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to develop his "Convertible
Suspension", which allowed a vehicle to run on either tracks or wheels. Most tanks of the time period weren't durable enough to be drive to the front on their own, so instead were delivered by trucks and then driven to where they were needed. The Convertible Suspension was
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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 tracks were used, and it was driven by an axle at the rear. The hull was divided
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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. Tests of the M.1921 continued until July 1924
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designed to overcome this deficiency by allowing for high speed on roads using tires and then having the tracks installed on the tank before entering the battlefield. After developing several vehicles which culminated in the M.1919. The
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and underwent tests until 21 April 1921. The Army wasn't impressed by the new tank, citing the lack of suspension (and thus bumpy ride), as well as the lack of speed needed for new military doctrines being developed.
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53:. On top of the main turret a smaller, semi-spherical turret housed a .30 caliber machine gun. Both turrets could move independently of the other.
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into sections for the driver, gunner, and engine. On top of the hull was a flat-topped, round turret armed with the U.S. version of the
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ordered a single example for evaluation on 22 November 1919, which was approved on 8 June 1920.
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https://www.militaryfactory.com/armor/detail.php?armor_id=1093
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Armament: One 57 mm Gun M1, one .30 caliber machine gun
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Engine: Christie 6-cylinder 120 hp water-cooled engine
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Christie used the experience gained before and during
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Max Speed: 7 mph (tracks), 13 mph (tires)
56:In February 1921 the tank was delivered to the
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72:Going up and down 45º and 35º slopes.
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197:Interwar tanks of the United States
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80:AD1116719-020 M1919 Christie tank
202:Experimental and prototype tanks
20:was a prototype tank built by
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165:"Christie Medium Tank M1919"
144:"M1919 Christie Medium Tank"
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26:Front Drive Motor Company
90:Length: 18 ft 2 in
58:Aberdeen Proving Ground
32:History and Development
99:Weight: 29,762 lb
96:Height: 8 ft 9 in
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93:Width: 8 ft 6 in
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51:Ordnance QF 6-pounder
111:Range: 40.4 mi
18:Christie Model 1919
120:Track width: 15 in
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43:United States Army
22:J. Walter Christie
117:Armour: 0.25-1 in
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38:World War I
191:Categories
125:References
28:in 1919.
102:Crew: 3
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16:The
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