The Wittman D.12 Bonzo NX13688 was designed and built by Steve Wittman as a contender for the prestigous Thompson Trophy, built in 1934, raced 1935-39, the last to use a water-cooled engine. It was ultimately capable of over 325 mph.
The bright red Bonzo, fully restored, graces the EAA AirVenture Museum in Oshkosh.
Engine: 435hp Curtiss D-12
Wingspan: 15’4″
Length: 17’6″
Seats: 1
All Aero 