USSR BT-1 early

Tweet The BT-1 early based on the existing BT and was in use from 1931. General Details Specifications Operational Date(s) 1931 Ordnance classification Quantity Produced 0 Weight unknown Crew 3 M.G's small 2 M.G's large(>10mm) n/a Length 5.54 mtr Width 2.26 mtr Height 1.95 mtr Engine Details/Performance Max Road Speed 69 mph Max Cross Country Speed 39 mph Range Road 187 miles Range Cross Country 125 miles Fuel Type Unknown Fuel Capacity 88 gal Horse Power 343 hp Power/Weight unknown 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 Front 13mm @ 10° (13mm) Side 13mm @ 10° (13mm) Rear 13mm @ 10° (13mm) Top 10mm @ 90° (10mm) Superstructure Front 13mm @ 30° (15mm) Side 13mm @ 0° (13mm) Rear 10mm @ 0° (10mm) Top 6mm @ 90° (6mm) Hull Front 13mm @ 30° (15mm) Side 13mm @ 0° (13mm) Rear 13mm @ 0° (13mm) Top 6mm @ 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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