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Pitts Python 

ARF  

ASSEMBLY MANUAL 

  

 

 

Kangke Industrial USA, Inc. 

49 E. Industry CT, Unit N, Deer Park, NY 11729  

http://www.kangkeusa.com

     E-mail: 

info@kangkeusa.com  

Tel: 1-631-274-3058   Fax: 1-631-274-3296  

This manual is the sole property of Kangke Industrial USA, Inc. Reproducing any part without the consent 
of Kangke Industrial USA, Inc. is a lawful violation.

  

 

Warranty:

 Kangke Industrial USA Inc. guarantees the kit to be free of defects in both material and 

workmanship at the date of purchase. This warranty does not cover any parts damaged by use or 
modifications. In no case shall Kangke Industrial’s liability exceed the purchase cost of this kit. Since 
Kangke Industrial has no control of final assembly and material used by user for final assembly, no 
liability shall be assumed or accepted for any damage resulting from the use by user of final user -
assembled products. This kit has been flight test for normal use. If the plane will be used for extremely 
high stress flying, the modeler is responsible for reinforcing the high stress points. Inspect this kit 
immediately after receiving it, report any missing and damaged parts within 7 business days otherwise 
the claim may be denied.

  

Summary of Contents for Pitts Python ARF

Page 1: ...arranty does not cover any parts damaged by use or modifications In no case shall Kangke Industrial s liability exceed the purchase cost of this kit Since Kangke Industrial has no control of final assembly and material used by user for final assembly no liability shall be assumed or accepted for any damage resulting from the use by user of final user assembled products This kit has been flight tes...

Page 2: ...n of this model is your responsibility and yours alone If you are a beginner or have never flown a model of this size and power you should not make the attempt without the help of an experienced pilot Specifications Length 69 in Wing Span Top Wing 73 in Bottom Wing 70 in Wing Area 1790 sq in Weight 18 20 lbs Engine Gas 50 70 cc Kit Contents Fuselage 1 Wing panel 4 Ailerons 4 Cowling 1 Canopy 1 Mai...

Page 3: ...WHILE THE CA TYPE HINGES ARE SATISFACTORY FOR A 50CC POWERED AIRCRAFT IT IS STRONGLY RECOMMENDED HAT YOU USE ROBART SCALE STEEL HINGED POINT HINGES FOR AIRCRAFT POWERED BY STONGER ENGINES They are simply to install and installation instructions are included with the point hinges A drill jig is also included with most hinge packages 3 THE INDICATED CG IS A GREAT STARTING POINT HOWEVER YOU MAY MOVE ...

Page 4: ...owerful servos have a higher power consumption rate than standard servos for this reason it is important the battery selected be capable of supplying the required amperage The switch harness must also be of the heavy duty type A lightweight switch may overheat and fail under high loads ASSEMBLY If you are familiar with the assembly of ARF type airplanes you will find the following assembly sequenc...

Page 5: ...list provided Remove all of the Fuselage wing and tail pieces from the sealed bags and let stand for 12 24 hours to clematis to your local conditions Depending on your location some wrinkles or bubbles may appear If they do they can be quickly remedied by using a heat gun We found the best way is to apply heated air from the blower at a 45 degree angle and continuously moving the blower in large c...

Page 6: ... then pull to ensure that the ailerons are firmly attached Affix servos with required extensions Attach Control Horn as shown using the 3 small screws Attach horn to servo using a 4 40 control rod and supplied control rod connector At the servo end I bent the rod and used a keeper This method is simple and secure Locate and install 8 3 X 18mm bolts in outer wing panels at strut locations Locate an...

Page 7: ...the wing panel separation lines To complete the bottom wing assembly locate the 2 bolt assemblies and temporarily assemble On final assembly mounting wings to fuselage you will install using lock tite or glue leaving sufficient space inside the Fuse to allow installation of bolt wheel and cotter pin TAIL SERVOS Install elevator servos on each sides of the fuselage Mount the servo arms pointing upw...

