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Please read this manual carefully before operating this plane. P-51D OLD CROW ( PNF )

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Page 1: P-51D old crow manual v2web - HobbyKing883 P-51D OLD CROW CHARGING THE FLIGHT BATTERY CAUTION: All instructions and warnings must be followed exactly. Mishandling of Li-Po batteries

Please read this manual carefully before operating this plane.

P-51D OLD CROW (PNF)

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Read the ENTIRE instruction manual to become familiar with the features of the productbefore operating. Failure to operate the product correctly can result in damage to the product, personal property and cause serious injury.

This is a sophisticated hobby product and NOT a toy. It must be operated with caution and common sense and requires some basic mechanical ability. Failure to operate this Product in a safe and responsible manner could result in injury or damage to the product or other property. This product is not intended for use by children without direct adult supervision.

This manual contains instructions for safety, operation and maintenance. It is essential to read and follow all the instructions and warnings in this manual prior to assembly, setup, or use, in order to operate correctly and avoid damage or serious injury.

As the user of this product, you are solely responsible for operating in a manner that does not endanger yourself and others or result in damage to the product or the property of others. This model is controlled by a radio signal subject to interference from many sources outside your control. This interference can cause momentary loss of control so it is advisable to always keep a safe distance in all directions around your model, as this margin will help avoid collisions or injury.

Age Recommendation: Not for children under 14 years. This is not a toy.• Never operate your model with low transmitter batteries.• Always operate your model in an open area away from cars, traffic or people.• Avoid operating your model in the street where injury or damage can occur.• Never operate the model in the street or in populated areas for any reason.• Carefully follow the directions and warnings for this and any optional support equipment (chargers, rechargeable battery packs, etc.) you use.• Keep all chemicals, small parts and anything electrical out of the reach of children.• Moisture causes damage to electronics. Avoid water exposure to all equipment not specifically designed and protected for this purpose.• Never lick or place any portion of your model in your mouth as it could cause serious injury or even death.

WARNING:

SAFETY PRECAUTIONS AND WARNINGS:

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TABLE OF CONTENTS

Kit contents ........................................................................................................................... 1The spare parts list ............................................................................................................... 1Spare parts list content .......................................................................................................1-2The illustration of the spare parts ......................................................................................... 2Charging the Flight Battery ................................................................................................... 3Low Voltage Cutoff (LVC) ..................................................................................................... 3Fuselage/tail assembly ......................................................................................................... 4Install the control horn ........................................................................................................4-5Connect the Y harness to the main wing .............................................................................. 6Install the Horizontal stabilizer .............................................................................................. 6Electronics installation and set-up ........................................................................................ 7Bind the receiver to the transmitter ........................................................................................7Install the receiver ................................................................................................................. 7Install the battery .................................................................................................................. 8Hook on the linkage rod of the stabilizer .............................................................................. 8Test the stabilizer control servos .......................................................................................... 8Electronics installation and set-up ........................................................................................ 9Main wing assembly, set-up and installation .................................................................. 10-12 Install the control rod ........................................................................................................... 10Test the retract and the LED set .......................................................................................... 11Install the oil tank ................................................................................................................. 11Mount the main wing ........................................................................................................... 12Final assembly and set-up procedures .......................................................................... 13-21Important ESC and model information ................................................................................ 13The transmitter and model set up .................................................................................. 14-15Check the control throws ............................................................................................... 16-17Install the propeller set .................................................................................................. 17-18Install the antenna mast ...................................................................................................... 18 Check the C.G . (Center of Gravity) .................................................................................... 21Before flying the model ....................................................................................................... 22Find a suitable flying site .................................................................................................... 22Perform the range check of your plane .............................................................................. 22Monitor your flight time ....................................................................................................... 22Flying the your model ......................................................................................................... 23Take off ............................................................................................................................... 23Flying .................................................................................................................................. 23Landing ............................................................................................................................... 23Maintenance ....................................................................................................................... 23Troubleshooting .................................................................................................................. 24

