10 hp hovercraft
DESCRIPTION
10 HP HovercraftTRANSCRIPT
http://www.instructables.com/id/10-HP-Hovercraft/
Food Living Outside Play Technology Workshop
10 HP Hovercraftby mickydee on April 11, 2011
Table of Contents
10 HP Hovercraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Intro: 10 HP Hovercraft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 1: TOOLS AND MATERIALS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Step 2: BUILDING THE HULL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 3: VACUMN BAGGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Step 4: Underside of the hull is now complete . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 5: MAKING THE DUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Step 6: MAKING THE MOTOR SUPPORT POST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 7: MOUNTING THE DUCT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Step 8: THE PROPELLER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Step 9: BUILD THE AIR CHAMBER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 10: Install the air chamber . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 11: THE RUDDERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Step 12: MAKE IT LOOK GOOD WITH A BODY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 13: THE SKIRT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Step 14: THE BIG DAY THE TEST DRIVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Step 15: A SHORT VIDEO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Related Instructables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
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Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
http://www.instructables.com/id/10-HP-Hovercraft/
Author:mickydeeMy name is Roland MacDonald, my friends call me MacI am a retired but not bored engineerMy great joy is my workshop, a two car garage with heat and air.I am a private pilot with 1800 hours flying timeI have built four Kit planes and restored two Cessna aircraftMy last contact with electronics was in the vacuum tube world.I am really enjoying the new transistor world.
Intro: 10 HP HovercraftI was looking for a project that my Grandson and I could build. together. We decided on a hovercraft after watching a TV special. Knowing absolutely nothing abouthovercraft we researched the web on the subject and found the Universal Hovercraft website to be the best source.We had an old 10 HP Briggs horizontal shaft electric start engine from an old riding mower that looked like it would fit the bill. We bought the plans for their UH10F craft.We liked it because it only uses one motor. Most hovercraft use a separate motor for lift and thrust. This one directs approximately 1/3 of the thrust air to provide both liftand inflating the skirt. Most of the materials could be found at the local builders supply.The only parts we needed to buy from Universal Hovercraft were the Plans, propeller, propeller hub, and the skirt material. Although it busted our $500 budget wedecided to purchase their materials kit which included all the epoxy,fiberglass , screws, and glue. The skirt is the heart of this thing and we didn't want to save penny's onsomething this critical. It was a fun project for the both of us. It would be a great Father and Son project.
Step 1: TOOLS AND MATERIALS LIST
Tools required
Table saw to cut 4 X 8 Foam and plywoodKeyhole saw or saws all to cut openings for air ductsScroll saw for plywood duct and body peicesShop vac for vacuum blanketTwo to four saw horsesSeveral plastic squeegeesBasic hand tools
Materials list
From home depot cost about $80For the hull1 sheet 1" white Styrofoam4 sheets 2" blue construction foam 4 x 84 sheets 1 /8" plywood (doesn't have to be marine)2 12' lengths 1 x 2 lumber( pine is fine)
Hardware kit from Universal Hovercraft $349This kit contains every little thing you will need to complete this project includingPlans, fiberglass, skirt, glue , skrit screws,epoxy, and a 24' steering cable
DRIVE KIT from Universal Hovercraft $159Includes propeller, hub, and bushings
MISC. $20Small roll plastic sheeting 2 to 4 millsPaint
Total cost of the project was around $600 plus the cost of a new or used motor.
http://www.instructables.com/id/10-HP-Hovercraft/
Image Notes1. Wire screen attach points2. Lift handles Two people can lift it easily unto a trailer
Step 2: BUILDING THE HULLCut the 2" foam to make a 5' X10' rectangle. This dimension will provide a floatation of 600 lbs. If you need to support more weight double up on the foam. It won't weightmuch more. Skin the top side with the 1/8" plywood. Cut and glue the plywood strips to the foam, and then glue the 1 x 2 strips to the plywood. With a scroll saw cut thetwo holes for the lift, and skirt air.Glue a 6" wide piece of plywood across the hull where you will instal the motor support post.
