Completely unique and original
Black Fly Tandem 1-Seat Helicopter Project
Tandem Single-Seat Helicopter.
This is a completely unique and original design. The creator of
this exceptional and well-built helicopter died before
installing an engine for flight. Aside from an engine the
helicopter is essentially complete. Instruments: CHT, RPM,
Volts; wheel OD: 10-1/2".
The choice of engine would likely
be a 50-hp
Rotax 503 or similar. Helicopter will qualify as an
special and unique feature of this helicopter is its twin-bladed
tandem design. The twin rotors, side-by-side, spin in opposite
directions, cancelling torque and eliminating the need for a
tail rotor. The design incorporates full collective and cyclic
control, plus a foot-controlled front wheel. Helicopter is located in
7 ft-8 in; height: 6 ft; width: 6
ft.; empty weight (est., with engine): 250 lbs; max. payload: about 225 lbs;
engine/horsepower: Rotax 503 or similar/50+; fuel
5 gal.; max. speed:
63 mph (ultralight limit);
cruise: 55 mph; flight duration (est.):
about 1 hour;
altitude (est.): about 9,000 ft.
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