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TABLE OF CONTENTS

Kit contents ........................................................................................................................... 1The spare parts list ............................................................................................................... 1Spare parts list content .......................................................................................................1-2The illustration of the spare parts ......................................................................................... 2Charging the Flight Battery ................................................................................................... 3Low Voltage Cutoff (LVC) ..................................................................................................... 3Fuselage/tail assembly ......................................................................................................... 4Install the control horn ........................................................................................................4-5Connect the Y harness to the main wing .............................................................................. 6Install the Horizontal stabilizer .............................................................................................. 6Electronics installation and set-up ........................................................................................ 7Bind the receiver to the transmitter ........................................................................................7Install the receiver ................................................................................................................. 7Install the battery .................................................................................................................. 8Hook on the linkage rod of the stabilizer .............................................................................. 8Test the stabilizer control servos .......................................................................................... 8Electronics installation and set-up ........................................................................................ 9Main wing assembly, set-up and installation .................................................................. 10-12 Install the control rod ........................................................................................................... 10Test the retract and the LED set .......................................................................................... 11Install the oil tank ................................................................................................................. 11Mount the main wing ........................................................................................................... 12Final assembly and set-up procedures .......................................................................... 13-21Important ESC and model information ................................................................................ 13The transmitter and model set up .................................................................................. 14-15Check the control throws ............................................................................................... 16-17Install the propeller set .................................................................................................. 17-18Install the antenna mast ...................................................................................................... 18 Check the C.G . (Center of Gravity) .................................................................................... 21Before flying the model ....................................................................................................... 22Find a suitable flying site .................................................................................................... 22Perform the range check of your plane .............................................................................. 22Monitor your flight time ....................................................................................................... 22Flying the your model ......................................................................................................... 23Take off ............................................................................................................................... 23Flying .................................................................................................................................. 23Landing ............................................................................................................................... 23Maintenance ....................................................................................................................... 23Troubleshooting .................................................................................................................. 24

88 P-51D OLD CROW1

KIT CONTENTS1. The fuselage assembly (With the motor, the canopy, the electronic parts, ESC)2. Main wing ( With all electric device installed)3. Horizontal stabilizer with elevator joiner installed4. canopy (with pilot)5. Propeller, spinner set, and the antenna mast6. Spare parts bag7. Fuel tank

THE SPARE PARTS LISTReplacement parts for the Durafly P -51D are available using the order numbersin the Spare parts list that follows. The fastest, most economical service can be providedby your hobby dealer or mail-order company.

SPARE PARTS LIST CONTENTSpare parts list content43509 Fuselage (With all the plastic parts and rudder installed)43515 Main wing (With the control horn in stored)43518 Horizontal stabilizer ( With the elevator joiner installed)43521 Canopy (Plastic canopy)43523 Cowl43525 Spinner Main landing gear strut (With the fairing and the tires)

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23387 Rear landing gear (With the tire)21029 Propeller23389 X Motor base Decal sheet23391 Motor shaft23392 Motor board23393 Pilot

NOTE: All of the parts are painted with no decal applied.

THE ILLUSTRATION OF THE SPARE PARTS

2

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88 P-51D OLD CROW3

CHARGING THE FLIGHT BATTERYCAUTION: All instructions and warnings must be followed exactly. Mishandling of Li-Po batteries can result in fire, personal injury, or property damage.

BATTERY WARNING:● By handling, charging or using the included Li-Po battery you assume all risks associated

with lithium batteries.● If at any time the batteries begin to swell, or balloon, discontinue use immediately!

Charging or discharging a swelling or ballooning battery can result in fire.● Always store the batteries at room temperature in a dry area to extend the life of the

battery. Always transport or temporarily store the battery in a temperature range of 40-120˚F. Do not store battery or model in a car or in direct sunlight. If stored in a hot car, the battery can be damaged or even catch fire.

● Never use a Ni-Mh charger. Failure to charge the battery with a compatible charger may cause fire resulting in personal injury and property damage.

● Never discharge Li-Po cells to below 3V.● Never leave charging batteries unattended.● Never charge damaged batteries.

CHARGING THE FLIGHT BATTERYWhen charging the battery, make certain the battery is on a heat-resistent surface, chargethe battery before assembly of the airplane. Install the fully charged battery to performcontrol tests and binding.

