R-985 Aircraft Engine

The Pratt & Whitney R-985 Wasp Junior was an air-cooled radial aircraft engine with nine cylinders. It was an economy version of the SR-1340 Wasp with bore and stroke reduced to 5.1875 inches (132mm) and a rating of 450 hp (336 kW).

The R-985 was used on the OS2U Kingfisher.

References

Gunston (2006)

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