M6 Tractor
The M6 High-Speed Tractor was an artillery tractor manufactured by Allis-Chalmers and used by the US Army during World War II to tow heavy artillery pieces, such as the 8-inch Gun M1 and 240 mm howitzer M1. Its G-number was (G-184).
History
Background
Although in the late 1930s the US Army lacked a clear mechanization policy, the success of the Blitzkrieg in 1939-40 highlighted the need of motorized vehicles for both tactical and strategic maneuver, which meant that towed artillery would need to move at a speed comparable to that of the armored fighting vehicles.
To achieve this, a series of “high speed tractors” was planned, which would tow the different artillery pieces existing (or planned) in the US Army inventory. The “high” speed was considered in comparison with horse-drawn artillery rather than that obtainable with wheeled prime movers or ballast tractors. The models considered in the series included: 7 ton, 18 ton, 13 ton, and 38 ton.
Description
Intended to tow heavy artillery pieces as the 240 mm howitzer M1 and the 8-inch Gun M1, the M6 artillery tractor was larger and heavier than the M4 Artillery Tractor, although they had a similar layout. The main differences between both were in the following areas:
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