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Pratt & Whitney R-1830 Twin Wasp

The Engine  Specifications

In 1927, Pratt & Whitney began researching twin-row radial engines.  One result, the R-1830 Twin Wasp, first flew in 1931.  It was one of the most efficient and reliable engines of the 1930s.

The R-1830 was in production from 1931 through 1951.  Over 173,000 were produced, more than any other aircraft engine (per Pratt & Whitney).

14 cylinder, air-cooled, two-row radial
displacement: 1,830 cubic inches (30 liters)
Bore x stroke: 5.5 x 5.5 inches
USMC Air-Ground Museum
Quantico, VA
June 2001
 Models  Used by
R-1830-9: 950 hp (708 kW)
R-1830-S1B3G: 1,000 hp (745 kW)
R-1830-S1C3G: 1,200 hp (895 kW)
R-1830-13: 1,050 hp (783 kW)
R-1830-24: 1,050 hp (783 kW)
R-1830-36: 1,200 hp (895 kW)
R-1830-65: 1,200 hp (895 kW) w/turbocharger
R-1830-92: 1,200 hp (895 kW)
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page updated 26 September 2009



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Kenneth W Shanaberger 2000 - 2010