M1922 medium tank

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Medium Tank M1922
The M1922 used cables to join the individual track links
Type	medium tank
Place of origin	United States
Service history
In service	1922–1928
Used by	US
Production history
Designer	United States Army Ordnance Department
Designed	1922
Manufacturer	Rock Island Arsenal
No. built	1
Specifications
Mass	25.5 short tons (23.1 t)
Length	25 ft 9 in (7.85 m)
Width	8 ft 8 in (2.64 m)
Height	8 ft (3.04 m)
Crew	4
Armor	1 in (25 mm) to 0.375 in (9.5 mm)
Main armament	57mm QF Hotchkiss
Secondary armament	two machine guns
Engine	Murray and Tregurtha, Marine, 6-cylinders forced water-colled Gasoline. 195 hp (145 kW) at 1,250 rpm
Power/weight	6.29 kW/t (8.44 hp/t)
Suspension	cable suspension
Operational range	160 mi (260 km)
Maximum speed	15.7 mph (25.3 km/h)

The Medium Tank M1922 was an inter-war period medium tank built in the United States.^[1] It was largely a variant of the Medium Tank M1921, with some changes to use the same track suspension system that had been developed for the Medium Mark D.^[2]

The M1922 was initially the second tank in an order for two M1921s placed in April 1920 but the order was changed to one M1921 to the original design and one using the cable track system ^[2]