Image Notes1. This wood structure provides the inside attach points for the skirt2. Hole cut for the lift air3. This hole provides air to inflate the skirt4. Outside of skirt attaches here
Step 3: VACUMN BAGGINGThe underside of the hull must be waterproof . The entire underside is covered with fiberglass cloth and epoxy. This can get a little messy if you are not careful. It isimportant to get all the air bubbles out before it dries. A simple vacuum blanket pulls everything down tight. Don't let this scare you it is really quite easy. First cover thefreshly epoxied fiberglass with a layer of thin plastic sheet. Then cover the sheet with a blanket.This way the blanket won't stick to the fiberglass. Cover the blanket with a larger piece of plastic sheeting and tape it down to the floor all around the edges Make a smallslit in the plastic and plug in the vacuum hose from your shop vac. Turn it on and watch the vacuum pull it down to the floor. If it won't pull a vacuum check for leaks in thetape. I ran the vacuum for about two hours and did a great job. When you take it apart the plastic will pull of easily as it will not stick to the fiberglass
http://www.instructables.com/id/10-HP-Hovercraft/
Step 4: Underside of the hull is now completeThis is what the underside of the hull should look like
Image Notes1. MOTOR POST SUPPORT2. INSIDE SKIRT ATTACH POINT
Step 5: MAKING THE DUCTThe duct is made from less dense 1" white Styrofoam. The plans show you how to lay out a curving arc that will wrap around the plywood plugs in the middle. Start byscrewing together the two plywood discs to spacers the width of the duct. Wrap thee discs with a band of 1/8"plywood. After you cut the ducts to the proper shape (arc)Cut kerfs 3/4" deep all around the inside of the ducts so they will bend around the form easily. Be sure and maintain the exact centers of the discs. Later you will drill themout to the size of your motors crankshaft. Don't separate the duct from the form at this time. When it gets to be time to locate the duct to the hull these holes will let youmount the duct perfectly in line with your engine shaft. The plans go into great detail on this step and we didn't have any problems with it.
http://www.instructables.com/id/10-HP-Hovercraft/
Image Notes1. plywood temporary discs the size of the propeller2. Center hole drilled to the size of the crank shaft of your engine3. Temporary screws to spacers inside to hold discs in place. four places
Step 6: MAKING THE MOTOR SUPPORT POSTCut a 2 x 4 piece of pine to the length specified in the plans And put it in the hole cut into the hull (center line of craft) Use plenty of epoxy for this. Cut a base plate from3/4" plywood for mounting the engine. Fit rear legs from pine and drill and screw braces everywhere you can. This will keep vibration to a minimum I used gorilla glue inevery joint. I put epoxy lay ups all around the post for added strength.
Step 7: MOUNTING THE DUCTTemporarily mount the motor in place and drill the plywood disc to the size of your crank shaft. Set the duct in place and align it up with the motor crank. Use shims toassure good alignment. When you are satisfied that it looks straight anchor the duct in place with spray can expanding foam. Put it on heavy as it can be shaped orremoved easily with a knife or file. When it hardens you should have a rigid mounted duct that is aligned with the motor crank shaft lined up with the center of the duct. Atthis time you can remove the plywood discs from the duct by removing the screws that hold the spacers. It should pop right out.
http://www.instructables.com/id/10-HP-Hovercraft/
Image Notes1. Saw kerfs to aid in bending the foam around the plywood band2. Spray can foam3. Temporary screws holding inside spacers in place
Step 8: THE PROPELLERYou can buy the prop two ways, either finished or unfinished. You can save a lot of money by finishing your prop your self.First slide the prop onto the crank without the hub to see if it fits inside the duct without binding. A duct is most efficient when the prop fits closely inside the duct. Be verycareful when removing tip material, it's easy to cutoff but hard to put back . Once you have the tip clearance set you can begin to sand the blades with a power sanderand finish by hand. Once you get it smooth you MUST balance it to avoid vibration.Hang the prop on a rod held in a vise to see which blade is heavier than the other. Don't short cut by shortening the tips. Just keep sanding the blades. Most props arepretty close when they arrive so it is not an undaunted task. Once it is balanced give it a couple coats of paint to preserve it. It's a good idea to paint a white band at thetips for safety's sake. By now the foam is hard so you can cut the bottom of the duct with a sabre saw to conform with the openings in the hull for lift air. Now is a goodtime to trial fit the prop and hub to the motor to make sure it runs true inside the duct. The motor should be bolted down securely. Turn the prop over slowly by hand.Check for at least 1/8" clearance all around. You can adjust by putting small shims under the motor mounts if needed.
