Pratt & Whitney R-1830-86 Twin Wasp

Pratt & Whitney R-1830-86 Twin Wasp aircraft engine at the New England Air Museum


Type:   14-cylinder, 2-row, supercharged, air-cooled, radial, piston
Displacement:   1,829 cu. in.
Weight:   1,250 lbs.
Power Output:   Up to 1,350 hp depending on model
NEAM Id:   5
Location:   B-29 Hangar

The Twin Wasp was Pratt & Whitney's first twin-row design. It delivered up to 1,350 horsepower and featured a new master rod bearing to withstand stresses at higher ratings. Due to the demands of World War II 173,618 were manufactured and it may be the most produced aviation piston engine in history. It powered 50 different transport, fighter, bomber and attack aircraft including two of the most produced aircraft ever built, the B-24 heavy bomber and the DC-3/C-47 transport. A version was also used in the Museum's VS-44A.

This example, a 1,100 hp model with two-stage, two-speed supercharging, powered the Grumman F4F-4 and Eastern FM-1 Wildcat

Send in this Contact Reference Form if you have any information or comments on the Pratt & Whitney R-1830-86 Twin Wasp.

© New England Air Museum 2016-2021
36 Perimeter Rd., Windsor Locks, CT, 06096