage diminishing after 6 hours. Simplecapacitor clips can be used to mount them to your aircraft. A cellophane, or plastic, sleeve or adifferent color can be slipped over one. if so desired, in order to differentiate aircraft direction.Cyalume® Lightsticks are also excellent to carry in the car or camper as emergency lightsources. Price is $4.75 per box of three Cyalume® Lightsticks and includes postage andhandling.

FOAM

CUTTING

WIRE

Now available from RCM Products is the finest

quality Nichrome wire for foam wing cutters.Available in packaged 5 foot lengths for $2.00,this is the finest material of its kind available. It

is designed for extremely precise and smoothcutting of foam wing cores, and can be usedwith any commercial or home-built foam wingcutter.

WANT AN RCM DCCAL?

Send a self

addressed

stampedenvelope to:RCM Decals,P.O. Box 487

Sierra Madre,Calif. 91024.

Laytriedecal lace down with enamel side 0(1 a table top. Peelthe backing paper away. The plate will have the stidcy sideup & will adhere to your finger. Holding it tiat, apply in position. After application, wipe hard with a soft cloth, then withsqueegee, tie down all the edges. After 48 hour set up atroom temperature, decal will adhere permanently.

Sl.SO Poftpaid

RCM CIRCLE SCALE

It's a compass for accurate circles to 6" in 1/6"increments.

It's a metric scale from 0 to 150 millimeters.

It's a 6" scale with 1/8" division.

It's an equivalents scale showing fraction, decimal and millimeter equivalents.

H's 8 tap and drill chart showing drill decimals, tapdrills, threads, and tap sizes.

It's a lettering guide.It's a square and protractor.It's a Fahrenheit and csntigrads equivalentOne of the most valuable tools you can have in yourshop.

R/C MODELER MAGAZINEP.O. Box 467

Sierra Madre, Calif. 91024

Please send the following RCM Products

RCM Wing Jig II @ $34.50 ea.

-Box(s) Cyalume® Lightsticks @ $4.75 per twx

-Package(s) .Foam Cutting Wire @ $2.00 ea.

Name

-Circle Scale(s) @ $1.50 ea.

-Calif, residents add 6%tax.

Addr-Total Payment Enclosed

□ 2 RCM Decals — Free with self-addressed stamped envelope

City. M.C.or6ofA#Bank Nam*

State .Zip, Expiration Dal*SIgnotur*

RCM PLANS SERVICE

D.H. GYPSY MOTH

By Gordon Whitehead

A truly fine .15-.20 poweredStand-Off Scale model of the

famous original produced from1925 to the mid 30's. This one with awing span of 45". One plan sheet;331/2" X 46%".

RCM TRAINER 5

By Joe Bridi

Finally, along comes the Trainer 5.Designed for .049-.051 power andjust Intended for fun flying. Oneplan sheet: 26%" x 36%".

VOYAGEUR II

By Terry Alan Blake

Designed for the scratch builder,both beginner and experienced,this 85" span sailplane will satisfythe pilot who wants a good thermalship. One plan sheet: 29%" x 42".

#734 $4.50 #735 S2.75 #736 $3.50

A REPRINT OF THE ORIGINAL CONSTRUCTION ARTICLE IS INCLUDED WITH EACH PLAN ORDERED

R/C MODELER MAGAZINE

P.O. BOX 487SIERRA MADRE, CA. 91024ATTN: PLANS SERVICE

INSTRUCTIONS FOR ORDERING PLANSPlans for each construction anicia featured in R/C Modeler f^agazine are just as close as yourmailbox. Your order is given individual attention and processed by our own Plans Departmeni,Each plan is a full-size, individual biueilne print of the highest quality. Reproduced from themaster Cronafiex which was made from the original drawing. Ail plans sent 3rd or 4th Classmail. For Airmail or Rrst Class service add 25% of your total order. Airmail Overseas ordersadd 50% additional to your order and remit by International Money Order. Postage paid forAPO and FPO orders. Make ail checks payable to R/C Modeler Magazirte. Caibmia residents add 6% sales tax. If you would like your plans mailed 1 st Class, rolled In a mailingtube, add $3.00 for 1-4 plans, $3.50 for 5-10 plarts. Umit 10 pjans per tube. Mall tubeoffer good only In U.S.A. If amourit enclosed tor Airmait or nrst Class postage is not

M C. or Bof A #

Bank Name

Expiration Date -

Signature

matter.

BACKED TEMPLATES

sufficient, plans will tw sent 3rd Class or printedRCM WINDANCER ADHESIVE

Now you can avoid cutting up your RCM plans and having to spray Ihecut-out ribs, bulkheads,etc. with contactor rubber cement. RCM s Windancer Adhesive backed templates are printedon Bvy" X11" sheets with peel-off backirtg so that you can arrange the parts on your woodstock with the least amount of waste material. Once positioned, simply peel off the backingmaterial and press in place on the wood. They can be removed from the balsa or plywood andre-positiooed as necessary, but remain firmly in place lor cutting the material. No adhesiveresidue remains on the wood. Packed In a clear polyethelene plastic envelope, RCM'sWindancer Adhesive backed templates are available for any plan indicated by (he plannumber followed by the letter "T".

RCM WINDANCER ADHESIVE BACKED TEMPLATES AVAILABLE FOR:

#620T BeechCTatl Staggerwitx) $4.75—#579T Berlner Joyce S5.50#554T Super Kaos Jr. $3.25—#354T RCM Trainer $2.95—#591T Sun-R» $3.95#630T F-86 Sabre $4.50—#4a2T Wayfarer $4.25—#567T Centurion 11 $2,75

#572T DeHavlBand D.H. 2 $4.95—#602T Dirty Birdy $2.95#642T Focke-WufI Ta 154 $5.25—#649T PBY-2 Cataiina $4.95.#671T Republic Se^>ee $4.50—#682T Miss Kat Brat $4.50

#69eT UFO $2.95—#703T Culver Dart $3.95#725T TMTT $3.50

Name

Address

City State Zlp_

$ RCM PIsn Catalog (60e)

$ Amount for tha followtng plans: # # #

S Amount for the following templates: # # #

$ Amount for lat Class Mali Tube ($3.00 for 1-4 pfana, $3.50 for HO)

(This Includes postage — Offer good only M U.S.A.)

. Amount lor U.S. 1st Class postage (25% of order)

.Amount for Air Mail Overseas postage (50% of order)

. Caltfomla reeldenu add 9% ealee tax

.TOTAL AMOUNT ENCLOSED

$-

$-

$-

$-

Q 3rd or 4th Class Mail (no postage naceasary).Allow 2-4 weeks delivery. No C.O.O.'s.

Foreign orders will not be proceeeed until Money Order la received In our office.

SUBSCRIBE TO RCM

Mail To:

R/C MODELER MAGAZINE

P.O. BOX 487

SIERRA MADRE, CALIFORNIA 91024

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□ New Subscription□ Extend my present subscription

ENVELOPEINFORMATION

If you want your remaining subscriptioncopies mailed in an envelope, the cost is$3.00 per year or .250 per issue.

Simply send .250 multiplied by thenumber of issues you currently have left onyour subscription. You will find yourexpiration date on your mailing label.

