The BT-5 - the fast tank that served in the Spanish Civil War

Developed from John Walter Christie’s designs, the BT series of tanks were the fastest tanks in the Soviet garage.

The BT-1 was Christie’s M1931. The first Soviet design, the BT-2, had paper-thin armor but a 37mm gun and a copy of the American Liberty engine providing high speeds. The BT-3 was the BT-2 with Imperial measurements converted to metric, and the BT-4 only existed in prototype form. The next major BT was the BT-5, which upgraded the cannon from 37mm to the same 45mm as the T-26.

50 of the BT-5 would see service with the Communist-supported Republicans in the Spanish Civil War. At least half of them were lost, some being repair and put into service by the Nationalists. After the war, the series would continue development into the BT-7 and eventually the T-34.

While this vehicle could have its treads removed to allow faster road driving, I haven't modeled that since it was found to be useless in service because of the time needed to change modes.

BT-5
Fire Control: 0
Armament: 45mm L/46 Tank Gun Model 1932, DT Machine Gun (coaxial)

Ammo: 115x45mm and 2709x7.62mm (tanks with radios have only 75x45mm)
Fuel Type: G, A
Veh Wt: 11.5 tonnes
Crew: 3 (commander, gunner, driver)
Mnt: 6
Night Vision: None
Tr Mov:86/69
Com Mov: 33/27
Fuel Cap: 360
Fuel Cons: 90
Config: Veh
Susp: T:2
HF: 5
HS: 2
HR: 1
TF: 3
TS: 3

TR: 3