In 1919 Ed Heath designed and built his Feather biplane, designated the MA-2. It was his first ultralight airplane.
This was a single place plane with a two-cylinder Thor motorcycle engine modified by Heath’s company.
The propeller was fitted with two auxiliary blades, to act as a fan for engine cooling. The landing gear was equipped with a third wheel, extending out in front to prevent nose-overs.
Heath planned to sell these planes $1,200 ready to fly, $990 less engine and $250 for the kit of materials to build your own (less engine). The engine could be bought separately for $250.
Before Heath could get the Feather into production, the bottom dropped out of the airplane market with WW1 surplus aircraft available.
Engine: Thor 76 cu.in, 18 hp
Wingspan: 20 or 24 ft
Weight: 270 lb
Cruise: 45 mph
Seats: 1
All Aero 