Example: John Doe 7-79 — expirationdate is July 1979 issue. Therefore, .250 x 11(SepteiTiber 1978 issue to July 1979 issue)would equal $2.75. Mr. Doe has only toremit $2.75 to have his remaining issuesmailed in an envelope.

issues remaining x .250 = $

187

READERS EXCHANGETOM'S HOBBY KORNER, 1 13 Graniteville Rd., Chelmsford,Moss. 0IB24, Radios — Fulabo 2 Cb. $82.00, 3 Ch. $145,00, 4Ch. $195.00, 6 Ch. $215-00; MRC 765 $229.00; Kroh KP5C$285.00. Prices subjecMo chcinge. Please coll for current prices.Engines — Super Tigre .23 $31.50, .35 533.95, .46 539.95, .60$48.00; Enyo 40XTV $69.00, .60XFTV $110.00; O.S. Max .10Schneurle $22.50, .25 Schneurle $39.03, .60 Schneurle $65.00,

.60 Schneurle w/pump $95.00. All engines ore throttled engines.Kits — Andrews H-Roy $27.00, SIg Kodet $27.95, (Excellenttrainers.) Complete stock of most popular kits to choose from.Competitively priced. Accessories — Complete stock of all mojorbrands. 20% discount. We pride ourselves on being one of themost complete RC shops in the country, fuel — Power BlastContest 1000 (12'lf NItro) $200.00 per 55 gol. drum. Power BlostSport 750 ilW/c NItro) $185.00 per 55 gol. drum. Freight FOBMaiden, Moss. Give us a coll or stop In for o visit with Tom, Mikeor Roger. Hours — Mondoy through Fridoy 5:30 to 9:00 RM,Soturdoys 10:00 AM to 5:00 PM. Phone (617> 251-4576 for fastCOO service or send certified check or Money Order. Add $1.00for hondling.

K & B/VECO .61 CUSTOM ENGINES selectively hand fit andassembled by designer Clarence Lee. Complete with muffler andnew Perry pump/regulator and POP Mod $123.50. Withoutpump/regulator $98.50. K & B 6.5 (.40) Schnuerle Customs forFormula I $99.50. Veco .19 Customs $52.00 — with Perrycorburetor $60.00. Custom versions of all engines In K & B lineIncluding Morlne ovoilable. Write for prices. Trade In allowancefor old time ignition engines or will buy outright. Deoler Inquiryinvited. C.F. Lee Mfg. Co., 7215 Foothill Blvd., Tuiungo,California 91042.

BACK ISSUE mogoilnes, we buy trade and sell RCM, ModelAirplane News, Air Trolls, Flying Aces — 1920-1978. Sendstomped envelope. Free list. Everybody's Bookshop, Dept. RC,317 West Sixth St., Los Angeles, California 90014.

"SAILPLANE DESIGNER'S HANDBOOK" — Cleor Instructions. 175NACA and Eppler airfoils. How to size and locale components.Performance, stoblllty and scale effects, $5,50. Eric Lister, 410Reglna Dr., Clarksburg, MD 20734.

RADIO AND ENGINES repoired: Nationwide service on Healhkits,World Engines, Pro-Line, Kroft, Royal, O.S., Super Tigre, Webra,Enyo. 90 day guorantee. $35.00 maximum charge on rodlos.$1 2.50 on engines. Parts extra ot reduced prices. Please enclosephone number and charge batteries. Write or coll for our lowprices on Kroft, KGL, KSE, W.E., Pro-Line; Royol rodios; O-S.,< & B, Webro, Enya engines; and other RC equipment. AeroTech Products, P.O. Box 182, Lake HIawatho, New Jersey 07034.(201) 887-7672,

GUARANTEED TWIST DRILLS. #50 through #80. $1.50 brings 2drills, any size, plus particulars. Arvid Anderson, Frederick,Wisconsin 54837.

CASH FOR ENGINES worn, obsolete R/C, glow 80% complete $5each. Ignition, others describe for offer. Especially desire S.T.ond racing engines. Arthur DeKalb, 10189 Crane Rd., Lindley,N.Y, 14858.

MODEL PLANS new catalog updated. Scole plans R/C, U/C, F/F.Send 25C for postage ond handling to new oddress. HobbyHelpers, P.O. Box 217, Glenville Sro., Greenwich Conn. 06830.

AIRCRAFT PLYWOOD — Wing Skins .4mm x 50" x 50" SI6.50,.6mm X 50" x 50", $14.50. All the following ore 12" x 48" size (oilIn stock). 1/32" $4.30; 1/16" $4.30; 3/32" $5-05; 1/8" $5.40;3/16" $5.75; 1/4" $5.75. Poplar light ply 1/8" 3-20. Mln. order$20.00. Add $2.00 for U.P.S. For complete list, dealers, scratchbuilders write to: John S. Chuckran, 22 Loring Street, Brockton,MA 02402.

WANTED: OLD SPARK Ignition model oirplane motors. RussellStokes Rr. I, Box 73J. Keller, Texas 7624S.

R/C COUNTRY gliders - scale - old-timers- M. Von Scvoc, 610EaslAJosta, Glendora, Collfornio 91740-

LOWER PRICES ot Fisher RC, check us out, Kroft KP4a $205.00,KP5C $208.00, KP6o $230.00, Futabo 4 $200.00, Futobo 6$240.00, Max .60 Schneurle @ $84.00. Fisher RC, 17 SalmiRood, Fromlnghom, Massachusetts 01701.

READY BUILT MODELS In stock. A}so moil order service. Send for

listing of plones ond low prices on radios, plones, engines, etc.Pleose send SASE to R/C Hobby Shop. Inc., 211 Chose Ave.,Woterbury. Connecticut 06704. Tel. (203) 574.1678.

R/C MODEL AIRCRAFT built to order from kit or plons — 45 yearsexperience. Gene DuBois, 14 Budono Drive, Acushnet,Mossochusetis 02743.

PLANE LOST? Find It fast! with Sove-A-Plane Lost Plane Locoter.Horn blosts when receiver loses signal. Weighs 1 oz. Low currentdrain. $19.95 poslpold guoronteed. Save-A-Plone, P.O. Box344, Cos Cob, Connecticut 06807.

PROPELLERS — CARVE your own, experimental ond modelolrcroft. Method Is simple and occurote — $3.00. Mende, BoxISO, Ouitmon, Arkonsos 72131.

WARBIRDS — WILL BUILD R/C Stond-Off Scole WWII plones.Send SASE for price listing. Bob Atkinson, 3252 Strawberry Lone,Decolur, Georgia 30034.

MUST SELL HOFF , BO Twin, K & 6 ,61 pump, Heothkil 8 channeland occessories, never used. Moke on offer, John E. Whelon,511 Hill Street, No. 206, Santo Monica, Collfornio 90405.

FOKKER EV 84" wlngspon — 16 pound complete with engine.Winner ot Toledo and WRAMS Show. Send SASE for picture orprice. Coll or write: Mark Minnig, #50 Formbrook Drive, OldBridge, New Jersey 08857. (201) 254-2529.

B-17 COMPLETE ond ready to fly. Tom Cook's 1972 Nots winnerScale Achievement Award, AMA scole with four Veco .19's.Excellent condition. Make offer but serious inquiries only.Kenneth Gottscholl, 1504 Brent, KnoxvIHe, Tennessee 37919.

MODELER'S WAREHOUSE — Big Stuff . . . Ouodro engines$105-, Maximizer $61.50. Mick Reeves 80" Hawker Hurricone$110, Bud Nosen Kits ond Big props. Smoll Stuff . . . House ofBolso: P-51, P.39, Me-I09or Chipmunk $18.50, P-47orFW.I90$20.50; Flyline Models: Folrchild 22 $18.00, Steormon, KInnerSport or Inland Sport $9.00, Quiet Stuff , , . Croft-AIr: Salloire$85.00, Viking $47,50, SD-IOO $37.50, Super Hi-stori $34,00;Solent Soilplanes: Ridge Racer $85.00; Pierce Poragon $39.50;Airlronics: Aqullo $42.00. Scale Stuff . . . Master-Kit: HIperbIpe$40.00; Proctor NiejpOrt 11 $112.50; G-S products: HowordDGA-15 or Stinson SR-6 $62.50. Other Stuff . . . Proctor Antic

$65.00, Antic Bipe $75.00, Mini-Antic $42.00; CoverllePermogloss: 38" x 43" $6.50, 43" x 15' $27.50, Comoufloge$28.00, Aluminum $30.00, Antique $22.00. Amerlcon EdelstaolMochinex 5, Millcott Speciolist R/C systems, Futabo R/C,Associated R/C cars and accessories, K & B engines ond muchmore . . . SSAE For prices. Postoge: small kits $1.50, large kits$3.00, super kits ond R/C's $4.50. P.O. Box 8566, Metoirle,Loulsiono 70011.

