|
M3 medium tank, Lee I |
Crew |
Commander, driver, loaders(2), gunners(2).
6, 7 |
Radio |
SCR-508 |
Radio - command tank |
SCR-506 |
Physical Characteristics |
|
Weight |
26.7 tons, 28 tons, 27.9 tons, 30 tons, 31.1 tons
59,928 lb, 60,000 lb, 62,280 lb
27,216 kg, 27,240 kg, 27,900 kg |
Length |
18.6', 18' 6"
5.6 m, 5.63 m, 5.639 m, 5.64 m, 5.9 m |
Height |
10' 3", 10.3'
3.02 m, 3.1 m, 3.12 m, 3.124 m |
Width |
8.9', 8' 11"
2.7 m, 2.718 m, 2.72 m, 2.75 m |
Ground clearance |
17 1/8"
0.43 m |
Ground contact length |
147" |
Ground pressure |
12.6 psi, 12.9 psi, 13.2 psi, 13.36 psi, 13.4 psi
0.9 (kg/sq cm), 1.2 (kg/sq cm) |
Turret ring diameter |
57", 60" |
Armament |
|
Main |
1: 75 mm M2, M1 mount, L/31
1: 75 mm L/31
1: 75 mm
1: 75 mm QF M2 L/31
1: 75 mm M2 |
OR |
1: 75 mm M3 |
Secondary |
1: 37 mm M5, M24 mount, L/56
1: 37 mm L/56
1: 37 mm
1: 37 mm QF M5, L/50
1: 37 mm M6, gyrostabilized |
OR |
1: 37 mm M6 |
MG |
4: 7.62 mm MG
1: MG
3: MG
3-4: .30 cal Browning MG
3 or 4: .30" MG |
MG - cupola |
1: .30 cal MG
1: .30 cal M1919A4
1: .30 cal Browning M1919A4 MG |
MG - coaxial |
1: .30 cal M1919A4
1: .30 cal Browning M1919A4 MG |
MG - hull |
1: .30 cal M1919A4
2: .30 cal M1919A4
1: .30 cal Browning M1919A4 MG
2: .30 cal Browning M1919A4 MG |
OR |
2: .30 cal Browning M1919A4 MG |
Side arms |
.45 cal submachine gun
Hand grenades |
Quantity |
|
Main |
41, 46, 50 |
Secondary |
178, 179, 182 |
MG |
3,100, 8,000, 9,200 |
Side arms |
.45: 1,200
Grenades: 12 |
Armor Thickness (mm) |
12 - 37, 12 - 38, 12, 37, 1.5" - 2"
Front: 2", 51
Side: 1.5", 38
Rear: 1.5, 38 |
Hull Front, Upper |
2", 2"@0°
38.1 - 50.8, 50, 38 - 51@0-45° |
Hull Front, Lower |
1.5"
38@53° & 51@30° |
Hull Sides, Upper |
1.5"@0°, 1.5"
38@0°, 38.1 |
Hull Sides, Lower |
1.5"
38@0° |
Hull Rear |
1.5"@0°, 1.5"
38@0°, 38.1 |
Hull Top |
0.5"
13@83-90°, 12.7 |
Hull Bottom |
0.5" - 1"
12.7-25.4, 13@90° rear, 25@90° front |
Turret Front |
2", 2.25"@0°, 2.25"
51@47°, mantlet 89@0°
50.8-76.2, 50, 50.8, 57, 76 |
Turret Sides |
2.25"@0°, 2.25"
50.8, 51@5° |
Turret Rear |
2.25"
50.8, 51@5° |
Turret Top |
7/8"
31.8, 22.2, 22@90° |
Engine (Make / Model) |
Continental R-975-EC2, Continental R-975-E1, Continental Wright, Continental R-975, Wright Continental (Whirlwind) R-975, Wright R-975-EC2, Continental R975-EC1, Guiberson T-1400 |
OR |
Continental R-975-EC1 |
Cooling |
Air |
Cylinders |
Radial, 9, R-9 |
Net HP |
340, 340@2,400rpm, 400@2,400 rpm
Continental: 340
Guiberson: 345 |
Transmission (Type) |
Synchromesh
5 forward, 1 reverse |
Steering |
Controlled differential |
Starter |
Electric or hand |
Electrical system |
24 volts |
Ignition |
Magneto |
Gear - 1st gear |
7.56:1 |
- 2nd speed |
3.11:1 |
- 3rd speed |
1.78:1 |
- 4th speed |
1.11:1 |
- 5th speed |
0.73:1 |
- Reverse |
5.65:1 |
Fuel (Type) |
Gasoline |
Octane |
80, 92 |
Capacity |
174 gallons, 175 gallons
662 liters, 796 liters |
Fuel consumption - Road |
0.837 mpg |
Fuel consumption - Cross country |
|
Power to Weight Ratio |
12.7 hp/ton |
Performance |
|
Traverse |
37 mm: 360°, 18°/sec, hydraulic and hand, power or manual
75 mm: 15° each way |
Speed - Road |
22 mph, 25 mph, 26 mph
42 kph, 40.2 kph |
Speed - Cross Country |
4-20 mph, 16 mph
25 kph, 26 kph |
Range - Road |
120 miles, 146 miles
177 km, 193 km |
Range - Cross Country |
120 miles |
Turning Radius |
37'
18.9 m, 19 m, 21 m |
Elevation Limits |
75 mm: -9° to +20°
37 mm: -7° to +60° |
Fording depth |
3' 4"
1 m, 1.02 m |
Trench crossing |
6.2', 6' 2", 6' 3", 6.3', 7.5'
1.9 m, 1.91 m, 2.3 m |
Vertical Obstacle |
2'
0.61 m |
Climbing ability |
30° slope, 31° (60%) slope, 60% |
Suspension (Type) |
Volute Spring
3: Vertical Volute bogies
Vertical volute spring, 3 bogies of 2 wheels each |
Wheels each side |
6 |
Wheel size |
20" x 9" |
Wheel size - idler |
22" x 9" |
Return rollers each side |
3 |
Tracks (Type) |
Dry pin, double pin per shoe, rubber cleat
Rubber block |
Length |
|
Width |
16.5", 16 9/16"
0.419 m, 0.42 m |
Number of Links |
79 |
Pitch |
6" |
Tire Tread |
Rubber |
Track centers/tread |
6' 9", 6' 11", 7'
2.108 m |