BT-5
Soviet Union (1933)
Fast tank – 1,884 builtPrevious modelsThe BT-5 (Bystrochodnij Tankov or “Fast Tank” type 5) was an improvement onprevious models. These were themselves close-copies, with specific modifications, of the US Christie M1931 “race tank”. The BT-5 shared with its predecessors the suspension, the hull (though slightly reinforced) and equipment. The turret was new, roomier and fitted for the first time with the standard 45 mm (1.77 in) gun, also used on theT-26. But this transition was not clear-cut. The BT-5 was preceded by the BT-4. Three prototypes of the latter were built in 1932 with a partially riveted, partially welded hull and modified suspension.
Profile of a BT-5, late type.
BT-5 model 1933Aside from the turret, the BT-5 could hardly be distinguished from its predecessor. The hulls were identical, with the same internal arrangement and the same Mikulin M5 engine, supplying 400 hp (298.4 kW). The armor was unchanged, ranging from 6 to 13 mm (0.24-0.51 in), in no way capable of withstanding even antitank rifle fire. Speed was seen as active protection. The big difference was the turret, similar to the model 1933 T-26 two-men turret with a 45 mm (1.77 in) model 32 gun, the new standard Soviet AT gun. 115 rounds were carried.
Fast tank – 1,884 builtPrevious modelsThe BT-5 (Bystrochodnij Tankov or “Fast Tank” type 5) was an improvement onprevious models. These were themselves close-copies, with specific modifications, of the US Christie M1931 “race tank”. The BT-5 shared with its predecessors the suspension, the hull (though slightly reinforced) and equipment. The turret was new, roomier and fitted for the first time with the standard 45 mm (1.77 in) gun, also used on theT-26. But this transition was not clear-cut. The BT-5 was preceded by the BT-4. Three prototypes of the latter were built in 1932 with a partially riveted, partially welded hull and modified suspension.
Profile of a BT-5, late type.
BT-5 model 1933Aside from the turret, the BT-5 could hardly be distinguished from its predecessor. The hulls were identical, with the same internal arrangement and the same Mikulin M5 engine, supplying 400 hp (298.4 kW). The armor was unchanged, ranging from 6 to 13 mm (0.24-0.51 in), in no way capable of withstanding even antitank rifle fire. Speed was seen as active protection. The big difference was the turret, similar to the model 1933 T-26 two-men turret with a 45 mm (1.77 in) model 32 gun, the new standard Soviet AT gun. 115 rounds were carried.
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