Image Notes1. This cut allows for maximum air flow to the lift and skirt openings2. Opening for lift air3. Opening for skirt inflation
http://www.instructables.com/id/10-HP-Hovercraft/
Step 9: BUILD THE AIR CHAMBERThe purpose of the air chamber is to divide the air flow between lift and thrust. The picture doesn't show it in it's proper place. We just needed a flat area to glue andfiberglass it together It is made from 1/8" plywood
Step 10: Install the air chamberSlide the three sided chamber in place and glue or fiberglass in place. I prefer to use fiberglass when ever possible. When the bond is set install the top of the box. Youwill probably have to put a weight on the rear to hold it tightly to the bottom frame. When it is dry fiber glass the edges and you are done with the air box
Step 11: THE RUDDERSThe rudders are cut from 1" foam. Drill holes in the top and bottom to fit dowel pins. Glue the dowel pin in the bottom. The top pin just drops in to allow for removal of therudder. i used a belt sander to fashion an airfoil to make them lighter and more aerodynamic. Don't make them too thin. Cover the rudders with one layer of fiberglass togive them strength. Glue small drilled blocks at the top of the duct, and the air chamber to receive the dowel pins. Connect the two rudders together at the bottom dowelpin with a short length of aluminum or wood stock. This is where the steering cables are attached. Run the cables through the air box and route them through eyelets tothe control stick. Don't terminate them yet until you build the body. We used a 2' long piece ofof 1" PVC for a control stick.
http://www.instructables.com/id/10-HP-Hovercraft/
Step 12: MAKE IT LOOK GOOD WITH A BODYStart by laying out the basic shape with a marking pen and screwing 3/4" stock to the line. The 1/8" plywood bends easily to conform to the shape. Next clamp and gluethe 3/4" stringers to the top. Fit a 2 x 4 between the sides to form a dash board.This is a good time to attach the throttle cable to either the dash or the side strips. Lateron we put a lanyard connected to the kill switch in the dash. This is a requirement if you want to run it in any sanctioned races. Cover the top with a plywood sheet and fitsome scrap foam to form the nose piece. Run the steering cables through the sides and attach them to the stick. Make a little seat that feels comfortable. We paddedours with some foam and scrap vinyl. Paint the whole craft with a couple coats of any paint you may have laying around. We chose white because it stays cool even indirect sunlight. A little trim color makes it unique to you and really makes it stand out. Now that it is painted is a good time to add a screen to stop wayward hands andarms from geting into the prop area. That could ruin a good day. We had some left over wire fencing and fashioned a guard from that. We also added four lifting handlesin the corners to aid in lifting it on and off a trailer.
Step 13: THE SKIRTI am sorry that I didn't take pictures of the skirt installation but the plans go into great detail on this step. I put the craft up on horses to make it easy to get at the insideattachment. The key to a good skirt is in the corners. They are over lapped and glued with the special glue tat is supplied by Universal Hovercraft. The skirt is held inplace by 200 stainless screws and washers. The only tricky part is the screws around the rear of the air box. The skirt is very rugged and we have not had any troublewith it.
http://www.instructables.com/id/10-HP-Hovercraft/
Step 14: THE BIG DAY THE TEST DRIVEThe first thing we did was to drag it outside and start it up to check on how it hovered. The skirt filled up with air at a little more than idle and we could push it aroundeasily. We gave it more throttle and it began to move forward. My grandson got in first and drove it all around the back yard. It seemed to respond good to steering controlbut we learned that it tends to side slip if you are going too fast when you go into the turn. Next I got in and also had good results. Time for the water tests. We took thehovercraft to my best friends house, he lives on a 1000 acre lake and has a small beach to launch from. The craft floats well on it's own and with a person that weighs200 lbs. I elected to be the test pilot and put on a life jacket for safety. Starting the engine brought it up to a nice hover. Increasing the throttle a bit started the craftmoving forward and away from the beach. More throttle and it began to move forward more briskly. It seemed to handle really good. at full throttle until I tried my first turn.To my surprise I started to go sidewise and then backwards. With a little experience I learned to lean my body into the turns and reduce throttle slightly and was able tonegotiate the turns much better. I don't know how fast I was going because I don't have a speed indicator, but I left a pretty good wake. Leaning forward seemed toincrease the speed. When my grandson took his turn he seemed to go a little faster than me and he was riding more level than I was. I think maybe the seat should be alittle more forward. We really had a blast and 8 or10 people of all sizes and weights tried it out. The heaviest guy weighed around 300 lbs. Although it floated well, hecould not get the performance that we could. Under 225 lbs. was O.K.We played for 2 hours and burned two tanks of gas and didn't have any problems. All in all it was a great test day, This craft is fun, easy to drive, and proved to be verysafe. Our youngest pilot was 10 or 12 years old . My only other comment would be to install a quieter exhaust as the neighbors were not impressed with the noise. Itattracted a lot of attention as many people had never seen a hovercraft before.