LOW VOLTAGE CUT OFF (LVC)When a Li-Po is discharged below 3V per cell, it will not hold a charge. The ESC protectsthe flight battery from over-discharge using Low Voltage Cutoff. Before the battery chargedecreases too much, LVC removes power from motor in two ways: (1) Reduces power -ESC reduces motor power (recommended), (2) Hard cutoff - ESC instantly cuts motorpower when the pre-set Low Voltage Protection Threshold value is reached. Thesesettings can be changed using the ESC programing guide.

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4

FUSELAGE / TAIL ASSEMBLYINSTALL THE CONTROL HORN

1. Attached the control horn to the starboard of the rudder with it toward the hinge line.

3. Check to make sure the screws are firmly grabbed into the horns.

4. Install the aileron control horn on the servo side of the main wing with the horn towards the hinge line as the picture shows.

2. Secure the horn from the backplate side using the provided screws. NOTE: The longer screws always locate on the leading edge side of all the control surface.

1.1

2

3

4.1

4.2

1.2

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88 P-51D OLD CROW5

ASSEMBLE THE PLANEINSTALL THE CONTROL HORN

1. Attach the flap control horn on the servo side of the main wing with the horn towards the hinge line.

1.1

3. Secure the horn using the provided screws from the backplate side. NOTE: The longer screws for secure the horns always located on the leading side of the surface.

3

4. Make sure the screws firmly into the backplate. Note: Do not over tighten the screws, but make sure they are tight enough.

4

1.1

Flaps

2

2. Secure the horn from the backplate using the provided screws. NOTE: No backplate used in this step or it will stop the flap from fully retract.

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3. Connect the wing leads to the harness the first. Two ailerons servo to the Y harness labeled AILE (CH1), main landing gears to the harness with GEAR (CH5), two LED leads and the flaps to the four way harness labeled FLAP (CH6). Secure the connector using the tape.

1. Apply glue to the horizontal stabilizer halves where it mating with the mounting Groove. NOTE: leave it for one minute after applying glue to the horizontal stabilizer for better gluing before inserting to tail.

3.1

3.2

3.3

INSTALL THE HORIZONTAL STABILIZER

AileronsAilerons

GearsGears

FlapsFlaps

1.1 1.2

2. Insert the starboard stabilizer half into the tail mounting slot the same with the port side half.

2.1

3. Check to make sure the stabilizes is standing fully vertical with the vertical fin. Adjust any misalignment before the glue dried throughly.

90o

ASSEMBLE THE PLANECONNECT THE Y HARNESS TO THE MAIN WING

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88 P-51D OLD CROW7

1. Before getting started, bind your receiver with your transmitter. Please refer to your Transmitter Manual for proper operation. CAUTION: To prevent personal injury, DO NOT install the propeller assembly onto the motor shaft while binding the receiver to your transmitter and in all the testing steps until the manual tell you to do it .

3. Note: All servo and retract leads have been specifically labeled for your convenience. Use the provided Y-harness for situations where two or three servos are controlled by one channel; for example ailerons, landing gear, and flaps. Refer to the diagram bellow for recommended connections. Receiver connection diagram.

4. Attach the receiver to the receiver chamber in front of the tail servo using double side tape or velcro tape

1. Remove the canopy by rising the band on the rear end of the cover.

2. Disconnect the battery from the ESC after the binding process completed. Turn off the transmitter and remove the bind plug as necessary. Plug the elevator and the rudder servos to the receiver.

INSTALL THE RECEIVER

ELECTRONICS INSTALLATION AND SET-UPBIND THE RECEIVER TO THE TRANSMITTER

1

2

ReceiverY-harnessAileron

AileronChannel-1Aile

Elevator

Channel-2Ele

Throttle Channel-3Thro

Rudder

Steering Channel-4

Rudd

Landing Gear

Landing GearChannel-5

Gear

Flap

LED

Flap

LED

Channel-6Aux1

4

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8

1. Slide the battery into the battery hatch with the power supply cable toward the rear end of the plane and secure it using the pre installed hook and loop tape. NOTE: You may need to relocate the battery position to achieve the correct CG for your model.

3. The provided piece of fuel tubing keeps the clevis closed during flight. Secure all the linkages the same way. NOTE: Do not over slide the securing tube or it will impede the movement of the surface control horn. Install all of the linkages the same way.

