Liberty 12 Model A (Lincoln) V-12 Engine
The Liberty's purpose was American mass production of standard engine units when the U.S. entered World War I. Co-designed in a week in mid-1917 by Jesse Vincent of Packard Motor Car and Elbert Hall of Hall-Scott Motor Car, with a planned series of 4-, 6-, 8-, and 12-cylinder models, the Liberty used only proven components to ensure workable engines in the shortest time. The Model L-8 was the first Liberty engine. However, power requirements made it obsolete before entering service, leading to the twelve-cylinder Liberty.
The Liberty's success was due entirely to the fact that the best engineers, production experts, and manufacturing facilities were provided to the Government. Leading automotive manufacturers, including Ford, Lincoln, Packard, Marmon, and Buick, built the engines.
The Liberty 12 Model A powered numerous aircraft including the de Havilland DH-4, the Navy-Curtiss NC-4, Fokker T2, Loening Model 23, Douglas World Cruiser, Douglas M-1 Mailplane, and Curtiss H-16 flying boat.
Found in collection. Donor unknown at this time. Found on NASM premises
Type: Reciprocating, V-type, 12 cylinders, Liquid cooled
Power rating: 298 kW (400 hp) at 1,800 rpm
Displacement: 27 L (1649 cu in)
Bore and Stroke: 127 mm (5 in) x 178 mm (7 in)
Weight: 357 kg (786 lb)
- Country of Origin
- United States of America
- Elbert J. Hall
- Jesse G. Vincent
- Lincoln Motor Company
- Circa World War I
- PROPULSION-Reciprocating & Rotary
- Metal, plastic
- Length 171.1 cm (67.375 in.), Width 68.6 cm (27.0 in.), Height 105.4 cm (41.5 in.)