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United States' M3A1 medium tank14
M3A1 Medium Tank: Aberdeen Tank Museum |
M3A1 Medium Tank: U.S. Ordnance Dept. |
M3A1 Medium Tank: |
| Shell Type | Weight | Muzzle velocity | |
|---|---|---|---|
| 75 mm M211,12 | AP11,12 | 14.4 lb11,12 | 1,290'/sec12, 1,850'/sec11 |
| 37 mm M611,12 | AP11,12 | 1.9 lb11,12 | 2,600'/sec11, 2,900'/sec12 |
| .30 Cal MG | 2,800'/sec12 |
Produced by American Locomotive Company.1
Cast hull.8,12,14 Cast upper hull.1,14 Late models had escape hatch in hull floor instead of side doors.
Diesel version
Had Guiberson diesel engine.8
| M3A1 medium tank14, Lee II | |
|---|---|
| Crew | Commander, driver, loaders(2), gunners(2).4 64,5,10,12,14, 711 |
| Radio | SCR-50814 |
| Radio - command | SCR-50614 |
| Physical Characteristics | |
| Weight | 32 tons11 60,000 lb5,10,14, 63,880 lb12 27,900 kg |
| Length w/gun | 18' 6"4,5,10,11,12,14 5.64-6.12 m |
| Length w/o gun | |
| Height | 10' 3"4,5,10,12,14, 10.25'11 |
| Width | 8.95'11, 8' 11"4,5,10,12,14 |
| Ground clearance | 17 1/8"10,12,14, 17.1"11 |
| Ground contact length | 147"11,12,14 |
| Ground pressure | 12.9 psi, 13.25 psi12, 13.36 psi10,14, 13.5 psi11 |
| Turret ring diameter | 57"10,12 |
| Armament | |
| Main | 75 mm M24,14 75 mm5 75 mm M2, L/3111 75 mm M2, gyrostabilized12 |
| OR | 75 mm M34,14 |
| Secondary | 37 mm M54,14 37 mm5 37 mm M6, L/5311 37 mm M612 |
| OR | 37 mm M64,14 |
| MG | 3-4: .30 cal Browning MGs4 3: MG5 3: .30 cal M1919A4 and M1919A5, coaxial, hull, cupola11 |
| MG - cupola | 1: .30 cal M1919A4 MG12 1: .30 cal M1919A4 Browning MG14 |
| MG - coaxial | 1: .30 cal M1919A4 MG12 1: .30 cal M1919A4 Browning MG14 |
| MG - hull | 1: .30 cal M1919A4 Browning MG14 2: .30 cal M1919A4 MG12 |
| Side arms | Hand grenades12,14 .45 cal submachine gun14 |
| Quantity | |
| Main | 464,12,14, 5011 |
| Secondary | 1784,11,12,14 |
| MG | 9,2004,11,12,14 |
| Side arms | Grenades: 1212,14 .45: 1,90014 |
| Armor Thickness (mm) | 124, 374,
1.5" - 2"5 Front: 2"11 Side: 1.5"11 |
| Hull Front, Upper | 2"14, 2"@0°12 |
| Hull Front, Lower | 1.5"14 |
| Hull Sides, Upper | 1.5"14, 1.5"@0°12 |
| Hull Sides, Lower | 1.5"14 |
| Hull Rear | 1.5"14, 1.5"@0°12 |
| Hull Top | 0.5"14 |
| Hull Bottom | 0.5" - 1"14 |
| Turret Front | 2"11, 2.25"14, 2.25"@0°12 |
| Turret Sides | 2"11, 2.25"14, 2.25"@0°12 |
| Turret Rear | 2.25"14 |
| Turret Top | 7/8"14 |
| Engine (Make / Model) | Continental R-975-EC210,15, Continental R-975-C110, Continental R-9755, Guiberson Diesel11, Wright Whirlwind (gasoline)11, Continental R975-EC112, Guiberson T-140012 |
| OR | Continental R-975-EC114 |
| Cooling | Air10,11,12,14 |
| Cylinders | 95,10,11, R-912,14 Wright: R-911 |
| Net HP | 3405,
340@2,400 rpm10,14 Diesel: 34512, 350@2,400 rpm11 Gasoline: 34012 Wright: 420@2,000 rpm11 |
| Transmission (Type) | Synchromesh12,14 5 forward, 1 reverse12,14 |
| Steering | Controlled differential12 |
| Starter | Electric11 |
