BT-3 Bystrochodnij Tankov (Fast Tank)
Had solid disc wheels with a 45 mm gun1.3 Few produced. In 1937 a bridgelaying version was built.
Steering on wheels was by a wheel that controlled the front wheels.2 On tracks, it was steered by the clutch and brake.2
BT-3 Bridge Laying:
| BT-3 | |
|---|---|
| Crew | 32 |
| Physical Characteristics | |
| Weight | 10.2 tons2 |
| Length w/gun | 18'2 |
| Length w/o gun | |
| Height | 7.25'2 |
| Width | 7.33'2 |
| Width over tracks | |
| Ground clearance | Wheels: 9"2 Tracks: 10.5"2 |
| Ground contact length | 12'2 |
| Ground pressure | 8.96 psi2 |
| Turret ring diameter | |
| Armament | |
| Main | 45 mm L/462 45 mm3 |
| Secondary | |
| MG | 7.62 mm DTMG2 |
| Side arms | |
| Quantity | |
| Main | 962 |
| Secondary | |
| MG | 2,7092 |
| Side arms | |
| Armor Thickness (mm) | |
| Hull Front, Upper | 132 |
| Hull Front, Lower | |
| Hull Sides, Upper | 10 - 132 |
| Hull Sides, Lower | |
| Hull Rear | 102 |
| Hull Top | 6 - 102 |
| Hull Bottom | 6 - 102 |
| Turret Front | 132 |
| Turret Sides | 132 |
| Turret Rear | 132 |
| Turret Top | 102 |
| Engine (Make / Model) | Liberty Aero2 |
| Bore / stroke | |
| Cooling | Water2 |
| Cylinders | V-122 |
| Net HP | 343 - 400@2,000 rpm2 |
| Power to weight ratio | 34.3 hp/ton2 |
| Compress ratio | |
| Transmission (Type) | Wheels: Chain drive2 Tracks: Sliding Gear2 |
| Steering | |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | Gasoline2 |
| Octane | |
| Quantity | 88 gallons2 |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°2 |
| Max speed | Wheels: 69 mph2 |
| Cross country speed | Tracks: 39 mph2 |
| Road radius | Wheels: 187 miles2 |
| Cross country radius | Tracks: 125 miles2 |
| Turning radius | 40'2 |
| Elevation limits | -4° to +40°2 |
| Fording depth | 3.98'2 |
| Trench crossing | 6.85'2 |
| Vertical obstacle | Wheels: 8"2 Tracks: 29.8"2 |
| Climbing ability | |
| Suspension (Type) | Christie independent type2 |
| Wheels each side | 42 |
| Return rollers each side | |
| Tires (Type) | |
| Length | |
| Width | Tire: 2 x 3.95"2 Track: 10.25"2 |
| Diameter | 32.5"2 |
| Number of links | |
| Pitch | |
| Tire tread | |
| Track centers/tread | 6.33'2 |
| Production |
Sources:
- 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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