in 1927, the Scarab gained quick acceptance when it came
close to sweeping the 1928 U.S. National Air Races.
The U.S. military designation for the Warner
Scarab was the R-420.
|Radial piston engine|
|Displacement: 422 cubic inches (6.9 liters)|
|Bore x stroke: 4 1/4 x 4 1/4 inches|