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Many of the early ultralights used a "weight shift" method of control, requiring the pilot to push a control bar to shift the center of gravity of the aircraft. The Weedhopper differed from most other ultralights of the period in that it has a control stick which moves the rudder and elevator, giving it two axis control in pitch and yaw.
Early powered versions consisted simply of a motor added to the foot-launched hang glider version with control by a combination of weight shift for pitch and tip rudders for roll and yaw, with the tip rudders used together as air brakes. Because many pilots could not run fast enough to achieve take-off, wheeled tricycle gear was added.
The aircraft was designed to comply with the Fédération Aéronautique Internationale microlight category and the US light-sport aircraft rules. [2] [3] It features a strut-braced hang glider-style high-wing, weight-shift controls, a two-seats-in-tandem open cockpit, retractable wheeled tricycle landing gear and dual floats and a single engine in pusher configuration.
The aircraft has a maximum gross weight of 363 kg (800 lb). In its single-seat configuration and when equipped with a lightweight engine, it complies with the US FAR 103 Ultralight Vehicles rules, including the category's maximum empty weight of 254 lb (115 kg).
The Seahawk features a choice of wings cable-braced hang glider-style high wing, weight-shift controls, a two-seats-in-tandem, open cockpit, a trimaran hull which was designed and built in Italy and a single engine in pusher configuration. [1]
The Ascender III-A is similar to the original Pterodactyl Pfledge. It lacks a canard and pitch control is by weight shift, although it incorporates some refinements, such as nose wheel steering. The 2003 price was USD$6800. [1] [2] [13] DFE Ascender III-B
Its wing is supported by a single tube-type kingpost and uses an "A" frame weight-shift control bar. The powerplant is an air-cooled, single-cylinder, two-stroke, 27 hp (20 kW) Cisco C-Max engine. The aircraft has an empty weight of 26 kg (57 lb), including the powerplant, but excluding the wing. It has a gross weight of 155 kg (342 lb). [1]
The Star Trike was designed in 1980 has been in production ever since. It fits the Fédération Aéronautique Internationale microlight category. The design features a cable-braced hang glider-style high-wing, weight-shift controls, a single-seat or a two-seats-in-tandem open cockpit, tricycle landing gear with wheel pants and a single engine in pusher configuration.