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USSR
BT-1 early

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The BT-1 early based on the existing BT and was in use from 1931.

Flag of World War 2 Union Soviet Socialist Republics

General Details
Specifications
Operational Date(s)1931
Ordnance classification
Quantity Produced0
Weightunknown
Crew3
M.G's small2
M.G's large(>10mm)n/a
Length5.54 mtr
Width2.26 mtr
Height1.95 mtr
Engine Details/Performance
Max Road Speed69 mph
Max Cross Country Speed39 mph
Range Road187 miles
Range Cross Country125 miles
Fuel TypeUnknown
Fuel Capacity88 gal
Horse Power343 hp
Power/Weightunknown
General Information
The BT-1 early based on the existing BT and was in use from 1931.

It was armed with 2 light machine guns.

Armour Details
Turret
Front13mm@10°(13mm)
Side13mm@10°(13mm)
Rear13mm@10°(13mm)
Top10mm@90°(10mm)
Superstructure
Front13mm@30°(15mm)
Side13mm@(13mm)
Rear10mm@(10mm)
Top6mm@90°(6mm)
Hull
Front13mm@30°(15mm)
Side13mm@(13mm)
Rear13mm@(13mm)
Top6mm@90°(6mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 15 mm - Minimum 6 mm

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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