Adams-Wilson “choppy” Hobbycopter Plans
AW Hobbycopter
The AW Choppy is one of the most famous of all homebuilt helis. Designed in the late 50's, The AW Choppy was designed to use commonly found materials that were readily available to consumers. The Choppy (also known as the Hobbycopter) was designed to use a motorcycle engine of about 50 hp for the powerplant. Various engines have been used. Some people have even used a snowmobile motor! More recent choppers commonly use an ultralight 2 cycle Rotax engine around 52 horsepower.
The AW Choppy is a single seat, open cockpit, frame fabrication helicopter.
Our plans contain the original 30 page AW Choppy plans that have been digitally edited and re-mastered. Plus TONS of extras!
Also includes:
2600 page book on Airplane Design
99 page book. "Amateur-Built Aircraft and Ultralight Flight Testing Handbook"
Various pictures of completed choppies
Adobe Acrobat Reader for viewing of files
Specifications:
General characteristics
Crew: one pilot
Length: 15 ft. (4.57 m)
Main rotor diameter: 21 ft. 6 in. (6.55 m)
Height: 6 ft. (1.83 m)
Main rotor area: 363 ft (34 m)
Empty: 300 lb (136 kg) can be built as an ultralight.
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/ft (5.3 kg/m)
Power/mass: varies
We are pleased to announce that you can buy complete kits, engines, or individual components (like the rotorhub assembly) from Vortec International! (Click here to visit) Also check out there choppy video! One last thing, compare prices!
NOTE: The digital package contains pictures, plus 39 pages of blueprints.
