Soviet Tank BT 7 ( Red Army)

BT7(БТ7) were lightly armoured, but reasonably wellarmed for their time, and had the best mobility of all contemporary tanks of the world. In about thirty minutes the crew could remove the tracks and engage a chain drive to the rearmost road wheel on each side, allowing the tank to travel at very high speeds on roads. In wheeled mode the tank was steered by pivoting the front road