1. Make sure all the control sticks on your radio are in the neutral position (rudder, elevator, ailerons) and the throttle in the OFF position. Turn on the transmitter and power on the model, move the elevator and the rudder on the transmitter to make sure aircraft control surface move orrectly. If controls respond in the opposite direction, reverse the direction for operation of flight controls.

4. Repeat the step 2&3 for the all the other linkage hooking.

1. Loose the screws on the control connector which holding the rod into place.

TEST THE STABILIZER CONTROL SERVOS

HOOK ON THE LINKAGEROD OF THE STABILIZER

ELECTRONICS INSTALLATION AND SET-UPINSTALL THE BATTERY

1

1

2. Snap the clevis into the elevator surface control horn.

2

3

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88 P-51D OLD CROW9

4. Adjust the control connector on the rear landing gear steering arm to make sure the wheel align with the centerline of the fuselage.2. Make sure all the control surface trim in

neutral position, for computerized transmitters, use the servo/channel sub-trim feature to make each servo arm fully vertical. NOTE: Make sure the trims and the sub trims in neutral position before making some mechanically trim. Adjust the servo arms mechanically make sure all all servo arms are as fully vertical with the servo case as possible. If not, adjust the servo arm by using the trim function on your radio.

5. The motor should rotat counterclockwise when viewing the plane from the front. Or you will have to disconnect any two of the motor plugs and plug them back to each other’s socket.

ELECTRONICS INSTALLATION AND SET-UP

3. Adjust the linkage in the control connector to make sure the counterbalance leading edge of the elevator and the rudder level with the leading edge of the horizon stabilizer and the vertical fin respectively. NOTE: Use a drop of thread lock on the screw before secure the rod into place.

1.2

1.1

Elevator up/Stick downElevator up/Stick down

Elevator down/Stick upElevator down/Stick up

Rudder left/Stick leftRudder left/Stick leftRudder left/Stick leftRudder left/Stick left Rudder Right/Stick rightRudder Right/Stick right

3.1 Elevator

Rudder

Elevator

Rudder

5

4

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10

1. The standard hole settings for linkage connections are shown by the black arrows in the diagram below. You can refer the recommended control threw setting to move the linkage to different hole positions to increase control surface travel and increase the aerobatics of the airplane.

3. Toggle switch the flaps channel knob according to which AUX port that the Y harness you have inserted into the receiver. NOTE: To avoid the “buzz” sound from the flap servos, install either the flaps linkage while the servo arm in up position. And make sure the trailing edge of the flaps level with the wing root.

4. Thread the folks on the linkage rod clockwise and counterclockwise to make sure the flaps are at right position when the folk closed.

2. Make sure the aileron servo horns are fully vertical with the servo case and stick Input the aileron to make sure the servos functions well. Put the Z-bend end of the linkage into the desired servo control horn hole of the main-wing. It is a tight fit and should allow the linkage to move just slightly within the hole to avoid binding up. Hook on the clevis the same with the stabilizer.

MAIN WING ASSEMBLY, SET-UP AND INSTALLATIONINSTALL THE CONTROL ROD

Increase

IncreaseIncrease

Decrease

DecreaseDecrease

Servoarm Control horn

2

3.1

Flap servo indown positionFlap servo indown position

3.2

Flap servoin up positionFlap servoin up position

4

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88 P-51D OLD CROW11

1. Cycle the retractable main landing gears several times to ensure proper function.

2. Make sure the navigation light on port side(L) wing tip emitting red beams, the starboard(R) is green.

1. Slide the oil tank into place as the picture shows.

MAIN WING ASSEMBLY, SET-UP AND INSTALLATIONTEST THE RETRACT AND THE LED SET INSTALL THE OIL TANK

L R

1

2

1.1

1.2

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12

MAIN WING ASSEMBLY, SET-UP AND INSTALLATIONMOUNT THE MAIN WING

1. Seat wing to the wing bay by threading the leads from the hole at the bottom of the wing bay to the receiver hatch,

2. Slightly pull the leads from the receiver hatch before fully fit the main wing into place to avoid any tangling to prevent the wing from fully mounting.

