The 1969 W-4 Hot Canary single place open cockpit biplane was intended for pylon racing in the sport biplane class. Featuring negative stagger, the W-4 was registred N4777W.

 

Engine: Lycoming O-290D, 125hp

Wingspan: 14'9"

Length: 17'0"

Useful load: 314 lb

Max speed: 195 mph