[1] Calumet Aeronautics, owned and operated by Tommy Milton, designed an entry level Ultralight gyroplane.
The company name was changed to Calumet Motorsports due to the difficulty of purchasing bearings and other critical components.
[2] The Snobird Explorer was designed as a low-cost, entry-level autogyro, to comply with the US FAR 103 Ultralight Vehicles, including the category's maximum empty weight of 254 lb (115 kg).
It features a single main rotor, a single-seat open cockpit, tricycle landing gear and a twin-cylinder, air-cooled, two-stroke, single-ignition 40 hp (30 kW) Rotax 447 engine in pusher configuration.
The aircraft fuselage is made from a combination of composite material and aluminum and features a tall tail design to reduce engine-induced yaw.