| Electrical system | 24-volts11,14 |
| Ignition | Diesel: Injection11 Gasoline: Magneto11 |
| Gear ratio - 1st gear | 7.56:114 |
| - 2nd gear | 3.11:114 |
| - 3rd gear | 1.78:114 |
| - 4th gear | 1.11:114 |
| - 5th gear | 0.73:114 |
| - Reverse gear | 5.65:114 |
| Fuel (Type) | Gasoline10,11,12 Diesel11,12 |
| Octane | 8010,14 |
| OR | 9210,14 |
| Capacity | 175 gallons10,12,14 796 liters Gasoline: 185 gallons11 Diesel: 175 gallons11 |
| Fuel consumption - Road | Gasoline: 0.6 mpg11 Diesel: 0.8 mpg11 |
| Fuel consumption - Cross country | |
| Power to Weight Ratio | |
| Performance | |
| Traverse | 37 mm: 360°4,12,14, power or manual12 75 mm: 15° left, 15° right4,12,14 Hydraulic or hand11 |
| Max Speed | 25 mph11,12, 26 mph4,5,10,14 34 kph |
| Cross Country speed | 4-20 mph11, 16 mph4 |
| Road radius | 120 miles4,10,14 193 km Gasoline: 120 miles11,12 Diesel: 140 miles11,12 |
| Cross country radius | |
| Turning Radius | 37'10,14 18.9 m |
| Elevation Limits | 75 mm: -9° to +20°4,12,14 37 mm: -7° to +60°4,12,14 |
| Fording depth | 3' 4"4,10,12,14, 42"11 |
| Trench crossing | 6.2'14, 6' 2"10,12, 6' 3"4, 7.6'11 |
| Vertical Obstacle | 2'4,10,11,12,14 |
| Climbing ability | 30° slope12, 31° (60%) slope11, 60%14 |
| Suspension (Type) | 3: Vertical Volute bogies8,11 Vertical volute springing12,14 |
| Wheels each side | 3x211, 3 two wheeled bogies12 |
| Wheel size | 20" x 9"14 |
| Wheel size - idler | 22" x 9"14 |
| Return rollers each side | 311,12 |
| Tracks (Type) | Rubber block or rubber bushed, double pin shoe11,14 Steel blocks with rubber pads, rubber bushed track pins12 |
| Length | |
| Width | 16"11,12, 16.5"4, 16 9/16"14 |
| Number of Links | 7911,12,14 |
| Pitch | 6"11,12,14 |
| Tire Tread | Rubber12 |
| Track centers/tread | 81"12, 6' 11"4,10,14, 6.9'11 |
Sources:
- The Encyclopedia of Tanks and Armored Fighting Vehicles - The Comprehensive Guide to Over 900 Armored Fighting Vehicles From 1915 to the Present Day, General Editor: Christopher F. Foss, 2002
- Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1933-1942, Thomas L. Jentz, 1996
- Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1943-1945, Thomas L. Jentz, 1996
- British and American Tanks of World War Two, The Complete Illustrated History of British, American, and Commonwealth Tanks 1933-1945, Peter Chamberlain and Chris Ellis, 1969
- Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
- The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
- -
- Tanks of World War II, Duncan Crow, 1979
- Battle Winning Tanks, Aircraft & Warships of World War II, David Miller, 2000
- AFV 11: M3 Medium (Lee/Grant), Peter Chamberlain and Chris Ellis
- Tank Data, Aberdeen Proving Grounds Series, 1968?
- Tank Data 2, Aberdeen Proving Grounds Series, E. J. Hoffschmidt and W. H. Tantum IV, 1969
- Airfix Magazine Guide #26 American Tanks of World War 2, Terry Gander and Peter Chamberlain, 1977
- The American Arsenal, 1996