1

2

3. Check to make sure the main wing before secure it into place using the provided self tapping screws, two pieces PWM 3*45 (A) to hold the wing front into place. The PWM 3*50(B) pieces are used to secure the rear side of the wing into place.

AB

3

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88 P-51D OLD CROW13

FINAL ASSEMBLY AND SET-UP PROCEDURESIMPORTANT ESC AND MODEL INFORMATION

1. The ESC included with the P -51 has a safe start. If the motor battery is connected to the ESC and the throttle stick is not in the low throttle or off position, the motor will not start until the throttle stick is moved to the low throttle or off position. Once the throttle stick is moved to the low throttle o off position, the motor will emit a series of beeps. Several beeps with the same tune means the ESC has detect the cells of the battery. The count of the beeps equal the cells of the battery. The motor is now armed and will start when the throttle is moved.

2. The motor and ESC come pre-connected and the motor rotation should be correct. If for any reason the motor is rotating in the wrong direction, simply reverse two of the three motor wires to change the direction of rotation.

3. The motor has an optional brake setting. The ESC comes with the brake switched off and we recommended that the P -51 be flown with the brake off . However, the brake could be accidentally switched on if the motor battery is connected to the ESC while the throttle stick is set at full throttle. To switch the brake off, move the throttle stick to full throttle and plug in the motor battery. The motor will beep one time. Move the throttle stick to low throttle or the off position. The motor is ready to run and the brake will be switched off.

4.Battery Selection and Installation. We recommend the 11.1V 2200mAh 25C(180g/6.3oz) Li-Po battery. If using another battery, the battery must be at least a 11.1V 2200mAh 25C battery. Your battery should be approximately the same capacity ,dimension and weight as the 11.1V 2200mAh 25C Li-Po battery to fit in the fuselage without changing the center of gravity significantly.

5. The specification of the model list as fellow: Wing span: 1100mm / 43.3in Length: 970mm / 37.2in Motor: 3 536-K V750 ESC: 35A with integrated 3 A BEC Battery: 11.1V 2200mAh 25C Servo: 9g*6 Approx fying weight: 1220g Propeller: 10*8 four blades scale propeller Wing area: 20.3dm2 Wing loading: 60.1 g/dm2

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14

FINAL ASSEMBLY AND SET-UP PROCEDURESTHE TRANSMITTER AND MODEL SETUP

Before getting started, rebind your receiver with your transmitter if necessary.CAUTION: To prevent personal injury, DO NOT install the propeller assembly onto themotor shaft while testing the control surfaces.

TIPS: Make sure all control sticks on your radio are in the neutral position (rudder, elevator, ailerons) and the throttle in the OFF position. Make sure both ailerons move up and down (travel) the same amount. This model tracks well when the left and right ailerons travel the same amount in response to the control stick.

1. Move the controls on the transmitter to make sure aircraft control surface move correctly. See diagrams below. If controls respond in the opposite direction reverse the direction for operation of flight controls. Refer to your transmitter’s instructions for changing direction of transmitter flight controls.

Bank Left

Bank Right

Climb

Descend

Yaw Left

Yaw Right

Aileron

Elevator

Rudder /Steering

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88 P-51D OLD CROW15

FINAL ASSEMBLY AND SET-UP PROCEDURES

2. Recheck to align the control surfaces well by trim the control channel. The ailerons align with the trailing edge of the wing tip.

2.1 2.2

2.3 2.4

AileronAileron ElevatorElevator

RubberRubber

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16

FINAL ASSEMBLY AND SET-UP PROCEDURESCHECK THE CONTROL THROWS

1. Adjust ATV/travel adjustment on your transmitter until you obtain the following controlsurface travel. Do not adjust dual rates until you have correctly adjusted the total travel.

AILERONS: 16mm up and down (both ailerons), measured at the aileron inboard side.

ELEVATOR: 12mm up and down, measured at the counterbalance leading edge.

RUDDER: 12mm left and right, measured at the counterbalance leading edge.

FLAPS: Full 25mm

2. The dual rates and the Exponential setting for intermediate flyers of P -51 are based on the ATV set in previous step.

