The Easy Riser was developed by Larry Mauro from the earlier Kiceniuk Icarus II biplane hang glider. An engine was installed by John Moody in 1975 so the glider could be launched from flat terrain.
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 exhibited poor pitch stability so a horizontal stabilizer and elevator was added. Finally on later versions the tip rudders were replaced with a tail-mounted rudder.
The Easy Riser is constructed with an aluminum structure and stamped ribs, covered in doped aircraft fabric covering, Mylar or other coverings. The pilot sits on a fabric sling seat. Engines used include the 11 hp (8 kW)McCulloch MAC-101, 15 hp (11 kW) Hirth F-36 and Solo 210.
Easy Risers were produced in large numbers until the ultralight market downturn of the early 1980s when the type was taken out of production. Later the unpowered glider version was put back into limited production.
In 1979 Larry Mauro installed solar cells and an electric motor on a stock Easy Riser and the resulting Mauro Solar Riser become the first solar powered aircraft to carry a person aloft.
|Length:||9 ft 0 in (2.74 m)|
|Height:||4 ft (1.2 m)|
|Wingspan:||30 ft 0 in (9.14 m)|
|Wing Area:||170 sq t (160m2)|
|Empty Weight:||120 lb (54 kg)|
|Wing Loading:||1.88 lb/sq ft (9.2 km/m2)|
|Stall Speed:||20 mph (32 km/h; 17kn)|
|Service Ceiling:||9,000 ft (9.2 km/m2)|