BT-7 tank

Kharkiv Factory No. 183 received its first assignment to develop a new fast tank in January 1933. The first BT-7 rolled off the production line in May 1934. The vehicle cost the state 98,000 roubles.

The BT-7 used a twelve-cylinder carburetted M-17T engine. This liquid-cooled V-type engine displaced 46,920 cc and produced 400 hp at 1,650 rpm.

BT-7 armour thickness: front 20 mm, sides and rear 13 mm, roof 10 mm, floor 6 mm and turret 15 mm.

Crew: 3; combat weight: 13 tonnes. Maximum speed: 53 km/h on tracks and 73 km/h on wheels. Range: 375 km on tracks and 500 km on wheels.

Main armament: a 45 mm 20K gun of the 1934 model and a 7.62 mm DT machine gun of the 1929 model. Ammunition: 172 rounds of 45 mm and 2,394 rounds of 7.62 mm ammunition.