|Type:||9-cylinder, air-cooled, radial, piston|
|Displacement:||985 cu. in.|
|Power Output:||300 - 450 hp based on model|
Pratt & Whitney developed the R-985 Wasp Junior as a smaller version of the R-1340 Wasp to compete in the market for medium-sized aircraft engines. Wasp Juniors have powered numerous smaller civil and military aircraft, including small transports, utility aircraft, trainers, agricultural aircraft, and helicopters. More than 39,000 were produced from 1929 until the end of production in 1953 It was considered the best engine in its class and many Wasp Junior engines are still flying today.
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