Mechanical engineer Bill Piper, of Los Angeles, California, props the 72 hp McCulloch engine on the Piper-Marriott autogyro as aeronautical engineer Ed Marriott prepares for a flight in early 1964.
The rotor blades have a steel spar and plywood skin.
Engine: 72 hp McCulloch
Rotor diameter: 20 ft
Length: 9 ft 9 in
Empty weight: 225 lb
Gross weight: 450 lb
Top speed: 85 mph
Cruise: 60 mph
Range: 120 mi
All Aero 