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advanced scale models Pitts Special Instruction Manual

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INSTRUCTION MANUAL

A semi scale model of the
world's leading competition
aerobatic and airshow
display aircraft.
History of the Pitts Special
It is hard to believe that it was as long ago as 1943 when Curtis Pitts built the first of a series of aircraft
that would dominate competition aerobatics throughout the 70s and 80s. Christened the 'Pitts Special',
it went on to be the most successful and easily recognised American-built aerobatic design. It was
certainly evolutionary and because of its small size, light weight, short wingspan and extreme agility, it
remained unbeaten until it was finally toppled by the Russian Yak-50.
While there have been many versions of the Pitts Special - in both single and two seat versions - it is
widely accepted in the aviation community that the Pitts Special is THE standard by which all other
aerobatic planes are judged - and few have ever matched. The design has been continuously refined,
however, the current Pitts Specials still remain close to the original in concept and in actual design... a
testament to the genius of Pitts' original concept.
Wingspan: 5.28 m (17 ft 4 in) • Length: 4.72 m (15 ft 6 in) • Weight: 290 kg (640 lb)
• Speed (max): 253 km/h (157 mph) at sea level • Power plant: 93.2-kW (125-hp) engine
Pitts
Pitts
Special
Special
Span:
Length:
Engine:
Radio:
_____ Page 1 _____
Technical Specification
1588mm (62.5 in)
1372mm (54 in)
1.20 cu in Four Stroke
4 Channel with four high torque
and one standard servo

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Summary of Contents for advanced scale models Pitts Special

  • Page 1: Instruction Manual

    Russian Yak-50. While there have been many versions of the Pitts Special - in both single and two seat versions - it is widely accepted in the aviation community that the Pitts Special is THE standard by which all other aerobatic planes are judged - and few have ever matched.

  • Page 2: Safety Warning

    Additional Items Required to Complete the Pitts Special: • 2 x Standard size high torque, metal geared servos for aileron control • 2 x Standard size high torque, metal geared servos for rudder and elevator • 1 x Standard servo for throttle •...
  • Page 3 THE WINGS STEP 1. Glue each of the aileron hinges (four per aileron) half way into the wing training edges using thin cyano ensuring the glue soaks into the hinge and the surrounding wood. STEP 2. Fit teh ailerons to the wings ensuring gap-free hinge lines, making sure the ailerons are centred between the root and tip, and that each is free to move through their entire travel.
  • Page 4 STEP 6. Turn the wing over and clip off any excess screw length flush with the horn backing plates as shown. Ensure that the extended aileron servo leads cannot fall back into the wings. UNDERCARRIAGE STEP 7. Roughen the inside of each wheel spat and glue the plywood reinforcement squares in place as shown.

  • Page 5: Installing The Engine

    STEP 10. Locate the tailwheel and the three self tapping mounting screws. Pilot drill the holes, then attach to the rear of the fuselage ensuring that the pivot point is in line with the rudder hinge line. STEP 11. Mount the main undercarriage using the three cap head screws supplied.
  • Page 6 STEP 15. Clamp your engine to the mount ensuring that the front of the prop driver is 130mm in front of the bulkhead. Mark the engine mount though the engine’s mounting lugs as shown and remove the engine. STEP 16. Drill clearance holes in the engine mount for the mounting bolts supplied.
  • Page 7 UNDERWING FAIRING STEP 19. Temporarily bolt the lower wing in position and tape the underwing fairing in place, ensuring that it is centred and level with the fuselage at the front and rear. Mark the fairing’s position on the wing using a felt tipped pen. STEP 20.

  • Page 8: Final Assembly

    STEP 24. Use the closed loop components to complete the rudder linkage as shown. The elevators use a pre- formed Y shaped pushrod operated from a single servo as shown. Test the free operation of the elevators and rudder. FINAL ASSEMBLY STEP 25.
  • Page 9 STEP 29. Mount the switch through the fuselage side and the receiver on dense foam tie-wrapped to the mount shown, which is screwed into place on the servo tray after the fuel tank has been fitted. If fitting a high capacity receiver battery (recommended), you will be able to mount this in the bay behind the fuel tank.
  • Page 10 Flying Tips Just like the full-size, the Pitts Special is a highly manoeuvrable and aerobatic biplane. As with any close coupled biplane it should not be slowed too much on landing until familiar with the model’s characteristics.

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