Wright R-1820 Cyclone
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Wright R-1820 Cyclone

Engine
Utility 🔧 Engine 🚂 Foreign Design 📦

The Wright R-1820 Cyclone is an American nine-cylinder, single-row, air-cooled radial engine that was widely used during World War II. It was developed by Curtiss-Wright from the earlier R-1750 Cyclone, featuring internally cooled exhaust valves, a forged aluminium crankcase, and a single-speed supercharger. It could produce up to 1350 hp at 2500 rpm, depending on the model and configuration. It powered various famous aircraft, such as the Boeing B-17 Flying Fortress, the Douglas DC-3, and the Sikorsky H-34. It was also produced under license in a number of Allied, and later NATO countries.