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The PC21  by Skymaster 
 

The 1/4 PC21 produced by Skymaster is the result of years of R&D work and excessive testing. We are proud that 
you have decided to buy the best ARF 1/4 PC21 in the market today. We hope you enjoy your PC21 Please note 
that the photos show certain views from the prototypes. Some modifications and upgrades might have taken place 
by the release of the model. We have tried to produce a very scale replica of this turbo prop. This manual describes 
the assembling of  “ PRO” model. Landing gear and doors are factory installed. Before you start building and set-
ting-up your aircraft, please make sure you have read this instruction manual, and understood it. If you have any 
questions, please don’t hesitate to contact us.  Below are the contact details: 
 
 
Office Taiwan:

 

No.15, Min-San 3rd Street, Ren-Wu Area, Kaohsiung, 814, Taiwan, R.O.C.

 

TEL: +886 9 3299 7923  
FAX: + 886 7373 1215 

http://www.skymasterjet.com 
Sales : [email protected] 
Technical support : [email protected] 

 

SM © 2015 

1/4 Scale Almost-Ready-To-Fly RC Model 

Assembly and operations manual 

Spesifications 

 
Scale    :   1/4         Length :   112.5”:  (2850mm)       Span     :   90  ”:   (2288mm) 
Weight :   18Kg     Engine :   Jetcat SPT5       

Radio   :  12 Ch    (8 servos) 

Содержание PC21 Arf Pro

Страница 1: ...f PRO model Landing gear and doors are factory installed Before you start building and set ting up your aircraft please make sure you have read this instruction manual and understood it If you have an...

Страница 2: ...EALTH 7 GENERAL ASSEMBLY TECHNIQUES 7 RADIO EQUIPMENT ACCESSORIES 8 KIT CONTENTS 9 OPTIONAL PARTS 10 WING 11 STABILIZER RUDDER 12 FUSELAGE 13 FUEL CELLS 14 FUEL DIAGRAM 15 AIR SYSTEM 16 AIR DIAGRAM 17...

Страница 3: ...s reason we at Skymaster are unable to guarantee or provide a contractual agreement with any individual or company that the model you have made will function correctly and safely You as operator of th...

Страница 4: ...n the shade Extreme temperatures will damage the paint Finishing Your All White PC21 ARF PRO It is always best to fully assemble the model before painting By doing so no damage or glue prints will rui...

Страница 5: ...specially marked access points for the hooks of cranes Inspect your model before and after a rough landing Make sure all parts are safe and sound Inspect model before and after transport A sudden sto...

Страница 6: ...uality plane that is not so strong or safe Jet models require good gluing techniques due to the higher flying speeds and hence higher loads on many of the joints We highly recom mend that you use a sl...

Страница 7: ...t extra resin will add up to a heavy model Plan before you glue The glass cloth side of parts to glue should be sanded with 80 grit paper for best glue adhesion Support the fuselage on foam pads Skyma...

Страница 8: ...m the price of replacing the entire model REMEMBER The best equipment is only as good as the weakest link Ask your self if this servo or link or lead etc is worthy of my trust to protect my very large...

Страница 9: ...front and rear section Fin Rudders engine hatch Nose gear Main gear doors installed Wings left and right flaps aileron Elevator left and right Flap horns fearings Canopy assembly glass Wing tube Stabi...

Страница 10: ...2 x Pressure Gauges 1 x Electronic Brake Valve 5 x Air Tubing 10 x Quick Disconnect 8 x T pieces Accessory Set Fuel Tank Jettronic 2way 1 way valve Sequencer Control Brake Gear and Doors Photo 2 Phot...

Страница 11: ...and high of each hinge same When dry trail fit the hinge fairings Glue in place Secure flap servo with aluminum brackets Mark slots for flap pushrod Dremel slots to clear push rods Glue flap horn to...

Страница 12: ...Mark location of horn Dremel hole to clear horn refit horn Fit horn to servo bracket via root of stab Mark location for elevator horn Cut slot for horn Glue horn with 5 minute epoxy Make sure the hor...

Страница 13: ...dy up the air line Use quick disconnects between wing and fuselage Check operation of landing gear and doors Install JR DS8511 steering servo Bolt with 4 x M3 bolts and lock nuts Centre servo and conn...

Страница 14: ...rners of inside of tanks Fit to main tank Mark pipes for inlet and outlet Plumb tank using diagram on next page Fill tank and check for leaks Secure tank with ply bracket and 2 bolts Drain tank with t...

Страница 15: ...FUEL CELL DIAGRAM P 15 Assembly Operation Manual Photo 21...

Страница 16: ...ystem by using color air tubing T all same color tubing together until a single pipe emerge Fit electronic valves sequencers on tray The air system will consist of Air up Air down retracts 2 Air up Ai...

Страница 17: ...AIR DIAGRAM P 17 Assembly Operation Manual...

Страница 18: ...follow the instructions supplied with your turbo prop Run all turbine wires and power cables on opposite side of servo wires Install fuel pump close to UAT We recommend to make use of a mechanical shu...

Страница 19: ...fuselage Secure rear of cockpit with 2 screws Check that canopy clear the cockpit Trim if needed Install pilot If you ordered the all white you will need to cut glass and glue after painting Use non...

Страница 20: ...21 basically consist of 7 circuits 1 Servo wires 2 Power cables 3 Data cables 4 Pneumatic pipes 5 Air pipes 6 Fuel pipes 7 RX cable Satellite Receivers Please try and separate these circuits as far as...

Страница 21: ...location of CG unless you are experience and have some feel of model before CG 175mm from leading edge Dry weight will be between 40 and 45 lbs depending equipment 100 120 psi for pneumatic system Ma...

Страница 22: ...stics Select the flaps to the takeoff position there should be no pitch change Ex tend the gear and select full landing flaps adjust the power to maintain level flight and a speed of about 80 90mph Cl...

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