Vickers 6-ton

The Vickers 6-ton tank, also called the Vickers Mark E or the Six-tonner, was a British light tank designed in 1928 as a private venture at Vickers by a team that included the tank designers John Valentine Carden and Vivian Loyd. The British Army did not adopt it, but several other armed forces bought it, the Soviet Union built it under licence as the T-26, and it was the direct predecessor of the Polish 7TP. It came in two versions, the Type A with two machine-gun turrets and the Type B with a single two-man turret carrying a machine gun and a short 47 mm 3-pounder gun. An Armstrong Siddeley engine of 80 to 95 horsepower gave a road speed of 22 mph, and the suspension patented by Carden gave good cross-country performance for its time.