Steam Wheel Tank

Steam Wheel Tank
The Steam Wheel Tank
Place of origin	United States
Specifications
Mass	17 tons
Length	22 ft 3 in (6.78 m)
Width	10 ft 1 in (3.07 m)
Height	9 ft 10 in (3.00 m)
Crew	6
Armor	0.23–0.63 in (5.8–16.0 mm)
Main armament	2× 6-pounder (57 mm) cannons
Secondary armament	2× machine guns
Engine	2steam

TheSteam Wheel Tankwas a U.S.-produced, prototypearmoured fighting vehiclebuilt by theHolt Manufacturing Company(nowCaterpillar Inc.). Developed sometime between late 1916 and early 1917, it was the third tank to be designed in the U.S. The prototype was completed in February 1918 and was evaluated between March and May 1918 atAberdeen Proving Ground.It performed poorly and was not developed further.

Design

Although it is often assumed that the vehicle was atadpole configuration(with two driving wheels at the front), a senior Holt executive and the Aberdeen Proving Ground's report state that it was adelta configuration(with the large wheels at the rear), and that the vehicle drove like a conventional agricultural tractor.

The two driving wheels were 8 feet (2.4 m) in diameter with 3-foot-wide (0.91 m) treads, and a 4 feet (1.2 m) diameter roller, used for steering, was sited at the front. The rear wheels were made from pressed-steel sheet, the same as those used on Holt agricultural machinery of the period. A small plate was attached to the roller to assist in crossing trenches. Each rear wheel was driven by aDobletwo-cylinder 75hp(56 kilowatts) steam engine and a Doble kerosene-fired boiler.

The vehicle's armament comprised 2 6-pounder (57 mm) cannons, mounted insponsons,and two machine guns. Its riveted armour plating was between six and fifteen millimetres thick.

See also

• Steam powered tracked tank

References

• Rigsby, Tim."Steam Wheel Tank".landships.info.RetrievedJuly 7,2016.
• Crismon, F.W. (1992) U.S. Military Tracked Vehicles. Motorbooks International
• Automotive Historical Records: Volume III, Tanks and Combat Cars, (Automotive Division, Aberdeen Proving Ground, Maryland 1945)

External links

• United States Heavy Tanks