BT-1 Bystrochodnij Tankov (Fast Tank)


The building of the prototype began in May 1931.2 Only one was produced.2
When on wheels, the steering wheel controlled the front pair of wheels.3 When on tracks, the steering was done by clutch and brake.3
The construction was all riveted.4
| BT-1 | |
|---|---|
| Crew | 31,2,3,4 |
| Physical Characteristics | |
| Weight | 10 tons4, 10.2 tons1,3, 11 tons2 10,200 kg4 |
| Length w/gun | 18'1,3,4 5.49 m4 |
| Length w/o gun | 18'3 |
| Height | 6.33'1, 6' 4"4, 7.25'3 1.93 m4 |
| Width | 7.33'1,3, 7' 4"4 2.24 m4 |
| Width over tracks | |
| Ground clearance | Wheels: 9"3 Tracks: 10.5"3 |
| Ground contact length | 10.663 |
| Ground pressure | 8.96 psi3 |
| Turret ring diameter | |
| Armament | |
| Main | 7.62 mm MG1 2: MG2,4 2: 7.62 mm MG, air cooled3 |
| Secondary | 7.62 mm DT MG4 |
| MG | |
| Side arms | |
| Quantity | |
| Main | 4,0003 |
| Secondary | |
| MG | |
| Side arms | |
| Armor Thickness (mm) | 6 - 131, 134 |
| Hull Front, Upper | 133 |
| Hull Front, Lower | |
| Hull Sides, Upper | 10 - 133 |
| Hull Sides, Lower | |
| Hull Rear | 103 |
| Hull Top | 6 - 103 |
| Hull Bottom | 6 - 103 |
| Turret Front | 133 |
| Turret Sides | 133 |
| Turret Rear | 133 |
| Turret Top | 103 |
| Engine (Make / Model) | Liberty2 Liberty Aero3,4 |
| Bore / stroke | |
| Cooling | Water3 |
| Cylinders | V-123,4 |
| Capacity | |
| Net HP | 343 - 4001 4002,4 343 - 400@2,000 rpm3 |
| Power to weight ratio | 36.4 hp / ton2, 34.3 hp/ton3 |
| Compression ratio | |
| Transmission (Type) | Wheels: Chain drive3 Tracks: Sliding gear3 |
| Steering | |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | Gasoline1,3,4 |
| Octane | |
| Quantity | 88 gallons3 |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°3 |
| Max speed | 39 mph2, 40 - 69 mph1 Track: 40 mph4, 65 kph4 Wheels: 65 mph4, 69 mph3, 105 kph4 |
| Cross country speed | Track: 39 mph3 |
| Road radius | Track: 124 miles4, 200 km4 Wheels: 186 miles4, 187 miles3, 300 km4 |
| Cross country radius | Tracks: 125 miles3 |
| Turning radius | 40'3 |
| Elevation limits | -10° to +10°3 |
| Fording depth | 3.95'3 |
| Trench crossing | 6.85'3 |
| Vertical obstacle | Wheels: 8"3 Tracks: 29.4"3 |
| Climbing ability | |
| Suspension (Type) | Christie2 Christie independent type3 |
| Wheels each side | 42,3 |
| Return rollers each side | |
| Tracks (Type) | |
| Length | |
| Width | 2 x 3.95"3, 10.25"3 |
| Diameter | 32.5"3 |
| Number of links | |
| Pitch | |
| Tire tread | |
| Track centers/tread | 6.33'3 |
| Production | 12 |
Sources:
- Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
- Tanks of World War II, Duncan Crow, 1979
- Profile AFV Weapons 37 Russian BT Series, John F. Milsom, 1971
- The Illustrated Guide to Tanks of the World, George Forty, 2006
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