HELI-6ABY, Spore rotor. Heath 5 chonnel prop., never flown,storter $325 or best offer, Ralph H. Kolb, 2275 E. Boy Dr., Apt.1005-D. Cleorwoter. Florldo 33516.

FOR SALE — used Rot Buggy complete with Aero Sport Two withnlcods, and K & B .19. Asking $275.00. Open to offers. JohnKnowtcs, 2011 Porter Wagner Blvd., West Plains, Missouri65775.

1977 SERIES KRAFT Kp.75 single stick on 72.400 complete withKPS-1 1 servos, stilt in corton, brand new, never used — plus oneextra receiver on 72.400, two extro KPS-11 servos, one extra

KB-4E airborne battery, two extro switch homess, oil brond new— will sell for $525.00. B.J. Plunket, 1610-21 Ave., Altoono.Pennsylvania 16601. (614) 942-6467.

EK SINGLE STICK, 7 chonnel Super Pro system, complete, brondnew, never out of box — $265.00. Tom Mohon, 3125 Wilkins

Way, Cormichoel, Collfornio 95608.

5 CYLINDER MORTON Engine in mini condition with alum, propcomplete $995.00 or best offer. M.A. Joseph, 20700 Mock Ave.,Grosse Pre Wds., AAlchlgon 48236. (313) 886-9333.

H08IE HAWK, RS Radio, 72.08. orange, nlcads, ail factorydone. Flown twice, excellent condition — $300.00. MorcyGutierrez, Jr., 1225 W. Pine, Sonto Ano, California 92703.

10' BI7 COMP. built — $795 list. 4 O.S. .40 Schnuerle B.N.

$64.95 list. $550.00 for all. Movies of fight available. GeorgeBjorklond, 933 Dogwood Troll, Frankltn Lakes, New Jersey07417. (201) 337-0782.

TRADE IN your old radio system on o new ProLlne system. Weoffer surprising volues on used systems. Checkout prices on allfine R/C supplies. Dealer Inquiries Invited. The Great WesternAeroplone Foctory. P.O. Box 8885, Boise, Idaho 83707,

NORTHEAST R/C

CHAMPIONSHIPSSponsored by

The Radio Control Club

of Connecticut

August 26 and 27, 1978

Sikorsky Memorial AirportStratford, Connecticut

Events:

Novice - Advance • Expert - Master

Pre-registration discountcloses August 10

$10 single event— $15 dual event

for fiirlher informaiioii conUici:

C.D. Tom Prescott

P.O. Box 205

Stratford, CT 06497or

Art Fressola

(203) 375-5607 or (203) 929-7578

•k coming next issue -k

Cobra 21 power boat designed for electricor .09-.21 cu. in. glow engines by

David Thomas

1/4 size Rearwin speedster by Joe Bridi

CLASSIFIED ADVERTISING ORDER FORM

NON-COMMERCIAL fan ad$ only; Commorcial ods of any kind not acceptable at this special reduced rate.RATE: 15 words or less $3.50 in advance. Nome and address free. Additional words 20 cents each.

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186

ADVERTISERS

1 Ace Rodio Control 20-212 Aeromobis Design 1203 Aerotrend Products 1614 Allied Hobbies 1745 AAAA AAembership Application 1666 Americon R/C Helicopters..., 1357 Americo's Hobby Center, Inc. 1736 Aquorium Mogozine 1829 Associated 116-14310 BACA Products 1201 1 Balsa U.S.A 17912 BO Hobby Worehouse 14413 BK Products 16814 Brown Hobby Center 13915 Bud Nosen Models 112-11316 Colgory Hobby Supply Ltd 16317 Connon Electronics 16918 Corl Goldberg Models II19 Collect-Air Photos 17220 Coveriie 1221 Cox Airtronics 105-13722 Croft-Air 11523 DoCo Model Products 2624 DA Enterprises 14225 Dove's Custom Models 176-17726 Davis Diesel 18027 Dovis Engineering Co 1228 O.C. Engineering 16129 D i D Electronic SpeclollsH 12230 Des Tek Industries 18131 DJ'S Multi-Stripe 15132 D.L. Wright Co 16933 Dodgson Designs 15434 Dremel Monofoclorlng 2335 Du-Bro Products 1936 Dunham's R4 R 18437 Eorl's Hobbies 10938 Edson Enterprises 17239 EK Products 12940 Empire Models . 118-11941 E-W-H-Speciolties 11642 Pitts Photo & Hobby Shop 17243 Filzpotrick Engines 17-15844 Flared Tip Axle 15645 Flyline Models 15446 Fox Monufocturlng 12-18147 Fusite 162

48 Futoba 2nd Cover49 GBS Enterprises 17150 Gilbert's Electronics 14151 Heoth Compony 13152 Hitachi 15953 Hobby Born 146-147-148-14954 Hobbyist 18055 Hobby Lobby IntI 3-4-5-656 Hobby Market 106-10757 Hobby Shock 8-9-14-80-81-14558 Hobby World 11059 Homer's Soles 15460 House of Bolso 16161 Idea Development Inc 16362 Indy RC 190-191-192-3rd Cover63 Jocx Stafford Models 15064 J.A. Enterprises 16065 Joe's Hobby Center, Inc 15566 Kovon 14)67 K & B Aurora 12568 King's R/C Distributors 15569 Ktofr Midwest 18370 Kroft Oronge County 16271 Kroft Southwestern 14272 Kroft Systems 25-150-16873 K 4 S Engineering 18074 Kuitom Kraftsrfionship 17275 Lonier Industries 17076 Leisure Electronics 11477 Lilco Systems 15778 L 4 L Electronics 16979 L.R. Toyior 4 Co 10880 M.A.C.K. Products 16881 Mark's Models *. 17182 Midwest Model Supply Co 13283 MnM Rodlomodels 12484 Model Fectory 14405 Model Merchant 18486 Model Rectifier Corp 4th Cover87 Morgan's Hobby Enterprises 12888 Mulchler's Hobbies 10489 Nor'l Model Alrplone Champs 12090 Nelson Model Products ' 18391 Northeast Engineering 2692 NSS 18093 Ohio Superstor Model Prod I 2894 Oronge Coost Hobbies 123

95 Poctro Industries 16396 Peck Polymers .- 18397 Perry Aeromotive 12498 PICA 133-13499 Prolher Producls 134100 Pfo-cislon Products 12110! Proclor Enterprises 155102 Radar Co. Ltd 131103 R.A.M 166104 Radio South, Inc 108105 RC Buyers Club 172106 RC Buyers Guide 175107 R/C Hongor 154108 RCM Anthology library 130-152-153109 RCM Binders 1521 TO RCM Pions Service 1871 11 RCM Producls 166i 12 RCM Subscription Service 187113 Robofl Mfg. Co 136114 Royal 13-167115 RPS Hobbies 175116 R 4 S Hobby Products 117117 Son Antonio Hobby Shop 178110 Sotellite City 160119 S.C. Modeler 183

120 Seowoy Volley Hobby Shop 180121 Sig Monufocturing Co 126-127122 Skymosler industries 135123 Solution Aeromodel 128124 Stordord Hobby 164-1651 25 Sterling Models 28126 Stewart Aircraft 138127 Stricks Enterprises 1 17128 Totone Products 185129 Thorp Monufocturing 155130 Top Fliie Models Inc 3!131 Tower Hobbies 07-88-89-90-91-92-93132 Vonlec 136133 Vorioc Mfg. Co 170134 Vottex Model Engineering 156135 Warehouse Hobbies Ml136 Weslport Inlernaliona! 122137 Williams Bros 181138 Windspiel Models - 178139 Wing Mfg ; 151140 Winning Model 4 Hobby 172141 World Engines 96-97

READERS SERVICE

The following advertisers have additional free information. Simply circle the number corresponding to the advertiser from whom you wantthe Information.

