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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 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.
Christie-derived suspension on Polish 10TP tank: roadwheel (1), spring (2) and arm (3) T3E2 tank with Christie suspension crossing an obstacle during tests in 1936 The Christie suspension is a suspension system developed by American engineer J. Walter Christie for his tank designs.
The United States Army ordered a single example for evaluation on 22 November 1919, which was approved on 8 June 1920. [ 2 ] The tank featured four large road wheels with rubber tires on the corners of the hull, a central bogie on each side with a pair of road wheels with coil springs which could be lowered or raised depending on if tires or ...
The Front Drive Motor Company was an American manufacturer of commercial vehicles founded in 1912 by J. Walter Christie. [ 1 ] [ 2 ] There was no connection to the Front Drive Motor Company of the same name from Missouri .
In the early 1930s, American engineer J. Walter Christie experimented with the concept of a self-powered flying tank. Christie's design had a detachable set of wings attached to the roof of a lightly armoured tank and a propeller driven by the tank's engine. A prototype without wings was constructed, but the concept was never developed further ...
A Waffenamt-Prüfwesen 1 report estimated [60] that with the T-34 angled 30 degrees sidewards and APCBC round, the Tiger I's 8.8 cm KwK 36 L/56 would have to close in to 100 m (110 yd) to achieve a penetration in the T-34's glacis, and could penetrate the frontal turret of a T-34-85 at 1,400 m, the mantlet at 400 m, and the nose at 300 m [61 ...
The Christie Company was originally called Christie Iron Works, but the name was changed in 1906. Christie was America's first exponent of front-wheel drive. [2] In 1904, he took a four-cylinder, 30 hp racer to Daytona Beach with an early front-wheel drive system. In all, six racers were built, two with 60 hp engines. [2]