Liberty L-4

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The Liberty L-4 was a 4-cylinder, water-cooled, inline, aero-engine developed in the United States during World War I. The Liberty L-4 was an experimental engine of 102 hp, built by the Hudson Motor Co. and intended primarily for use in training airplanes. Only two were produced since other types of engines were available and already in production. It is unknown if the L-4 was ever test-flown.

This article incorporates text from http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=835, a public domain work of the United States Government.

[edit] References

• http://www.nationalmuseum.af.mil/factsheets/factsheet.asp?id=835
• Gunston, Bill (1986). World Encyclopedia of Aero Engines. Wellingborough: Patrick Stephens, 106. 

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