Pratt & Whitney R985 – Great Rivers Imaging

Pratt & Whitney Wasp Jr. engines

Close up of two of the three Tri-Motor Ford engines. The Wasp Jr. R-985 was the third engine type designed by Pratt & Whitney Aircraft, following the Wasp R-1340 and Hornet R-1690, all of which were nine-cylinder engines. The Wasp Jr. was designed to compete at lower power and was virtually a Wasp of reducedContinue reading “Pratt & Whitney Wasp Jr. engines”