High Quality Content by WIKIPEDIA articles! The Helicycle is a single-seat, single, semi-rigid main rotor helicopter powered by a turboshaft engine. Manufactured by Eagle R&D in Nampa, Idaho as a kit, the aircraft is intended to be assembled by the owner and is considered a homebuilt aircraft. The Helicycle was conceived and designed by B.J. Schramm, the founder of Rotorway International.