The Barnett J4B is a small gyroplane marketed in the United States by Barnett Rotorcraft for homebuilding. Originally flown as the J-3M with an open cockpit and fabric-covered sides, later versions have a fiberglass cockpit pod either partially or fully enclosing the pilot. Apart from the basic J4B, versions available in 2007 included the BRC540 (two seats side-by-side) and J4B2 (two seats in tandem).
Variants J-3M Original variant with Continental A65 engine.Taylor 1981, p. 121. J-4M Improved J-3M with Continental C85 engine. J4B Single-seat autogyro with 23 ft rotor. J4B-2 Two-seat variant of the J4B with a 25ft 4in rotor.
Specifications (typical J4B)
References Citations
Bibliography
Popular Rotorcraft Association (archived) External links Barnett Rotorcraft company website