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The Christie M1931 originated as the M1928, which used Christie's suspension, and had the ability to run on its tracks or the wheels.The M1928 was demonstrated unofficially to the US Army by traversing a route at an average speed of 45 km/h (28 mph); by contrast the US Army's T1E1 tanks – expected to replace their WWI-era M1917 light tanks – averaged 16 km/h (9.9 mph) over the same route.
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.
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 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.
With the 2025 Academy Awards airing Sunday, March 2 (ABC and Hulu, 7 p.m. ET/4 PT), we look back at the biggest Oscar snubs of all time.
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 ...
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 ]