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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 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 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.
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 .
The BT was based on the revolutionary designs of American J. Walter Christie and a team from Morris Motors was sent to the United States to purchase a Christie tank and the rights to build more. The tank was given the General Staff designation "A13E1" and was delivered in late 1936, but the hull was too small and this led to a second British ...
8 + 2 Laps 10 9 Joe Tracy: Locomobile: 8 + 2 Laps 11 7 Karl Klaus Luttgen: Mercedes 120 8 + 2 Laps 12 19 Maurice Fabry: Itala 120 hp 7 + 3 Laps 13 17 J. Walter Christie: Christie: 7 + 3 Laps 14 14 H.N. Harding: Haynes: 7 + 3 Laps Ret 6 Elliott Shepard: Hotchkiss HH 6 Crankshaft Ret 5 Frank Lawell: Frayer-Miller: 4 Fan Ret 16 Aldo Weilschott ...
The following team was chosen to represent America: Joseph Tracy (90-hp. Locomobile), Hubert LeBlon (115-hp. Thomas), H.N. Harding (50-hp. Haynes), Frank Lawell (110-hp. Frayer-Miller), and J. Walter Christie (50-hp. Christie). "Only the first three covered the full course, and Lawell and Christie were given places on the team; the former ...