The Kinner R-5 was a
enlarged B-5 with the bore increased from 4.625 to 5 inches and stroke
from 5.25 to 5.5 inches.
The U.S. Military designation for the Kinner R-5 was the R-540.
- R-540-1: 160 hp (119 kW)
- R-55: 160 hp (119 kw)
- Five cylinder, air-cooled, radial
- Displacement: 540 cubic inches (8.8 litres)
- Bore x stroke: 5 x 5.5 inches
- Meyers OTW
- Ryan PT-22 Recruit