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P-39 Airacobra 

SAFETY PRECAUTIONS

INSTRUCTION MANUAL

First-time builders should seek advice from people having building 

experience.If misused or abused,it can cause serious bodily injury 

and damage to property.

Fly only in open areas and preferably at a dedicated R/C flying site.

We suggest having a qualified instructor carefully inspect your 

airplane before its first flight.Please carefully read and follow all 

instructions included with this airplane,your radio control system 

and any other components purchased separately.

(The people under 18 years old is forbidden from flying this model)

This R/C airplane is not  a toy!

Specification:

Length:            1788mm(70.4

)

Wing span:       2040mm(80.3

)

Wing area:       78.5sq.dm(8.5sq.ft)

Wing loading:   93g/sq.dm(30.5oz/sq.ft)

Flying weight:   7.3kg(16.1bs)

Radio:              6ch & 8servos

Engine:            30cc gasoline engine

Summary of Contents for P-39 Airacobra

Page 1: ...d instructor carefully inspect your airplane before its first flight Please carefully read and follow all instructions included with this airplane your radio control system and any other components purchased separately The people under 18 years old is forbidden from flying this model This R C airplane is not a toy Specification Length 1788mm 70 4 Wing span 2040mm 80 3 Wing area 78 5sq dm 8 5sq ft ...

Page 2: ...10 6 8 6 6 6 channel radio for aiplane is highly recommended for this model 9 Optional parts rubber wheel with metal hub Spinner We strongly recommen you use the thread lock for all the screws when you build your model ...

Page 3: ...6x14mm 2 1mm Aileron Trailing edge Make sure they are in the right position while installing 8 6 2 2 2 4 2 2 2 2 Clevis Rod 2x300mm Retainer TP Screw 2 3x12mm Wooden Block 20x20x8mm Servo tray 68 5x56 5x2mm Pin hinge 24x24mm Screw 3x40mm Washer 3x15mm 2 Washer 3x15mm Lock Nut 3mm Clevis Retainer Rod 2x300mm Screw 2x10mm 6 Pin hinge 24x24mm Securely glue together If coming off during flights you ll...

Page 4: ... coming off during flights you ll lose control of your airplane which leads to accidents 8 TP Screw 2 3x12mm Rod 2x300mm Clevis Washer 3x15mm Washer Lock Nut 3mm Screw 3x40mm Screw 2x10mm Secure the servo Install the nylon control horn and connect the linkage Epoxy the pin hinges to the flap Keep some space about 1mm width between trailing edge and flap Install the servo as the illustration below ...

Page 5: ...mm Washer 3x6mm PVC part Main wing joiner Rib template 2mm ply 2 8 8 2 1 1 2 LockNut 4mm 2 Bushing 8x4mm Wood dowel 6x30mm 2 Wood dowel 6x50mm 2 Note rubber wheels oleo struts and retracts are optional 2 2 Blind Nut 6mm Screw 6x50mm Reinforcement Plate 1 Mount the gear door and the wheel to the retract Secure the servo Install the nylon control horn and connect the linkage 5mm Cut away the surplus...

Page 6: ...emble the wheel house to the wing Assemble the landing gear to the wheel house 17 18 20 21 4 16 19 Cut the surplus shaded portion carefully off the canopy and exhaust Epoxy plies to relevant position inside the fuselage as below for assembling the cowling Epoxy plies inside the fuselage under the cowing and mount the canopy with TP screw as illustration TP Screw 2 3x8mm TP Screw 2 3x8mm 1 5mm 6 TP...

Page 7: ...riate position in the front of mid wing and epoxy wood dowel in them Securely glue together If coming off during flights you ll lose control of your airplane which leads to accidents 2 Wood dowel 6x50mm Wood dowel 6x50mm 6mm 80mm 6mm 80mm 11mm Assemble the wings to the fuselage with screw and blind nut as below 6 2mm Blind Nut Reinforcement Plate Screw 6x50mm 2 2 Blind Nut 6mm Screw 6x50mm Reinfor...

Page 8: ...the rudder and elevator in the fuselage 2 1 wheel 90mm TP Screw 3x20mm 4 2 Steel wire 0 5x1500mm 2 Lock Nut 4mm Bushing 8X4mm 2 2 Clevis Copper joiner 2 2 Screw 2x10mm Nut 2mm 2 Washer 2x5mm Rod 2x300mm 1 1 Retainer 1 1 Air tank Switch Note rubber wheels oleo struts and retracts are optional Assemble the wheel and oleo strut to the retract as illustration Assemble the retract to the fuselage with ...

Page 9: ... and a hole in the rudder for assembling the rudder shaft 50 51 53 54 10 49 52 Mount the fuel tank to the fuselage Note Customers can choose nylon stabbing fix the tank We don t suppty nylon stabbing Linkage Stopper Washer 2mm Washer 2mm Nut 2mm Set screw 3x4mm Washer 2mm Set screw 3x4mm 1 1 1 1 Install the servo Assemble the throttle servo to appropriate position in the fuselage B A A B Make sure...

Page 10: ...holes to the tail of fuselage and assemble the U style wire as illustration 39 42 41 8 40 38 43 Elevator servo Glue the elevator to the stabilizer by CA and epoxy Securely glue together If coming off during flights you ll lose control of your airplane which leads to accidents 2 2 Clevis Copper joiner 2 2 Screw 2x10mm Nut 2mm 2 Washer 2x5mm Steel wire Copper joiner Lock Nut 2mm Screw 2x10mm Ball jo...

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