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The Wright R-1820 Cyclone 9 was an engine widely used in American aircraft in the 1930s and 1940s. It was a single-row 9-cylinder air-cooled radial design. It had a displacement of 1,823 cubic inches (29.9 liters); the bore and stroke were 6.125" and 6.875".Models
- R-1820-1: 575 hp (429 kW)
- R-1820-22: 950 hp (708 kW)
- R-1820-33: 775 hp (578 kW)
- R-1820-45: 930 hp (694 kW)
- R-1820-53: 1,000 hp (750 kW)
- R-1820-60: 1,200 hp (895 kW)
- R-1820-86: 1,425 hp (1,063 kW)
Aircraft piston engines
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