Liberty 12 Model A (Lincoln) V-12 Engine

    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Liberty 12 Model A (Lincoln) V-12 Engine

    Co-designed in mid-1917 by Jesse Vincent of Packard Motor Car and Elbert Hall of Hall-Scott Motor Car, 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.

    1 of 5

    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Liberty 12 Model A (Lincoln) V-12 Engine

    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)

    2 of 5

    Usage Conditions Apply

    There are restrictions for re-using this media. For more information, visit the Smithsonian's Terms of Use page.

    IIIF provides researchers rich metadata and image viewing options for comparison of works across cultural heritage collections. More - https://iiif.si.edu

    View Manifest

    View in Mirador Viewer

    Liberty 12 Model A (Lincoln) V-12 Engine

    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)

    3 of 5

    Liberty 12 Model A (Lincoln) V-12 Engine

    Co-designed 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 Engine used only proven components to ensure workable engines in the shortest time. The Model L-8 was the first Liberty engine.
    4 of 5

    Liberty 12 Model A (Lincoln) V-12 Engine

    Co-designed 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 Engine used only proven components to ensure workable engines in the shortest time. The Model L-8 was the first Liberty engine.
    5 of 5

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.