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Napier Lion X1

Achieved fame by powering the Supermarine Sea Lion II to a Schneider Trophy win in 1922 again in 1927 in the Supermarine S5. This engine went on to more world records in Malcolm Campbells Bluebird of 1932 and Seagraves Miss England boat.

Year of introduction: 1918

Primary Application: Aircraft

Cylinders: 12

Max power: 335kW @ 2000 rpm

bore [mm]: 139.7

stroke [mm]: 130.175

Weight dry [kg]: 426

compression ratio: 5.8:1

cooling system: water

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