8. America's Hobby Center, Inc. 49. Fox Manufacturing 112. MRC9. BACA 51. Futaba Electronics 117. Pactra Industries16. Bud Nosen 59. Heath Company 121. Perry Aeromotive20. Cannon Electronics 63. Hobby Market 123. Prather Products22. Carl Goldberg Models 69. Hobby Shack 128. R/C Hangar27. Coverlte 71. Hobby World 129. RC Buyers Club31. DA Enterprises 77. Indy R/C 136. Robart Mfg. Co.32. D&D Electronics 81. J.A. Enterprises 140. Royal34. Dremel Mfg. 88. Kavan 145. RPS Hobbies39. DaCa Model Products 90. K & B Aurora Hobbycrafts 146. R & S Hobby Products41. Edson Enterprises 94. Kraft Systems 165. Sterling Models43. EK Products 96. Lanier Industries 168. Techni Models (DJ's)47. Pitts Photo & Hobby 98. L & L Electronics 173. Vantec48. Fusite 100. Mark's Models 176. Tower Hobbles

PLEASE PRINT

NAME

ADDRESS

CITY .STATE ZIP

Mail Ihts coupon to; RCM Readers Service Dept.. P.O. Box 487. Sierra Madre, California 91024

VOID AFTER AUGUST 31, 1978

189

CALL TOLL FREE

PRICES

GOOD THRU

9-25-78SUPPLIES MAY

BE LIMITED

RADIO CONTROL

SYSTEMS

^Sxidii

28% OFF

H ofB

CHIPMUNK

L. 27.95

1.20.12

"Indg-^

36% OFF

CRAFT-AIR

HEAVY DUTY

HI-START

L. 39.95

1.25.57

RADIO CONTROL

SYSTEMS

NEW FROM WORLD

4 ehinnri, 3 ssrvot, Trammltter aktsdry iMtttriei Nicadt and charger inairborne syiteni.

L.S23g.OO I.S149.95

WORLD EXPERT MARK II

Lilt Indy

7 Ch OS (5 Servos) 464.95 279.007 Ch SS (5 Servos) 484.95 290.007 Ch DS (4 Servos) 439.95 263.00

7 Ch SS (4 Servos) 459.95 276.005 Ch DS (4 Servos) 399.95 235.00S Ch SS (4 Servos) 419.95 251.00

FLIGHT PACKS

7Ch.5seTvos S264.95 $166.957Ch.4setvos S259.9S St62.9S

SCh.4satvos $249.95 5157.96

SERVOS

S-10&S-11 S45.C0 $35.00Retract SS2.C0 S42.00

A-JUSTO-JIG CO.

MA Retracts-mains 11.95 9.95

MICHIGAN HOBBY HANGARSMALL WONDER

MICHIGAN HOBBY HANGAR

Quickie 28.95 20.25Quickie Bipe 35.95 25.17Miss Vintage 54.95 38.47Small Wonder 33.95 23.75

WORLD ENGINES KITS

Sndy32% OFF

MIDWEST

TWIN STICK

TRAINER

L. 49.95

1.33.97

32% OFF

CB

TRANSMITTER

TRAYGLASS HAWK

L. 19.95

V 1.13.57

33% OFF

M. H. H.

SMALL WONDER

L. 33.95

t. 22.75

V

^Ind^

30% OFF

K&8

3.SCC INBOARD

MARINE

L. 69.50

t 1.48.65 ,

COXSANWA

2Ch.,2sery(n.elldry.S99.9S S73.0Q4 ch. 4 servos, nicads $299.95 $199.95

6 ch. 4 servos, nicads 3369.95 S239.95

KRAFT

KP-3C dual stick... $219.00 S17S.9B

KP-5C dual stick... $375.43 S29S.Q0

KP-5CS single stick . S37S.43 S29S.G0

KP-7Cdualstick...SS1S.43 S399.00

KP-7CSsin9iestiek. $515.43 $399.90

NEW FROM KRAFT

KP4A dual stick, 4 channel, 4 servos,all nicatis 8299.95 $209.00

KP-6A dual stick, 6 channel, 4 servos,all nicads 5329.95 S::29.95KP-2A 2 channel, single stick, drybatteries S129.95 95.00

SERVOS

KPS-11.12,14& 15 . . .S44.9S $38.00KPS-ISH&16 S49.94 S4I.D0

MULLIGAN

WORLD ENGINES

DAS BOX FLY SERIES

20-L (low wing). .. .34.9520-W (biplane) 39.9510 mg-(motar glider) 24.9520-S (shoulder wing) 29.9515-H (high wing) . . .22.95Box Flv-19-25 34.95Box Fly Jr 24.95Miss World 49.95

Mr. Mulligan 47.95WE Cub 39.95

WE Champ 39.95Lil John (low wing). .59.95

KITSIndy's SpecialLow Prices

MK

Spirt St. Louis 96.50 73.50Zero 54.95 42.95

Mattlas 40 54.95 42.95

Manias 20 43.99 34.99

Curare 40 79.95 63.00

Curare 60 96.50 7P OC

Blue Angel Jr 54.95 47.JsHappy 20 S . .. .29.95 23.95Astro 20 45.00 35.50

miDweii

MIDWEST MODELS

LIIT.GIider 26.95 21.00Tri Squire 29.95 23.50LIIT.Squire 22.95 17.90Pitts Spec 94.95 74.00Cardinal Squire.. .84.95 66.00Strikemaster 69.95 54.50Cessna Cardinal.. .29.95 23.50

MachI 94.95 74.00Das Lil Stick 32.95 25.70Sweet Stik 39.95 29.00Chipmunk 29.95 23.50Attacker ,39.95 29.00New Hawk

Glider 139.95 104.00

Silent Squire... .39.95 29.00

BUD NOSEN MODELS

%A Aeronca Champ. .99.95 84.00Cessna310 169.95 135.96

Citabria 99.95 84.00

GereSport 129.95 110.00Jenny 129.95 110.00Mr. Mulligan 139.95 112.00J-3Cub 119.95 95.99

Trainer 79.95 65.00

VfE

INDY ENGINES

CIPALLO

.09 R/C. 18.95. 14.93

.09 Throttle 3.50 2.98

MILLS

0.75 Diesel.. .19.95

1.3 Diesel 28.95

15.95

19.95

CDMO

COMO

40 R/C w/miiHIer&S.T. Garb ..69.95 43.50

OS MARINE ENGINES

OS lOSch . .37.95 29.00

OS 20 49.95 38.50

OS60 RSR .139.95 108.

QS6S RSR .142.95 110.OS 45 RSR 109.95 84.50

NEW OS ENGINES

LESSMUFFLERS

60 RSR.. 136.50 105.0065 RSR.. 142.95 110.0040 SR RV .. 82.95 64.0010 FSR-S... 23.95 18.00

10FSRRC .30.95 23.50

15 STD.... 31.95 24.50

15 RC 37.95 29.00

20 STD .. . .32.95 25.00

20 RC 39.95 30.50

25 STD 34.95 26.98

25 RC 41.95 32.0025 FSR STD. 51.95 40.00

25 FSRRC .57.95 44.50

30 STD 42.95 33.00

30 RC 47.95 37.00

35 STD 43.95 33.50

35 RC 49.95 38.50

40 STD . . . .59.95 46.00

40 RC 72.50 55.9745-H 94,95 73.00

45 FSR RC .99.95 77.0040 FSRRC .87.95 67.50

6GBHRC ..99.95 77.00

60 FSR RC 119.95 92.00

60 FSRRCW/Perry Pump&Carb .. 149.95 115.00

WANKEL . 109.95 84.50

60 FS .. . 199.95 139.95

0S36.. 117.50 90.00

COMO

SUPERTIGRE ENGINES

X-15RC .. .59.95 48.00

X-21 RCSch.69.95 54.00

X-21 Fl RC Car,74.95 57.

