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Summary of Contents for Composite-ARF Pitts S12
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Page 1: Instruction Manual
Composite-ARF Pitts S12 techsupport@composite-arf.com Instruction Manual Composite-ARF Pitts S12, 2.7m span ‘TAVS Technology’ version: Preliminary... -
Page 2: Liability Exclusion And Damages
The Pitts S12 kit is 90% pre-fabricated at our factory, with the majority of the assembly already completed - only requiring engine/exhaust system, R/C components and ancillaries to be installed by the owner. - Page 3 Make sure that you operate your Pitts S12 according to the AMA rules, or those laws and regulations governing model flying in the country of use.
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Page 4: Important/General Notes
Composite-ARF Pitts S12 techsupport@composite-arf.com Important/General Notes Elastic Hinges: The ailerons are hinged already for you - laminated in the mould and attached to the wing with a special nylon hinge- cloth, sandwiched between the outer skin and the foam. This nylon hinge is 100% safe and durable. You will never have to worry about breaking it, or wearing it out. - Page 5 Accessories This is a list of the main things you may need to get your Composite-ARF Pitts S12 in the air. Some of them are mandatory, some of them can be chosen by you. What we list here are high- ly recommended parts, and have been thoroughly tested.
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Page 6: Landing Gear
Composite-ARF Pitts S12 techsupport@composite-arf.com Building Instructions Landing Gear Carbonfibre landing gear leg 120-125mm The landing gear main legs have been Ø wheel installed for checking in the factory, and 2 pieces wheelpant only need to be bolted into place for milled plywood completing the wheelpants and wheels. - Page 7 Composite-ARF Pitts S12 techsupport@composite-arf.com Cockpit Frame and Canopy The moulded fibreglass canopy frame has already been trimmed and installed at the factory, with the retaining system completed, and you only need to trim and glue in the clear canopy. Fitting clear canopies is always a little bit tricky, but this is the method we use: Sand the inside edges of the fibreglass canopy frame carefully with rough sandpaper, to ensure a perfect fit of the canopy inside.
- Page 8 Composite-ARF Pitts S12 techsupport@composite-arf.com or JR8511/8611 (or Futaba 9351/9152), as shown in the photos. In addition we strongly recom- mend that you use metal servo output arms, such as the 1.5” SWB ‘Double-Loc’ arms that are shown in the photos.
- Page 9 Composite-ARF Pitts S12 techsupport@composite-arf.com years. Fit 4 hi-torque digital servos (JR8411 or 8511/8611 or Futaba 9351 recommended) into the cnc milled phenolic plate provided, as shown in photos P13 and 14. Mount the plate onto the carbon/plywood main board using the rubber grommets and 2.9mm Ø x 13mm screws provided in the same manner as the elevator servo set-up.
- Page 10 Loctite to make sure that they cannot come loose. See photos P21 and P26. Flying Wires The flying wires for the Pitts S12 take, perhaps, 75% of the flying loads. Therefore, the greatest care must be taken assembling and soldering the flying wires.
- Page 11 Composite-ARF Pitts S12 techsupport@composite-arf.com We used hard silver solder and flux with a very small gas blowtorch, but you could even use lo-temp silver solder, such as the excellent ‘STAY-BRITE’ brand available in the USA in most hardware stores. Just remember to clean off the joints very thoroughly after soldering with Acetone or equivalent to remove all traces of flux that would, otherwise, corrode the parts over time.
- Page 12 Composite-ARF Pitts S12 techsupport@composite-arf.com Incidences As a datum line for checking/setting all incidences you can use the fibreglass side rails of the cockpit opening, which are at 0 degrees. The nominal incidence for both the top and bottom wings is 0° degrees, and this has been proven to be the best set-up after many flights with the 2 prototypes.
- Page 13 Composite-ARF Pitts S12 techsupport@composite-arf.com horizontal mounting hole centres). Hold engine in position to check that spinner will be in centre of cowling, before drilling the holes for M6 x 50 bolts, which go into M6 blind-nuts on the inside of the motor dome. You will need to...
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Page 14: Final Check
Composite-ARF Pitts S12 techsupport@composite-arf.com tions can damage a servo quite quickly. The ignition unit can be secured on top of the motor dome as shown in the photos. The ignition battery was fitted inside the motor dome on a foam pad, and retained using 3 cable-ties. - Page 15 We hope that you enjoyed the final assembly of your Pitts S12. Please let us know, if you think that any hardware is missing or inadequate. We have tried to make this airplane as complete as possible, and with good feedback from customers you will help us to continue making good things even better.
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Page 16: Hardware Bag
Composite-ARF Pitts S12 techsupport@composite-arf.com Appendix Packing List - Pitts S12 kit. Main Items Quantity Description Fuselage Cowling (bottom half) Canopy Frame (and fibreglass strip for hoop) Top right wing (with 2 servo hatches) Top left wing (with 2 servo hatches) - Page 17 Composite-ARF Pitts S12 techsupport@composite-arf.com Wing pack Quantity Description Allen bolt M6 x 50mm (to secure top wings to centre section) Flying wire (8 metres) Clevise (aluminium) M3 Allen bolt M3 x 25mm Allen bolt M3 x 12mm Lock nut M3...
- Page 18 Composite-ARF Pitts S12 techsupport@composite-arf.com Elevator Linkage pack Quantity Description Allen bolt M3 x 20mm Lock nut M3 Ball Link M3 Nut M3 All thread M3 x 60mm Wood Dowel 6mm Ø x 50mm Brass tube 4Ø x 50mm Pushrod covers (plastic, painted)
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