Ford-Produced and -Powered Sherman M4A3 Medium Tank
The transmission is at the front of the rear-engine tank, and these front cogs drive the treads along the road wheels and rear idlers. The huge gearbox lives between the driver and machine gunner and is a cross-drive unit with five forward speeds plus Reverse. To steer the tank, one tread is stopped, and the tank turns in the direction of the stopped tread.
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