23 STD . . . .36.95 28.00

•35 STD 39.95 30.50

•35 RC 47.95 37.00

G21/35 STD. 53.50 41.30G21/35RC .59.95 46.00X-40A6CSch.W/Rear

Valve 81.95 63.00

G60FIPP..90.9S 70.00

G60 ABC RC 99.95 77.00X-45FIRC W/Rear

Exhaust.... 83.00 64.00

G60BHW/Pump&Caib 112.95 87.00

G60 ABCW/Pump&Garb 121.95 94.00

X-60FISP. 125.00 99.95

• Denotes Combat with PP

SUPERTIGRE ENGINES

WITH MUFFLERS

G71 RC... 105.95 81.006QFIBBRC 74.95 57.0023 RC 53.95 41.5046 RC 68.95 53.00

K&B (VECO)ENGINESList Indy

Veco-IOstd .. . 40. 29.00

Veco19R/C . . 47. 33.00K&B 3Spln.br. 30. 21,00K&B 40 R/C. .. 62. 44.00K&B 3.5 R/Cw/muffler

67. 47.00

K&B 3.5 inboard marine

69. 49.00

K&B4.9FRstd 95. 66.00

K&BS.BFRstd 95. 66.00

K&B6.5RSII. . 92. 64.00K&B 3.5 Ontbrd .'99. 69.00

K&B 61 R/C... 85. 59.00

INDY R/C, 10620 N. COLLEGE, INDIANAPLIS, INDIANA 46280

SIG

Super Sport 19.95 15,95kllpper 20.95 16.75S. Chipmunk 59.95 46.60SigP-51 57.95 45.06Kadei 34.95 27.95

Kommander 39.95 31.00

Kougar 44.95 35.7526.00 Smith Mini plane 49.95 39.9529.00 Zlin Akrobat 54.95 43.9915.95 Yak 18 73.50 59.00

Z1.9S Citabria 57.95 45.00

18.00 LibertySport 54.95 51.5027.00 RyanSTA 73.50 59.0018.95 CIpd Wing Cub 39.95 31.00 pump • 2 oz. per revolu- aiy as with most hand36.00 Skybolt 52.50 49.95 tion so you can partially pumps. These manual36.95 Piper J-3 ,...39.95 31.00 (ill tank if you desire. hand pumps are always29.00 Doufalerll 24.95 19.95 Extra heavy duty gear ready to go ■ no baneties29.00 Cessna ISO 69.95 55.00 train for rugged service. ta worry about. List -47.00 Minnow 27.95 22.25 Fast pumping not necess- SI 2.50. Indy - S8.95.

Sl.OO handling on all orders. Prepaid domestic orders postpaid; foreign orders allow S10.00 (excess refunded)Orders - check, M.G. or C.QD. Also, Bank Americard or Master Charge (bank number) Iml. Residents add 4% Tax

KITSIndy's SpecialLow Prices

AIRTRONICS

List IndyGere Sport 39.95 30.50Square Soar 24.35 19.00Cadet 36.95 28.00Questor 34.95 26.50

Grand Espirit...129.95 95.00Super Questor... .39.95 30.50Aquila 69.95 54.00Olympic 11 49.95 35.95

ACE

Pacer 19.95 15.50

Oicks Dream 11.95 9.95AceHlsli 19.95 15.50Up-Start 17.95 13.75All Star 24.95 19.95

Whizard 18.95 14.75

Maeh None 19.95 15.95

TRAINMASTER

ANDREWS

S-Ray 34.96 27.95ARay 44.95 35.95H Ray 39.95 31.95Sportmaster 69.95 55.95Mini Master 44.95 35.95

Trainmaster 52.95 42.95Aeromaster Too ... 74.95 59.95

ASTRO FLIGHT

EleetraFiy 24.95 17.96Bushmaster 44.95 33.75

Fournier RF/4 44.95 33.75Malibu 29.95 22.50

Monterey 39.95 29.95

DIRTV BIRDY

BRIDI

List IndyShrike 184.95 129.99

Brown Racer . .134.95 102.00

Chipmunk 124.95 93.00Dirty Birdy(bals8).84.95 63.95Dirty Btrdy 40 . . .59.95 45.99Tweedy Birdy.. . .43.95 34.50Sportster 39.95 31.00Trainer 10 27.95 21.50

Trainer 20 34.95 27.00

Trainer 40 54.95 42.00

Trainer 60 62.95 49.00

Basic Trainer ... .39.95 31.00

15-500 39.95 31.00

SunFli4-20 29.95 23.00

Quickest 200 24.95 19.00

Quickest 500 42.95 33.00

Super Kaos40 . . .55.95 43.00Super Kaos 60 . . .69.96 54.00Kaos 66.95 52.00

Sirus Lockheed. 134.95 102.00

VfC

KITSIndy's SpecialLow Prices

CASS ENGINEERING

List indyPulsar Bipe 95.00 79.95

CALL TOLL FREE

1-800-428-4682Indiana Res.-317-846-076

CRAFT AIR

Windrilter 44.95 33.75

Sailaire li29.95 97.50SD-100 59.95 44.95

Buehl Pup 34.95 25.50

CMC MODELS

'M Corsair 31.95 23.95

%AZero 31.95 23.95

SR'FALCON

GOLDBERG MODELS

Ranger ARF . . 23.95 19.00

Sr. Falcon 59.95 47.95

Falcon 56 MKII . .. . .39.95 28.50

Skylane 62 59.95 47.95

Jr. Falcon R/C ... . 13.95 11.00

Vi A Skylane 15.95 12.95

Jr. Skylark 14.95 11.95

m

PETE

0 AIR CAMPER

HOUSE OF BALSA

Miss Data 39.95 27.99

Pietenpol 49.95 39.35

%APietenpol 22.95 17.99P-51 27.95 21.95

ME-109 27.95 21.95

P-3g 27.95 21.96

Chipmunk 27.95 21.95P47 29.95 23.99

FW-190A 29.95 23.99

LANtER MODELS

Jester II 73.50 51.50Invader 84.50 59.00

Scamp 52.50 36.75Comet II 58.50 40.95

Cessna 46.50 32.75

Pinto 46.50 32.75

MARKS MODELS

Sunny (Bipe) 32.95 24.75Windward 32.95 24.75

Windfree 44.95 35.00

Wanderer 19.95 15.95

Buschwacket 44.95 35.00

MILE HIGH MODELS

Joystick 16.35 14.99Super Joy Stick 36.95 25.95

GLUE

& FILM

ADHESIVES

List IndyWillhald R/C 56 . 1.50 1.25GMPStyroSiik.. 2.30 2.00Hobby Poxy II .. 4.00 2.99Hobby Poxy IV.. 2.00 1.75Wilhold Aliphatic 1.80 1.50GMP 6 mn. Epoxy 5.95 4.75GMP last 5.50 3.75

Devcon 5 mil. Ig,. 2.50 1.85Devcon 5 mn. sm. 1,35 1.00

Devcon 5 mn. 9az.5.80 3.99

Devcon slo cure.. 5.80 3.99

Hotstulf 3.50 2.40

Blue Line H.S. .. 4.95 3.50

Giant Zap 3.50 2.40X-30 Adhesive . . 3.25 2.40

Amhroid4oz.. .1.25 1.10Ambroid 'A oz 55 .55

Super Cement.... '5 . .65Blue Goo 2.95 2.59

Glaskote >4pt 2.95 2.75Glaskote Thinner.. .2.55 2.25

COVERING MATERIALINDY SILK

lyd.pkg 3.25 2.752yd. pkg B.50 5.0Q

COVERITE

Super 38x47. .. 7.75 6.20Silkspun 7.75 6.20Permagloss 9.10 7.25Day-glo permaglossorange, yellow, olive drab &aluminum 9.95 7.95

Camouflage 114 and 2" scale9.95 7.25

Balsarite K pt... 2.95 2.75

MONOKOTE

Opague 9.00 5.50Transparents 9.00 5.50Meullic 10.50 7.00plain trim sheets . 1.19 1.10Checkerboard trim1.59 1.50

SOLARFILM

Opaque 7.80 5.00Transparent 9.00 6.50Metallic 10.00 7.00

MIDWEST

MicioLon 1.95 1.75

8UTY - FLEX DOPE

22 Colors

Quarts-colors 5.95

Quarts-clear 4.95

Gallons-clear 10.95

Gallons - thinner 6.75

GLIDER ACCESSORIES

AIRTRONICS.Std. launch pail.34.95 27.99HD launch pail .36.95 26.00

CRAFT AIR

Del. Hi Start 39.95 31.00Std Hi Start 34.95 25.00Super HO Hi.... 59.95 42.00Para Pod 09.95 07.00

