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Adams-wilson Hobbycopter
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The Adams-Wilson Hobbycopter (later named the '''Choppy''') is a tiny single-seat open-framework Helicopter designed for Home-building , to be powered by a Motorcycle engine. Plans were first marketed in 1958 and have been revised and revived by various designers many times over the years.


SPECIFICATIONS (CHOPPY, TYPICAL)


General characteristics

  • Crew: one pilot

  • Length: 15 ft 0 in (4.57 m)

  • Main rotor diameter: 21 ft 6 in (6.55 m)

  • Height: 6 ft 0 in (1.83 m)

  • Main rotor area: 363 ft² (34 m²)

  • Empty: 300 lb (136 kg)

  • Loaded: 600 lb (183 kg)

  • Maximum takeoff: lb ( kg)

  • Powerplant: various - typically a 4-stroke triumph motorcycle engine



Performance

  • Maximum speed: 85 mph (136 km/h)

  • Range: miles ( km)

  • Service Ceiling : 8,500 ft (2,590 m)

  • Rate of climb: 950 ft/min (290 m/min)

  • Main rotor loading: 1.7 lb/ft² (5.3 kg/m²)

  • Power/mass: varies



RELATED CONTENT

Related development:
A-B Helicopters A/W 95 -
Ben Showers Skytwister

Comparable aircraft:

Designation sequence: