Rotorcraft and gyroplane information for the sport rotorcraft homebuilder and flying enthusiast. Sport and homebuilt autogyro (gyro, gyroplane, gyrocopter), kits, and training ...

Sport Copter Online, Home of the superior gyroplane for the enthusiast.

Manufacturer of composite rotors and rotor heads for Gyroplanes, Gyrocopters and Autogyros. Gyrocopter parts and kits.

American Autogyro, a division of Groen Brothers Aviation manufactures and distributes an amateur two-seat experimental gyroplane kit called the SparrowHawk III. This ...

Books, plans and videos on helicopters, homebuilt jet engines, aviation, and model aircraft.