Step 15: A SHORT VIDEOSome how I misplaced the longer video
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Comments
50 comments Add Comment view all 239 comments
fortneja says: Sep 5, 2011. 4:09 PM REPLYI built a UH-10F myself back in high school. I was slowly putting together an instructable for it several years ago, but it was taking too long, so I gave up. Ican send you my notes and photos if you want to elaborate on some of the steps.
I originally used the rope and pulley system specified in the plans for steering, but later modified the steering to use bicycle cable, which was much moredurable and responsive.
danfarncombe says: Sep 27, 2013. 2:30 AM REPLYDear Fortneja, I just saw your post and wondered if I may take a look at your notes and photos for the UH 10F? I am about to build one and would gratelyappreciateThank you,Dan Farncombe: [email protected]
http://www.instructables.com/id/10-HP-Hovercraft/
coolboy101 says: Aug 4, 2013. 3:34 PM REPLYHi there, I know this instructable is getting quite old now, but I am thinking of building a hovercraft as a school project, and this one seems relatively simpleand your guide is really helpful! Unfortunately, being in the UK I cannot get the plans to this hovercraft easily or buy any of the kits, so would like to ask a fewquestions if that's ok.
1... How large were the pieces of plywood? The hovercraft is 10ft x 5ft and I can only find 8ft x 4ft plywood. Did you have to join more than one piecetogether? If so how did you do that?
2.... What parts of the hovercraft were actually fiberglassed? Not the whole thing presumably, just the joints?
3.... Is any type of foam acceptable? I have found some 50mm (2") Styrodur which is "extruded rigid polystyrene foam (XPS)" with a compressive strength of300 Kn/m². Would this be acceptable do you think?
4... How powerful should the engine be? I have found a brand new 13hp engine for a good price. Would this be a good size or will it be overkill or too heavy?
Any help would be much appreciated! I am sure I will find many more questions needing answers, so if you could help that would be great.
Thank you!
SofiaM says: May 5, 2013. 4:32 PM REPLYHow big is this hovercraft? 4 by 8, or 5 by 10? Thank you
mickydee says: May 6, 2013. 8:40 AM REPLYThe hovercraft is 5 x 10 overall. I bought it at a local builders supply in 4 x 8 sheets.. After it is covered with the 1x4 plywood and fiber glass the joints areall covered. Alternate the joints between the foam and plywood for strength.Mickydee
SofiaM says: May 4, 2013. 5:43 PM REPLYHow big should the sheet of 1" styrofoam be? Thank you!
BoSkarr says: May 2, 2013. 8:38 PM REPLYThis is amazing. I plan to start one that want to hald more than one person. This is a great guide, as I can't become a member of universal hovercraftsbecause I am 14, don't have a job, and I don't have a phone. I have a couple friends who will help and I can't stress it enough how amazing your hovercraftlooks.
davtheman223 says: Apr 27, 2013. 9:02 PM REPLYyou should enter the epilog challenge V if you can
shull3 says: Jan 4, 2013. 1:41 PM REPLYCongratulations on a successful first build.This is a great project for Father/Grandfather and Son/Grandson. Universal Hovercraft http://www.hovercraft.com/content/ is a great company for DIYhovercraft projects. I build a UH12T4 with my high school soon back in 2002 -2006. We have had a great time with it and now belong to the http://www.hoverclubofamerica.org/ Hoverclubofamerica. The club has great resources for recreational hovercrafting throughout the USA. Most of themembers have either built or operate a homebuilt hovercraft. If you and your Grandson get into this hovering more be sure to check out the HCA.We sponsor over 20 events a year at many locations around the country. http://www.mapquest.com/?version=1.0&hk=7-HQDmHdt9#dd126f889ef3d31a8d5316c6 Here is a map of the locations for the 2013 season. Hope to see you at out hovering this year!