2.3 2.4

High Rate

100% 20mm left/right100% 16mm up/down100% 16mm up/down

RudderElevatorAileron

25%25%30%Expo

15%20%20%Expo

75% 15mm left/right63% 10mm up/down69% 11mm up/down

Low Rate

2.1

AileronAileron

2.2

ElevatorElevator

RubberRubber FlapFlap

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88 P-51D OLD CROW17

INSTALL THE PROPELLER SET

CAUTION: Disconnect the battery from theESC before installing the propeller. Beforetesting the propeller, make sure the tail ofthe plane is firmly on the ground and ensure there are no people or objects in the range of the propeller. Make sure the throttle stick and the trim on the lowest position before plug in the battery.

1. Keyed the propeller assembly onto the hex nut of the motor shaft properly.

2. Install the propeller to the motor shaft and make sure the root of the propeller sit right on the saddle with the paint side face the front of the plane. Install the nut and make sure the nut is tight enough to the propeller.

FINAL ASSEMBLY AND SET-UP PROCEDURES

NOTE: 1. This control throws were developed by R&D department for the best performance of the P -51. The small mount of elevator throw on low rate is capable of extreme aerobatics. 2. At first flight, fly the model in low rate. The first time you use high rates, be sure to fly at low to medium speeds. High rates, as listed, are only for EXTREME maneuvering. Only switch to high rate when the plane is flying at slow speed. Never fly at high speed at full air speed. This plane is very responsive and pilot can easily lose orientation. Get familiar with the plane first and then try high rate. 3. For take off and landing, low rate in all control surfaces is strongly recommended.

1.1

1.2

2.1

2.2

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18

4. Screw the spinner using screwdriver, make sure it is tight enough and no gap left between the assembly.

1. Glue the antenna mast into the pre notched slot at the rear end of the plane.

2. Apply glue on the combined side of the air exhaust stack.

3. Install the air exhaust stack. NOTE: Insert the front part of the stack into the concave part of the cowl.

FINAL ASSEMBLY AND SET-UP PROCEDURES

INSTALL THE ANTENNA MAST

4

1.2

2

3

1.1

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88 P-51D OLD CROW19MAINTENANCE MARK APPLYING INSTRUCTION

NOTE: Please apply the maintenance mark details as the guiding illustrated pictures shows.

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20

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88 P-51D OLD CROW21

FINAL ASSEMBLY AND SET-UP PROCEDURESCHECK THE C.G. (CENTER OF GRAVITY)

Center of GravityWhen balancing your model, adjust the motor battery as necessary so the model is level orslightly nose down. This the correct balance point for your model. After the first flights,the CG position can be adjusted for your personal preference.

1. The recommended Center of Gravity (CG ) location for your model is (75mm/2.95in) forward from the leading edge of the main wing (as shown) with the battery pack installed. Mark the location of the CG on top of the wing.

2. When balancing your model, support the plane at the marks made on the top of the main wing with your fingers or a commercially available balancing stand. This is the correct balance point for your model. Make sure the model is assembled and ready for flight before balancing.

3. Always balance the plane with the retracts down.

CAUTION: Do not connect the battery to the ESC while balancing the plane.

75mm

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22

BEFORE FLYING THE MODEL

FIND A SUITABLE FLYING SITE

Find a flying site clear of buildings, trees, power lines and other obstructions. Until youknow how much area will be required and have mastered flying your plane in confinedspaces, choose a site which is at least the size of two to three football fields – a flyingfield specifically for R/C planes is best. Never fly near people– especially children whocan wander unpredictably.

PERFORM THE RANGE CHECK OF YOUR PLANE

As a precaution, an operational ground range test should be performed before the first flight each time you go out. Performing a range test is a good way to detect problems that could cause loss of control such as low batteries, defective or damaged radio components, or radio interference. This usually requires an assistant and should be done at the actual flying site you will be using.

First turn on the transmitter, then install a fully-charged battery into the fuselage.Connect the battery and install the hatch.

Remember, use care not to bump the throttle stick, otherwise, the propeller / fanwill turn and possibly cause damage or injury.

NOTE: Please refer to your TRANSMITTER MANUAL that came with your radio controlsystem to perform a ground range check. If the controls are not working correctlyor if anything seems wrong, do not fly the model until you correct the problem.Make certain all the servo wires are securely connected to the receiver and thetransmitter batteries have a good connection.

