The first original design by Orin Welch was the 1927 OW-1 open cockpit biplane. Four were built; N817 c/n 103, N4205 c/n 100, N5105 c/n 101, and N6838 c/n 104.
The first OW-2 was a modified OW-1.
Engine: Curtiss OX-5, 90hp
Wingspan: 31’2″
Length: 24’2″
Max speed: 105 mph
Cruise speed: 95 mph
Stall: 40 mph
Seats: 3
All Aero 