Scott Hull
http://www.instructables.com/id/10-HP-Hovercraft/
phynicfirebird says: Apr 25, 2011. 4:52 PM REPLYI was wondering if I could use any type of epoxy or is there a certain type that would work a lot better? What would you recommend.
mickydee says: Apr 26, 2011. 12:33 PM REPLYI always use the cheapest I can find. Tru to use something that is easy to mix, like a 2 to 1 or a 3 to 1 ratio. Any epoxy you can get will work. You willneed about a gallon.mickydee
fgarrett says: Oct 6, 2012. 2:31 AM REPLYMr. Dee, I'm stoked. I'm in the third world and this is the thing to have.I can get most parts hereCan you tell me a ratio to increase the size to accommodate 2 people or 180 more pounds
phynicfirebird says: Apr 27, 2011. 6:20 PM REPLYThank you....i am hoping to build my own from scratch this summer without any kits...the only problem i have is that since i am only 16 and do notcurrently have a job (wish i did) it is going to be hard to get the money but i am hoping to get a job real soon then start saving for the parts.
The nerdling says: May 3, 2011. 7:21 PM REPLYcouncil cleanup days is your answer
gear762 says: Sep 27, 2012. 4:27 PM REPLYYour project is pretty sweet! I plan on building a hovercraft for a science fair at my school, but as of yet, no one has any description of how to put on the skirtor what size/how many holes to cut out for a 4ft by 8ft hovercraft. If you could maybe send me a few pictures of the skirt, as well as some basic instructionson how to put the skirt on and cut out the holes, that would be great! Thanks!
Xthinker says: Sep 18, 2012. 3:08 PM REPLYI cant seem to find the website, can you post a link to it? I'm interested in making one
dirt_hawker says: Sep 13, 2012. 11:18 AM REPLYHow much do you and your grandson weigh? How would you describe the diffrence in weight and perfermance?
vlxwgn says: Apr 13, 2011. 7:32 PM REPLYDo you have any more information on the skirt installation? Did the skirt you bought come with instructions? Other than that awesome :)
mickydee says: Apr 13, 2011. 9:26 PM REPLYHi!Yes the kit come with very good instructions on cutting and installing the skirtI was lucky, Grandma is a seamstress and added her touches to it. Don't let that stop youmickydee
mrtomc says: Aug 23, 2012. 6:27 PM REPLYI have a UH-10f that I purchased already built. It was never used. I had to fabricate a rudder stick and add a throttle cable. Both work great. I had it onthe lake yesterday and it got 19 mph on the gps. The only trouble i have is that I get water in the skirt inflation hole and I have to drag it up on shoreto drain it. There is a slit in the bag in the right rear that i used to drain the water. Should i make some ductwork to raise the intake hole to keep waterout?
mickydee says: Aug 24, 2012. 10:15 AM REPLYI did not have that problem. Your center of gravity may be more to the rear than mine. Adding a riser around the port should fix your problem.have funmickydee
mickydee says: Apr 13, 2011. 9:28 PM REPLYGood idea I don't think they had that one when I bought my plansmickydee
bnsfwarbonnet says: Jul 18, 2012. 4:33 PM REPLYDoes the skirt inflate when you start it or it stays inflated? Looks like fun!
http://www.instructables.com/id/10-HP-Hovercraft/
mickydee says: Jul 19, 2012. 7:41 AM REPLYA portion of the prop air is diverted to the skirt port and inflates when the engine is started. The craft wont sink when the engine is off because the deck ismade of enough foam to keep it buoyantIt is a lot of fun Mickydee .
bnsfwarbonnet says: Jul 19, 2012. 9:42 AM REPLYNeat.
cod3hack3r says: Jun 24, 2012. 4:46 PM REPLYWhen i grow up and have kids and hopefully grandkids, i hope i can do something like this with them, this is such a cool project, wonderful instructions too,and it came out great. This is great man, 10/10
mickydee says: Jun 25, 2012. 3:42 PM REPLYThank you very much.My grandson and I had a great summer working together.We really got to know each other.We both learned some new skills. That's what these instructables are all about.
