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ADAMS-WILSON XH-1 HOBBYCOPTER
Original helicopter specs.
TYPE: Single-seat home-built helicopter.
ROTOR: Two-blade main rotor of solid spruce construction. Aerofoil section NACA 0012. Chord 0.20m. Cyclic and collective pitch controlled by swash-plate. Formed aluminium two-blade tail rotor.
ROTOR DRIVE: Engine-to-gearbox by chain; gearbox-to-main rotor by direct shaft; gearbox-to-tail rotor by belt. Main rotor r.p.m. in flight 360. Tail rotor r.p.m. in flight 1,800.
FUSELAGE: Aluminium tube structure, bolted together.
LANDING GEAR: Tubular skids, with retractable ground-handling wheels.
POWER PLANT: One 40-46hp Triumph 650cc motorcycle engine. Fuel in single tank above engine with capacity of 4.5 litres for training, 11.4 litres normal. Oil capacity 3.8 litres.
ACCOMMODATION: Single fiberglass bucket seat ahead of rotor drive shaft.
This company was formed by Mr. T.G.Adams and Mr. Paul Wilson to market plans for a very simple single-seat helicopter named the HobbyCopter, of which they have built a prototype. This new successfully for the first time in November, 1958 and more than 100 sets of plans have since been sold to amateur constructors throughout the world. The company also supplies kits of parts for the Hobby-Copter.
Ben Showers Aero "Skytwister" helicopter
Ben's rework of the original "Choppy" homebuilt helicopter. He was one of the pioneers of adapting the lightweight two stroke engine to this craft along with innovations of the "tube-tail" and various other refinements to the landing gear and drive systems.
Technical data for "Skytwister" helicopter
Engine: 1 x Rotax 582 rated at 48.6kW, main rotor diameter: 6.55m, length: 4.80m, height: 2.03m, take-off weight: 302kg, empty weight: 144kg, max speed: 137km/h, cruising speed: 105km/h
A/W 95
(from Doug's old website - now redirected to Vortech)
Affordable Helicopter
The A/W 95 home built helicopter is a modern up to date version of the Adams Wilson Choppy helicopter that was designed in the late 5os. The A/W 95 was designed to use modern state of the art materials to replace the obsolete and hard to find components used in the original design.
The A/W 95 helicopter is a single seat, open cockpit and frame fabrication helicopter.
This helicopter features a Rotax 503, 52 Hp, air cooled engine with dual carburators and ignition, 2 cycle.
The main rotor is a design from A-B Helicopter Design. Its all aluminum NACA 0012. The tail rotor is preformed aluminum.
The lower air frame is welded 4130 steel tube and the upper frame and tail boom is 6061 aluminum.
Some of the modifications and up dates include:
Replacing the original 650cc Triumph motorcycle engine with a light weight 2 cycle engine along with redesigning the helicopter air frame to accommodate the modern more power to weight power plant.
Redesigning the landing gear for ease of construction and simplicity.
Redesigning the swash plate flight control system to both simplify construction and lengthen the component's life.
Redesigning the tail rotor and it's control system for ease of construction and longer life.
Redesigning the rotor grips allowing the A/W 95 helicopter to use the all aluminum A-B rotor blades for there smooth flight characteristics and affordable cost.
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