MONITOR YOUR FLIGHT TIME

Monitor and limit your flight time using a timer (such as one on a wrist watch or in your transmitter if available). When the batteries are getting low you will usually notice a performance drop before the ESC cuts off motor power, so when the plane starts flying slower you should land. Often (but not always) power can be briefly restored after the motor cuts off by holding the throttle stick all the way down for a few seconds.

To avoid an unexpected dead-stick landing on your first flight, set your timer to a conservative 4 minutes. When your alarm sounds you should land right away.

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88 P-51D OLD CROW23

FLYING THE YOUR MODEL

TAKE OFF

While applying power slowly steer to keep the model straight, the model should acceleratequickly. As the model gains flight speed, you will want to climb at a steady and even rate.The P -51 will climb out at a nice angle of attack (AOA).

PERFORM THE RANGE CHECK OF YOUR PLANE

Always choose a wide-open space for flying your plane. It is ideal for you to fly at asanctioned flying field. If you are not flying at an approved site, always avoid flying nearhouses, trees, wires and buildings. You should also be careful to avoid flying in areaswhere there are many people, such as busy parks, schoolyards, or soccer fields. Consultlaws and ordinances before choosing a location to fly your aircraft. After takeoff, gain somealtitude. Climb to a safe altitude and begin to trim the model till it’s tracks well through allaspects of flight, including high speed passes, inverted flight, loops, and point rolls.

LANDING

Land the model when you hear the motor pulsing (LVC) or if you notice a reduction inpower. If using a transmitter with a timer, set the timer so you have enough flight time tomake several landing approaches.

Recharge the battery and repair the model as needed. The model’s three point landing gearallows the model to land on hard surfaces. Align model directly into the wind and fly down tothe ground. Fly the airplane down to the ground using 1/4-1/3 throttle to keep enough energy for proper flare. Before the model touches down, always fully decrease the throttle to avoid damaging the propeller or other components. The key to a great landing is to manage the power and elevator all the way to the ground and set down lightly on the main landing gear. After a few flights you will find the model can be set down lightly on the mains and you can hold the nose wheel off balancing the model on the mains till it slows and gently settles the nose.

MAINTENANCE

Repairs to the foam should be made with foam safe adhesives such as hot glue, foamsafe CA, and 5 min epoxy. When parts are not repairable, see the Spare Parts List forordering by item number.

Always check to make sure all screws on the aircraft are tightened. Pay special attentionto make sure the bullet of the rotor adaptor is firmly in place before every flight.

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24

FLYING THE YOUR MODEL

PROBLEM POSSIBLE CAUSE SOLUTION

Aircraft will not respondto the throttle but respondsto other controls.

Extra propeller noiseor extra Vibration.

● ESC is not armed.

● Throttle channel is reversed.

● Damaged spinner, propeller, motor, or motor mount.

● Loose propeller and spinner parts.

● Propellor installed backwards.

● Lower throttle stick and throttle trim to lowest settings.

● Reverse throttle channel on transmitter.

● Replace damaged parts.

● Tighten parts for propeller adapter, propeller and spinner.

Reduced flight time oraircraft underpowered.

● Flight battery charge is low.

● Propeller installed backward.

● Flight battery damaged.

● Remove and install propeller correctly.

● Completely recharge flight battery.

● Replace flight battery and obey flight battery instructions.

Control surface doesnot move, or is slow torespond to control inputs.

● Control surface, control horn, linkage or servo damage.

● Wire damaged or connections loose.

● Replace or repair damaged parts and adjust controls.

● Do a check of connections for loose wiring.

Controls reversed. ● Channels are reversed in the transmitter.

● Do the Control Direction Test and adjust controls for aircraft and transmitter.

Motor loses power.

Motor power pulsesthen motor loses power.

● Damage to motor, or battery.

● Loss of power to aircraft.

● ESC uses default soft Low Voltage Cutoff(LVC).

● Do a check of batteries, transmitter, receiver, ESC, motor and wiring for damage (replace as needed).

● Land aircraft immediately and Recharge flight battery.

LED on receiverflashes slowly. ● Power loss to receiver.

● Check connection from ESC to receiver.

● Check servos for damage.

● Check linkages for binding.

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