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The Christie M1931, known as the Combat Car, T1 in US Cavalry use and Medium Tank, Convertible, T3 in Infantry branch, was a wheel-to-track tank designed by J. Walter Christie for the United States Army using Christie's ideas of an aero-engine and the novel Christie suspension to give high mobility.
John Walter Christie (May 6, 1865 – January 11, 1944) was an American engineer and inventor. [1] He is known best for developing the Christie suspension system used for several World War II-era tank designs, most notably the Soviet BT and T-34 [3] tanks series, and the United Kingdom Covenanter and Crusader Cruiser tanks, as well as the Comet heavy cruiser tank.
The Christie suspension is a suspension system developed by American engineer J. Walter Christie for his tank designs. It allowed considerably longer movement than conventional leaf spring systems then in common use, which allowed his tanks to have considerably greater cross-country speed.
The success of the BT series, when observed by Fuller at Russian Army maneuvers influenced the British to buy a Christie M1931 tank, imported as a "Tractor", which led to Christie's suspension incorporated into British cruiser tank designs such as the A13 Cruiser Mk IV, Crusader, and others.
Christie revised the design and debuted the M.1921 a year later. The M.1921 had added suspension and the turret was removed and the guns placed within the hull instead, but it was also rejected on the grounds of being unreliable and under-powered. [1] Tests of the M.1921 continued until July 1924 [2] Going up and down 45º and 35º slopes.
Carden Loyd M1931 amphibious tank (29) - purchased in 1935. Carden Loyd M1936 (4) - Light two-man tank, purchased in 1936. Renault FT (100+) - purchased from Poland & France in 1920s & 1930s. Panzer I (10) - purchased from Germany in 1930s. T-26 (88) - Licensed copy of British Vickers 6-ton Tank, purchased from Soviets in 1938. Vickers 6-ton ...
This design was inspired by the American Christie M1928 and M1931 tanks, and was given the working name "A la Christie". The design work was based on available data, including advertising brochures, notes, and sketches that Captain Ruciński had obtained from Christie. By 1932, design drawings and a parts list were completed.
The Christie Direct Action Motor Car Company was a New York City-based automobile manufacturer. It was founded by race driver and inventor J. Walter Christie in 1904, and lasted until 1910. [ 1 ] [ 2 ]