ASTRO-FLITE

HD Hi-Start...41.95 31.95(real heavy duty)Astro-start 39.95 31.00

c

BOATS

& CARSJERGSEE CARS

CARS WITH RADIOS

MK-8B 177.50 142.00Challenger.. 187.50 150.00Alfa 226.95 181.00Vette 215,95 172.06

CARS LESS RADIO

MK-8B 55.00 44.00Challenger 65.00 52.00Alfa 97.50 78.00

Vette 87.50 67.00

CARS LESS RADIO

AND ENGINEMK-8B 27.00 21.50Challenger ... .32.00 25.50Vette 50.00 40,00

JEROBEE - BODIES

MK-SBBody . 7.95 6.50Porsche 4.95 4.00

VW Bug Body. .12.95 10.50Vette Body ...12.95 10.50

ACCESSORIES

Tank heal sink 2.50

wing with daeals 2.95brake kit 1.95remote tank kit 2.95

Aluminum flywheel 2.95mount lor Tee Dee ... .6.95Bumper 2.49Chassis Frame 3.95Lexan Chassis frame 7.95Starter Rebuild kit 1.60Eng. rebuild kit 7.55Rear Axle kit 1.49

Clutch shoes 00

drive sheftw/ret 69

HUGHEY

List Indy20 Rigger 100.00 65.0040 Rigger 110.00 93.5019 Hydro 77.00 67.00

PUMPS

STARTERS

SAIL BOATS

Blue Sonic 900 129.95

Indy special S99.95

STARTERS

Std. Sullivan. . .36.95 26.99

Del. Sullivan.. .39.95 28.99

Sonic Tronic.. .38.50 27.00

Kavan 45.00 32.00

Astro-!4A 16.95 13.50

FUEL PUMPS

Sonic Tronics MK 11

Electric.... 14,95 11.75

HAND PUMPS

Du-Bro 10.95 8.50Six Shooter , , , 10.95 8.50

HELICOPTERS

DUBRO List IndyShark60 .. .325.00 275.00

Tri-Star. .. .229.95 189.00

ACCESSDRIES

Conversion kit 75.00

Update Kit 34.95Blade Set 15.00

Tri-Star Blades 12.00

Alum, paddles 10.00Fiyhar 6.00

KAVAN

Bell Jet 400.00 320.00Alouette II.. 200.00 175.00ACCESSDRIES

Instrument panel 12.00T.R. blades 3.00

Reg. main blades 18.00Expert main blades . . .19.95Nylon tall cone 5.95Camp, window set. , . .20.00window channel 2.95

RETRACTS

ROM-AIR

2 gear mains.. .85.00 57.753 gi. firewall..114.00 79.953 gr. belly ...114.00 79.95pressure gauge 13.50Freon 2.75I'^oz.Dil 1.65

tine coupler 1.90quick disconnect 2.00

GOLDBERG

2 Gear 14.95 10.50

3 gear 24.95 17.50

POWER PANELS

DAE

Dual range... .24.95 18.00Mini panel.... 15.9511,00SerieslV 34.95 24,95

Std. panel 18.95 14.95

STEVE MUCKS

Lil Lightning . .48.95 38.95Buschwacker .109.95 74.95

prices subject to change

without notice

PRICES

GOOD THRU

9-25-78

SUPPLIES MAY

BE LIMITED

^Sndu

33% OFF

COVERITE

GLASSKDTE

GLASKOTE

THINNER

L. 5.50

34% OFF

SONIC TRONICS

ELECTRIC

FUEL PUMP

L. 14.95

1.9.87

^Indy"^40% OFF

CAL-STRIPE

TAPE

1/4" WIDE

^ L.3.69,il.2.21

^Sndq40% OFF

CAL-STRIPE

TAPE

3/32 & 1/8

WIDE

L.2.69

1.1.62V.

/^Snd^35% OFF

CRAFT-AIR

BUTTERFLY II

L. 49.95

i.32.47

"Snd^

28% OFF

COX

CESSNA

CENTURION

L. 54.95

1.39.56

INOY R/C, 10620 N. COLLEGE, INDIAIMAPLIS, INDIANA 46280

FRANCHISE DEALERS

As rated tnanv times here - thefisnchiie dealers are exclusrve in

the county in which they reside.

Enry month so iar the numherlas grown. Oversees dealers ateiitvlttd to inquire,

Tell ui whet local political huildingblock you want lor your exclusive.

ANNOUNCEMENT - Indy willsoon have its own 3 channel R/C

iND¥system on 72 MHZ.

ARIZONA

Hobtry Den, Inc.3347 W. Greenway RoadPhoenix, Ai. B5023ph.602-993O630

Hobby Haven27SI N.CampbellTucson, At. SS719Ph; 602-325-0117

ARKANSASFamily Hobby & Toy CenterRoute S, Box 84 BConway,Ar. 72032

Ron's Hobbies

300 N. Wright StreetSiloam Springs, Ar. 72761

Cash Auto Supply, Inc.P.O. Box 155Cadi, Ar. 72421

CALIFORNIABay Hobby1448 Cary AvenueSan Mateo, Ca. 94401

Oava's Custom Models1844 W.GIenoaks Blvd.

Glendale.Ca. 91207ph. 213-240-5810

Root's Hobby Hut6038 Telegraph Ave.Oakland, CA 94609

Ph: 415-6554543

Active Hobby717 E. Main StreetSanta Marie, Ca. 93454

The Hobby Shop9295 12th, Avenue

Hanford, Ca. 93220ph. 562-5571

COLORADO

Musick Orug& Hobbies309 E. Fontaneio St.

Colorado Springs. Co. 80907ph. 303632-2635

FLORIDA

ASJModels, Inc.Coialwood MallCape Coral, Fl. 33904ph. 6136426858

Action Hobbles4301 A, North Dixie Kwy.Ft. Lauderdale.FI. 33334ph. 305661-5611

The Hobby House, Inc.360 U.S. Hwy. 17-92Maidand, Fl. 32751ph. 305647-3442

Ocean Hobby323 N. Federal Hwy.Boynton Beach, Fl. 33435ph. 9724406

GEORGIAAtlanta Hobby Center8125 Rosweil Roed, N.E.Atlanta, Ga. 30326ph.404-255-9033

Country Cloth Shopflt 4, Teamnn RoadGriHin.Ga. 30223ph.404-2276015

ILLINOISBob's Hobby Hut68 Main StreetQswego, 11. 60543ph. 554-9243

Lake County Hobbies3102N.Sheridin RoadWtukegan.ll. 6DD85ph. 3126624544

Wings & Things, inc.1122 BroedweyRoekfotd.ll. 61104

INDIANAABC Hobby Ctalt2155 E.Morgan AvenueEvansville, In. 47711ph. 812477-9561

Craft Si Hobby House324 Main StraetVincennas, In. 47591

Frank's Hobby Shack4954 E. Robin CourtRolling Prairie, In. 46371ph. 219-7784670

Hobby Hangar509S.Monroe StreetHertford City, In, 47348ph. 317-348-1931

Hobby HutHuntington & Main St.N. Webster. IN 46555

Ph; 349634-2236

Hobby World154-13AW. Hively AvenueElkhart, In. 46514ph. 219-293-3715

Hobbyland343 Lincolnvray WestSouth Bend, In. 46601ph. 219-2676160

Kirk's Hobby Shop117 E.filaln

Muncie, In. 47305ph. 317-2824121

Wings N Rails, Inc.1824E. htain Street

Pleinlield, In. 48168ph. 3176396383

IOWA

Alrmotion Radio Models

Fitn St.