Mickydee
hover_crafter says: Apr 24, 2012. 9:10 AM REPLYVery cool! How Much does it weigh?
mickydee says: Apr 24, 2012. 1:28 PM REPLYI am not absolutely sure. I would guess about 125 lbs., maybe 150.. The engine and prop are the determining factor. The bulk of the craft is made of verylight weight foam and 1/8" plywood. If you go to larger motor with electric start, you could double up on the foam quite easily.mickydee
serice says: Apr 19, 2012. 2:01 PM REPLYWhen type of epoxy die you use to coat the bottom of the hull with?
mickydee says: Apr 19, 2012. 2:27 PM REPLYI used an epoxy called "System Three" medium temp. I bought a gallon on line, It is available from several sites. I liked it because it comes with attachedplungers for accurate measuring and it cures overnight. Be sure to use the vacuum bagging procedure as spelled pout in my ible. You can use just aboutany two part epoxy you want, it is not critical. I used half a gallon for the whole projectmickydee
engineering wizard says: Apr 15, 2012. 2:33 PM REPLYi rember the first one i built, aha that was a awsome day i spent a whole week with my uncle sketching and looking at the gaint hover crafts called LCAC-landing craft, air cushioned”" used by the marines and they are amphibious by the way
Mr. walrus says: Apr 14, 2012. 8:29 AM REPLYWhat kind of trailer did you use?
mickydee says: Apr 15, 2012. 11:35 AM REPLYMy trailer is a 4 by 8 with removable side rails. It also has a dump feature with a pin in the front. I can literally drive it off the trailer, but it will not climb theincline by itself.Two people can easily lift it onto the trailer. It could be easily winched on if the motor was left idling to provide a little lift.
Football viking boy says: Jan 20, 2012. 2:49 PM REPLYWOW I wish my grandpa was this cool
garagegenius says: Feb 17, 2012. 5:25 PM REPLYyeah right???
Football viking boy says: Feb 19, 2012. 10:18 AM REPLY???????
http://www.instructables.com/id/10-HP-Hovercraft/
arjun0520 says: Feb 15, 2012. 6:44 AM REPLYdude where did u u get the motor from
Wahoo96 says: Jan 25, 2012. 3:32 PM REPLYhey, im thinking of making my own,what engine (make/model) would you recomend??
Wahoo96 says: Jan 25, 2012. 3:02 PM REPLYis it amphibious? how fast is it? and can you put a more powerful engine on it?
tdem says: Oct 15, 2011. 12:37 AM REPLYJust a little warning. Not long ago, a man here in NZ was decapitated by his kit built hovercraft. Be careful!article
voyageur10 says: Nov 5, 2011. 6:07 PM REPLYDon't leave us hanging! What happened exactly?
deobomb says: Nov 2, 2011. 12:10 PM REPLYdo you think it would work if i used a large inner tube and a small 110 atv motor to make a small one
ctz says: Sep 28, 2011. 12:15 PM REPLYI was wondering if you could tell me the time it took you to build this amazing contraption.
avatar_i says: Jun 8, 2011. 7:24 PM REPLYForgive me if I missed this, and I am quite bad at math, but: How far and/or how long can you run this beauty on a gallon of gas? If you were to estimate thegallons per mile- as it were- what do you think it might come out to? My thinking here is to build one for one human and two 30~50 pound Dogs tobe traveling about.Looks liks a blast to ride in, too! I only hope I can succcesfully built it!Quite entertaining and instructive, and one of my top ten favourites!Thanks!
Eye Poker says: Jul 8, 2011. 7:50 PM REPLYThey aren't quiet, it would most likely scare the poop out of your dogs.
hossweightlifter says: Sep 24, 2011. 6:19 PM REPLYewwwwww
theexpert says: Jul 8, 2011. 9:47 AM REPLYi dont know about your mileage for one gallon but i can tell you if you weigh oh say 130 then you will probably need a separate engine for the skirt so itcan lift you and your dogs at the same time
rocketman20 says: Aug 23, 2011. 6:46 PM REPLYSo that small rectangular hole fills the skirt and the big hole goes straight to the inside of the skirt which creates pressure and causes lift. That makes somuch more since. Do you know the dimensions of the two holes.
cpeterkelly says: Apr 14, 2011. 3:09 PM REPLYThe only thing I've seen go 'very wrong' with one of these craft is if you take off your T-shirt because it's wet, or you're hot, or you think the photos will bebetter as a result. Then the next time you throttle up, the shirt becomes airborne, is sucked into the intake and causes your highRPM propeller blades toEXPLODE.
Or at least that's what I remember it seeming like. Eye protection on a hovercraft, even though the blades are behind you, is a good idea.
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