T1 Medium Tank
Aberdeen Tank Museum
Design began in 1924 and production in 1925 at Rock Island.1 It wasn't ready for testing until May 1927.1 Testing was completed in April 1932.1 In 1928 it was recommended to standardize it as the Medium Tank M1, but the War Department changed its mind and it became just a test vehicle.1
Had the Packard engine.1
Used only for testing.
T1E1 Medium Tank
Had the Liberty engine installed and tested ventilation methods.1,3 It was rather long with a low profile hull. Its turret was mounted forward with a commanders cupola on top.1 It had armor protecting most of the running gear.1
| T1 Medium Tank | |
|---|---|
| Crew | 41,2,4 |
| Physical Characteristics | |
| Weight | 19,912 kg1 19.6 tons1, 22 tons2,3,4 |
| Length w/gun | 21' 6"1,2,4 6.55 m1 |
| Length w/o gun | |
| Height | 9' 4.5"2, 9' 5"1, 9' 7.5"4 2.88 m1 |
| Width | 8'1,2,4 2.44 m1 |
| Width over tracks | |
| Ground clearance | 22"4 |
| Ground contact length | |
| Ground pressure | |
| Turret ring diameter | |
| Armament | 57 mm1,2 or 75 mm1 57 mm (6 pounder)4 |
| Main | |
| Secondary | 2: 7.62 mm MG1 2: MG2 2: .30 cal M1919A2 MG, cupola, coaxial4 |
| MG | |
| Side arms | |
| Quantity | |
| Main | 1314 |
| Secondary | |
| MG | 4,2004 |
| Side arms | |
| Armor Thickness (mm) | 251 3/8" - 1"2 |
| Hull Front, Upper | 1"@0°4 |
| Hull Front, Lower | |
| Hull Sides, Upper | 0.375"@0°4 |
| Hull Sides, Lower | |
| Hull Rear | 0.375"@0°4 |
| Hull Top | |
| Hull Bottom | |
| Turret Front | 1"@0°4 |
| Turret Sides | 1"@0°4 |
| Turret Rear | |
| Turret Top | |
| Engine (Make / Model) | Liberty1 Packard1,2,4 |
| Bore / stroke | |
| Cooling | Water4 |
| Cylinders | 84 |
| Capacity | |
| Net HP | 2004 |
| Power to weight ratio | |
| Compression ratio | |
| Transmission (Type) | Planetary4 4 forward, 1 reverse4 |
| Steering | Controlled differential4 |
| Steering ratio | |
| Starter | |
| Electrical system | |
| Ignition | |
| Fuel (Type) | Gasoline4 |
| Octane | |
| Quantity | 95 gallons4 |
| Road consumption | |
| Cross country consumption | |
| Performance | |
| Traverse | 360°, hand4 |
| Max speed | 11.3 mph4 Liberty: 25 mph1, 40 kph1 Packard: 14 mph1,2, 22.5 kph1 |
| Cross country speed | |
| Road radius | 50 miles4 |
| Cross country radius | |
| Turning radius | |
| Elevation limits | |
| Fording depth | 2'4 |
| Trench crossing | 8'4 |
| Vertical obstacle | 2' 7"4 |
| Climbing ability | 35° slope4 |
| Suspension (Type) | Vertical coil springs4 |
| Wheels each side | 2 articulated bogies of 4 wheels each4 |
| Return rollers each side | |
| Tracks (Type) | Steel4 |
| Length | |
| Width | 18"4 |
| Diameter | |
| Number of links | |
| Pitch | 8 1/8"4 |
| Tire tread | |
| Track centers/tread | |
| Production | 1925: Rock Island Arsenal4 |
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
- Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
- Tanks of World War II, Duncan Crow, 1979
- Tank Data 2, Aberdeen Proving Grounds Series, E. J. Hoffschmidt and W. H. Tantum IV, 1969
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