Colwell. lA 5QS2D

Ph: 515-228-7861

Family Craft & Hobby2034 S. Saint Aiibin

Sioux City, la. 51106ph. 712-276-7088

A-Z Hobby. Ltd.1314 Army Post RoadDesMoines. la. S03IS

KANSAS

Del's Body Shop607N.PennObeilin, Ka. 67749ph.91347S<2624

The Modeler Hobby Shop1726 South Hillside

Wichita, Ka. 67211ph.31B681-2941

LOUISIANA

Ron's Hobbies713 E. McNeesaLake Charles, La. 70605ph. 3184786651

MAINE

INDY R/C1-800-428-4682CALL

TOLL FREE

Hey - we're celebmling summertimein Naplbwn with Perry carbs that'rn pur Como 40's. Just add S3JI0to listed engine price for Como 40with Perry or they can be purchasedseparately - L: S13.5D I; $11.00.ST catb separata - L: S12.8Sl;S10.S0.

Also just In is the ARTG CondorGlidav - L: S196.9S I: $159.95.

\

.IkOIAkA RESIDENTS call 13171 146 0)86.

10620 N. COLLEGE AVE., INDIANAPOLIS, IN. 46280

PetsS Pastimes6 Central StreetBangor. Me. 04401ph. 207-942-9346

MASSACHUSETTSBill's Hobby Supplies600 N.Main StreetE. longmeadow. Ma.ph.413-736-7711

Most's Hobby CenterUpper Level Valley Mall

Hagerstown.MD 21740

Ph:3Q1-SB2-35S0

MICHIGAN

Avco Model Supplies1685 Dyson StreetMuskegon,MI. 49442ph. 616-726-3400

Batry't Hobby Houte3535 lOlh. AvenuePort Huron, Mi. 48060ph. 313-982-1237

Hobby Center

298 S. MichiganHowell, Mi 48843

Ph: 5466955

John's Radio & TV Ctf.US 31 HwyBayshote, Mi. 49711

The Hobby Shop2307 N. 5th St.Ni1es.Mi. 49120

U.P. Model Air326 W. Genesee St.Iron River, Mi. 49935

Sugar Plum8716 Shaver Rd.

Ponage, Ml 49D82Ph; 616-323-3450

MINNESOTA

Mac's Models, Inc.1322 N. Rice StreetSt. Paul, Mn. SS117ph. 6124696060

Wicklund's Hobby HouseRoute 1Lake Lillian. Mn. 56253

MISSISSIPPICreetive Sources1002 Jackson Avenue

Oxford. Us. 36655ph. 601-234-2475

H S B Models319W. MainTupelo, Ms. 36601ph. 601644-7946

MISSOURISho-Me Hobby Center1239 E. Republic RoadSpringfield, Mo. 65BD7ph. 417-667-2327

MONTANA

Viking Hobbies. Inc.1745 E.MainBillings, Mt. 59101

NEW HAMPSHIRE

Hobby Hill1 Cannon DriveNashua, NH 03060ph.668-3576

NEW JERSEY

Frank's Hobbies26 Fairfleld Rd.Fairfield.NJ. 07006ph. 2ai-227-1978

NEW YORKCustom Hobbies

765 BroadwayKingston.NY 12401

Hobbies Galore

09 Central AvenueLancaster, NY 14066ph. 7166816567

Jim's R/C HangarRl 4. Box 4-Canton RoedOgdansbutg.NY 13689ph.315493-2580

King Arthur Ceramics SHobbles, Co, Bridge Rd.Hudson Falls.NY 12639

ph. 518-747-5818

NEW YORK Cont'd

Thompson Outboard S & SUpper East StreetOneonu.NY 13820ph. 607432-5368

Ray's Hobby Supplies466 Jerusalem AvenueUniondale.NY 11553ph. 5164864047

NORTH CAROLINA

6Si J Hobby Entetprisa4909 Western Blvd.

Raleigh.NC 27EQ6ph. 919-8514492

Thornton's HobbiestOGN.Main StreetFour Oaks, NO 27524

Edros Hobbies1318 Lakeside DriveWilson, NC

NORTH DAKOTACrafts Etc.

Northpon Shopping Ctr.Fargo-ND 58102pl>.'701-293-7121

McGlffins. Inc.1228 9lh Ave. South

Grand Forks. ND 58201ph. 701-7726311

Hobby World431 W. VlllardDickinson, ND 58601ph. 701-2254703

OHIC;American Modeler2 Berea CommonsBeiea, Oh. 44017ph. 216626-3068

Dad's Toy Shop129E.Auglaize StratiWapakoneta, Oh. 45695

Hobby Hut, Inc.9753 Ravenna Rnad

Twinsbuig, Oh. 44087ph. 425-7353

Hobby Road Hobby Shop2483 E. Dublin-GrandvillaColumbus. Oh. 43229

Lafayette Escadrilla Hobby14145. AvenueToledo, Ohio 43609ph.4ig4B56739

Lighthouse Hobby Supply507 E. North Street

Prospect, Oh. 43342ph.Et4494-2110

Lima Radio Control Spls.307 N. Cole StreetLima. Oh. 4SB05

ph.41B-229-5n7

Paul's HobbiesRouted, Box 129Lucasvllle, Oh. 4SB4Bph. 614-259-5296

S & M Print Shop7154CaNarY Road S£Amsterdam, Oh, 43903ph. 614-5434024

The Model Hanger321 N. MarketGallon, Oh. 44833ph.419458-7694

White Beech Tree Hobbiet

ttdPark Ave. West

Mansfield. Oh 44902ph. 419-5264093

F. L. Yocum Hobbies7051 Slate Street 119Celine, Oh. 45822

$1,00 Hatsdiing on all orders. Prepaid domestic order post paid; foreign order allow SI 0.00Orders-^eck. M.O. or C.O.O.-also BankAmeriiard or Master Charge (bank Number) 4% IND. RES. TAX

We are filling orders on Comoparts and Capilln cttbt.

JIM GOAD

SEZ:

Our Indy Film MK II is the best

INDY FRANCHISEHOBBY DEALERS

lilm you have ever tried and thecolors match K and B epoxypaint

Jim Goad

OHIO Cont'd

Xenia Hobby & Craft Ctr.195 Bellbrook AvanuaXenia, Oh. 4S38Sph. 513-376-9928

OREGONCrabtree Store

37626 Crabtree DriveCrabtree. Or. 97335

Chezem's Enterprises2495 Commerieal NESeism, Or. 97303ph. 503-5916276

The Hobby Shack

1008 S.Main

Uilton-Freewater, OR 97662

Ph:938-7229

.Strictly R/C7868 SW Capitol Hwy.Portland, Or. 97219ph. 503-244-3356

PENNSYLVANIA

Hobbies Galore of Pa.Great Slhin, Shopping Ctr.Bridgeville.Pa. 15017ph.412<221-26aO

H 6 S Sales & Service

Rd.No.1.Box44Q-AIndiana, Pp. 1S70Iph.41245361St

Laurel Shop176 Main StreetBtookville, Pa. 15825

The Sliver Mine

301 Oak Spring RoadWashington. Pa. 15301ph. 412-2286470

SOUTH CAROLINAAndy's Hobby ShopHanison BuildingAirport HeightsWalteiboro, SC 29488ph. 803-549-7825

Creetive Pastime Shop1011 Third Avenue

Conway.SC 29526

TENNESSEE

Myers Auto & Farm Pain105 Elmore RoadCtossville.Tn. 3B5SSpli.614484616B

TEXASG.T, EnterprisesOllon Rl. FBC BIdg.Plainvitw.Tx. 79072ph. 806669-3541

The Hobby Habit2290 Bandera Road

San Antonio, Tx. 78228ph. 4346226

Hobbies Unlld.3031 Woodland Hills DrlvtKingwood.Tx. 77339ph. 713-358-2224

Mercantile Park Hobbies

3727 Dllldo, Suite 138Dalles, Tx. 75228

Sight & Sound715 PorterDumas, Tx. 79029ph. 806-935-7422

Tee Pee Hobby Shop420 N.MainBorger, Tx. 79007ph. 273-7037

VERMONTThe Hobby MartSmith RoedWilmington, Vt, 05363ph, 802464-5059

VIRGINIAKilowatt Kege, Ine,Waterlick PlazaLynchbutg.Ve. 24502

iNDYWASHINGTON

Bill's Hobtry Town11112 Pacilic AvenueTacome.Wa, 98444ph. 206-5316111

Kilsap Hobby SupplyPoulsbo Jet & Hwy, 3Poulsbo.Wa. 98370ph.206-779-7676

Hobby World, Inc.70 Front St,

Is:aquah,WA98027

Stewart Enterprisesat UcCarey's TV & Radio429 S.Chelan StreetWenatchea.Wa. 9B801ph,6096E36Z3Z

WEST VIRGINIA

McCoy's. Inc.