Page 8: ...groove near the end of the axle so that the tightened wheel collar will not come off The belly pan show in the picture above will be installed once you are satisfied that all construction is complete and to your satisfaction I left my pan off till after the first round of flights just to be sure Stabilizer and Fin Remove the elevators and hinges from the Stabilizer Assemble and center the stabiliz...

Page 9: ...ins into rudder Temporarily mount rudder to fin and mark control horn locations which should line up with line exits on each side of fuselage Attach the 2 control horn assemblies Attach the rudder portion of the tail wheel assembly to bottom of rudder Attach rudder to fin ensuring proper alignment with fin leaving about 3 32 inch gap between top of fin and rudder Remove pins from hinges ensure a s...

Page 10: ...ing the 2 springs between the tail wheel and rudder Ensure that the spring are secure however final install should be left until you have taken a couple of taxi runs Fuselage Upper Wing Cabanes Locate the 4 cabane pieces NOTICE that there are 2 long and 2 shorter cabanes The LONG cabanes are fitted to the rear positions while the longer ones fit in the front positions Slide the cabanes through the...

Page 11: ... note make sure that you identify and do NOT use 4 connectors that have larger bolt holes They will be required later For the moment do not tighten the connections You will do this AFTER you have installed the wires Bend the connectors so that they are pointing directly at the mating connector Once all cables are installed tighten the attachment bolts Apply a drop of medium CA on all cable ends an...

Page 12: ...g job easier make a template of the engine mount marking center and drawing similar cross lines as marked on firewall Tape template to firewall matching up the lines Drill the appropriate mounting holes Securely fasten engine to firewall I used safety nuts to ensure that the bolts will not come loose TEMPORARILY BALANCE THE PLANE Let s take a break from the engine installation and make sure the pl...

Page 13: ...nect the throttle and choke servos temporarily to your receiver and ensure proper operation Quite often you may have to limit the servo arm throws by adjusting your Tx settings Radio Installation You have previously balanced the plane by placing the receiver batteries etc loosely in the fuselage Now it is time to put everything in place Locate and install switches for radio and ignition To operate...

Page 14: ...L Test fit the cowl again to ensure that all ignition parts and exhaust will not interfere with the cowl Assuming that you do not have to carve up the cowl for your engine installation attach the bottom cowl scoop using the small screws provided I used additional silicon glue on the interior joint to provide additional strength Locate the 4 mounting blocks on fuselage I used masking tape to mark a...

Page 15: ...tach lower wings and establish required length of attachment threaded rod We allowed 1 inch of length and epoxied the threaded rod into the wing making sure that the keeper hole was vertical Once the attachments are solid complete installation with nut assemblies and cotter pins Attach outer panels of top wing secure by inserting bolts into the pre drilled holes on under side of wing center sectio...

Page 16: ... the control throws should be set to the following Surface Low High Elevator 1 up 1 up 1 down 2 down Rudder 1 4 throw 1 2 throw Aileron 1 up down 2 up dn It is important to double check that all controls move in the proper direction For 3 D flying you may consider using Aileron 2 inches Rudder Full throw Elevator Up to 4 inches WE STRONGLY SUGGEST that you consider using 30 expo on Low and High ra...

Page 17: ...long add power go around and try again don t try to force it to the ground Now its time to zero out the trims To do this measure the control location center the trim tab on the radio and adjust the servo horn for large changes the control clevis for small changes For example if after the flight the rudder is 3 16 inch to the right center the radio trim and adjust the clevis till the rudder once ag...

Page 18: ...f the main wing 1 8 at a time till the elevator is neutral If up elevator is required shave the rear of the wing saddle 1 8 at a time Engine Thrust Angle Up Down On a low pass 50 power crosswind go to 80 power and pull vertical at the same time As the model slows do not correct path with elevator If the model tries to loop add 1 16 inch shims to the top motor mount bolts If the model tries to push...

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