Box 51

Smilhvllle, WV 26178

Mountaineer Shop117 Court StreetRipley.WV 25271ph. 3046726544

WISCONSIN

Happy House Gift Shop216 S. Knowles AvenueNdw Richmond, Wi.ph, 715-246-2184

Lake Geneva Model Center

726 1/2 AnnLake Geneva, Wi. 53147

fl.C. Hobbies, Inc.18305 W. Lisbon Rd.

Brookfield.WI, 53005

iND¥CANADA

A.6,C, Model Craft34 Meiiitt Street

St, Catherines, Ontario,Caoada

B & H Hobby Supply3D Georgian DriveBanie, Ontario.Canada

Calgary llobby Supply Ltd.3920 Edmonton TrailCalgary.Alberta,Canada

Elgin Cycle 6 Hobby Cents*441 Talbot StreetSt. Thonias, Ontario,Canada

Royal Oak Hobbles4454W.S8anich Road

Victoria. British Columbia,Canada

Skyctall Associates139 York RdsdDundas, OhUtio,Canada

Smart's Hobby Supplias183 King Street WastBrockviile. Ontario,Canada

TJ6lke& Hobbies3011 Pando^ StreetKelawni, British Columbia,Canada

PUERTO RICOHobbles Unlimited

Ave. Jesus T. Pinero No. 1176

Puerto Nuevo,Puerto Rico

SOUTH AMERICA

P & L HobbiesMedellin - ColombiaS. America

10620 N, COLLEGE AVENUE - INDIANAPOLIS, INDIANA46280

ORDER INSTRUCTIONSSI.00 handling on all orders. Prepaid domestic orders postpaid. Foreign ordersallowSIO.OO. We will take your check or money order to ship your order C.O.D.Also, we honor BankAmericard (VISA) or Master Charge (Bank Number).INDIANA RESIDENTS INCLUDE 4H SALES TAX.

INDIANA RESIDENTS(317) 846-0766 INDY R/C 1 • 800 - 428 - 4882 CALL TOLL FREE

INDY R/C 1 - 800 - 428 - 4682 CALL TOLL FREE

CURARE

MK's all balsa kit of Hanno Prettner's famousCurare. Kit comes complete with hardware,spinners, and gas tank. 40 size L: S79.5Q;I: $63.00.60 size L:$98S0; I: 79.00.

ZERO FIGHTER

This ZERO, like the original ZERO, is a superacrobatic performer. Takes a 40 size engine,L; $54.95; I; Special $42.95.

ITB

CONDOR

CONDOR

The Condor has a wing span of 93'A". its fuselageis fiberglass — T-tail — with complete elevatorpush rod and bearing assembly. Completelyfinished. This glider can be disassembled inminutes. Wood and paper covered foam wing andstab. Fly a Condor and really go first class.L: $199.95 I: 8159.95

1. COMO 40 - Twin ball bearing, cast aluminum piston, chromering, carburetor and muffler.L: $69.95 I: $43.00. U/C versionless muffler. L: $55.95 1:33.95

2. US-1 SERVO - similar toIndy US-2 servo. Dunhammechanics with dual racks.L: $28.95 I; $20.95. WorldConnector: $1.00 - Kraft Connectors; $2.00.

3. US-2 SERVO - OS Mechanics,Signetic IC 544. For use withsystems like Futaba, Kraft, Stand

ard, and World. Positive pulsesystems. Mltsumi connector.L: $23.95 I: $16.95.

4. TRAYS - ARMS - PENCELLSSnap-in servo tray for US-2servo. L; .99 I: .69. Round

output arms for US-2 Servo.L: .50 I: .35. Panasonic pen-cell nicads witii tabs. New (4)ea. $1.80 • $7.20; (8) ea.$1.65-$13.20; (12) ea. $1.55 - $18.66.

5. INDY FILM (MK II) - Newcolors like K & B epoxy. Solids:wh., yel., grn., org., bl., navy

blue. L: $7.50/roll. Intro: $3.99 or 3 rolls for$9.99.

6, 6 AMP BATTERY - Indy 12 volt 6 amp. hr.gell cell. Charger is the 24 hr. type only.L; $19,95 I: $15.95, Battery only: L: $29.95I: $21.95.

7. POWER PANEL - Mount the Indy PowerPanel in your tool box. Operates from 12v.and services your engine starter, fast fieldcharger and glow plug. L; 834.95 I: $23.50

8 - 9. SG RACE CAR/ENGINE - SG Ferrari RaceCar comes with the ST X-21 Schnuerle engine,flywheel, and clutch assembly. L: $199.951:8159.95.

MATTLAS 40

This is the pattern ship designed by WolfgangMatt. This is an all balsa kit taking a 40 sizeengine. L: $54.95; I: $42.95.

- M

MILLS .075

MILLS .075 - All time sentimentalfavorite in small diesels. Excellentfor small R/C. Complete with tank.List $19.95; Indy $15.95.

CAPILLO .09 R/C

CAPILLO .09 R/C - Italian glow engine which takes a 7x3 or 7x4 prop.List $18.95; Indy $14.93.

MILLS 1.3

MILLS 1.3 • The classic Mills 1.3

cu. in. diesel. Reach back into 1954and power your oldtlmer with a realoldtimer. List $29.95; Indy $19.95.

HAPPY 20

All balsa trainer for the beginner who is looking for a quick and easy 3 channel buildingproject. It takes a 20 size engine. L: $29.95;I: Special $23.95.

Whenever

the champions fly so doesMRC-webra

Wotroang Matt

Hanno Preilner

First Place —1975, 1977 World ChampionshipFirst Place — 1974, 75, 76, 77 Circus,

Circus Tournament of ChampionsFirst Place —1977, Canadian NationalsFirst Place —1974, 75, 76 U.S. Nationals

Year-after-year, in competition after major competition,whenever the champions compete, MRC-Webra comesout on top. There has never been a pattern engine thathas so consistently compiled such a brilliant string ofmajor victories. Fliers like Hanno Prettner reigningWorld Champion and Wolfgang Matt 1975's WorldChampionship winner, who have their choice of anyengine in the world, choose MRC-Webra for their mostdemanding challenges. They've come to depend on thesolid idling, minimum vibration and of course, its big,responsive power.They know these engines are advanced designs that

are built to stringent specifications. Take the winning.61 for instance. Here Schneurle porting maximizes

power output at over 1.2 HP. Our newest design has asturdy connecting rod that transfers this power to amassive 17 mm crankshaft. Cylinder head clearance topiston is carefully maintained at its optimum spacing.The result: power and dependability to win the big ones.

This type of reliable, innovative construction has become a standard In the industry. And it can be foundthroughout the MRC-Webra line. Like in our big .90 with2.5 HP output at 13,000 RPM; or the rear exhaust .109developing .38 HP at 19,000 RPM . . . and up to .53 HPat 22,000 RPM with Power Plus Silencer. Even the .109marine version is unique with a sophisticated, built-ingear reduction system to boost torque to the optimumlevels required for boating.

Whatever the size or type of engine you need, ifyou're ready to fly with the best . . . ask your hobbydealer to show you the line the champs use.MRC-Webra, Engine Of Champions. Send$1.00 for your new MRC Model AircraftProducts Catalog.

MODEL RECTIFIER CORPORATION , 2500 WOODBRIDGE AVENUE, EDISON, N.J. 08817