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United States T1 combat car:

Photos

T5 Combat Car:
United States' T5 Combat Car
Aberdeen Tank Museum
T5E1 Combat Car:
United States' T5E1 Combat Car
Aberdeen Tank Museum

Design

J. Cunningham Sons & Co built it based on a design form the Ordnance Department.1 Almost entered service but the M2 was produced.1

It had 4 2-wheel bogies on each side.1

Production

  • T5: 171
    • Production: 19343
    • Manufacturer: Rock Island Arsenal3
  • T5E1:
    • Production: 19353
    • Manufacturer: Rock Island Arsenal3

Variants

  • T1E6: Thicker armor and a La France 240 hp engine.1
  • T5: The Rock Island Arsenal built a prototype in 1934. The .50 cal MG had a muzzle velocity of 2,900'/sec. and the .30 cal 2,800'/sec.3
  • T5E1: The concept of the vehicle was to be able to shoot down all 4 directions at a crossroad.3 The muzzle velocity of the MGs are 2,900'/sec.3
  • T5E2: Had a 75 mm howitzer and 6 MGs installed.1

Specifications

  T1
Crew 21, 32
Physical Characteristics  
Weight 6,804 kg1
6.7 tons1, 10.5 tons2
Length 12' 8"1, 18'2
3.87 m1
Height 7' 2"1, 7' 6"2
2.17 m1
Width 5' 11"1, 17' 4"2
1.79 m1
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 37 mm1
2: MG2
Secondary  
MG 7.62 mm MG1
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 9.51
0.5" - 5/8"2
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Cunningham1
Liberty2, water cooled2
Bore / stroke  
Cooling  
Cylinders V-122
Capacity  
Net HP 3382
Power to weight ratio  
Compression ratio  
Transmission (Type) 3 forward, 1 reverse
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road 20 mph1
Wheels: 46 mph2
Tracks: 27 mph2
32 kph1
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  T2E1
Crew 32
Physical Characteristics  
Weight  
Length 12' 3"2
Height 6' 10"2
Width 6' 6"2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 3: MG2
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm)  
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2, air cooled2
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP 2002
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road Wheels: 41 mph2
Tracks: 27 mph2
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  T4
Crew 42
Physical Characteristics  
Weight 9.6 tons2
Length 16' 1"2
Height 6' 7"2
Width 7' 7"2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 3: MG2
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm)  
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2, air cooled2
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP 2502
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road Wheels: 52 mph2
Tracks: 26 mph2
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  T4E1
Crew 32
Physical Characteristics  
Weight 20,000 lb2
Length 16' 1"2
Height  
Width 7' 7"2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 6: MG2
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 0.5"2
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2, air cooled2
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP 2642
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road Wheels: 44 mph2
Tracks: 29 mph2
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  T5
Crew 41,2,4
Physical Characteristics  
Weight 8.48 tons1, 9.7 tons2,4
8,600 kg1
Length 13' 4"2, 14' 4"3, 14' 6"1
4.43 m1
Height 6' 6"3, 7' 5"1, 7' 6"2
2.26 m1
Width 6' 8"2, 7' 2"3, 7' 7"1
2.4 m1
Width over tracks  
Ground clearance 14.5"3
Ground contact length 97"3
Ground pressure  
Turret ring diameter  
Armament  
Main 4: 7.62 mm MG1
3: MG2
Left turret: .50 cal M2 MG3
Right turret: .30 cal M2 MG3
Secondary  
MG .30 cal M2 MG, bow3
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 161
Hull Front, Upper 0.625"@0°3
Hull Front, Lower  
Hull Sides, Upper 0.375"@0°3
Hull Sides, Lower  
Hull Rear 0.375"@0°3
Hull Top  
Hull Bottom  
Turret Front 0.625"@0°3
Turret Sides 0.625"@0°3
Turret Rear  
Turret Top  
Engine (Make / Model) Continental W670-71
Continental Radial2
Continental Radial Aircraft3
Bore / stroke  
Cooling Air2,4
Cylinders R-73
Capacity  
Net HP 2503, 2642
Power to weight ratio  
Compression ratio  
Transmission (Type) 5 forward, 1 reverse3
Steering Controlled differential3
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Gasoline3
Octane  
Quantity 54 gallons3
Road consumption 2.4 mpg3
Cross country consumption  
Performance  
Traverse 2: 270° each3
Speed - Road 30 mph3, 36 mph1,2
58 kph1
Speed - Cross Country  
Range - Road 110 miles1, 130 miles3
180 km1
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability 25° slope3
Suspension (Type) Vertical-volute1,4
Wheels each side 2 double wheeled bogies3
Return rollers each side 23
Tracks (Type) Steel with rubber bushed track pins3
Length  
Width 11.6"3
Diameter  
Number of links 663
Pitch 5.5"3
Tire tread Rubber3
Track centers/tread 73"3
  T5E1
Crew 42,4
Physical Characteristics  
Weight 13,850 lb2
9.5 tons3
Length 13' 4"2, 14' 4"3
Height 6' 10"3, 7' 6"2
Width 7' 2"3, 8' 1"2
Width over tracks  
Ground clearance 14.5"3
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 6: MG2
1: .50 cal HBM2 MG3
4: .30 cal M1919 MG3
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 3/8" - 0.5"2
Hull Front, Upper 0.625"@0°3
Hull Front, Lower  
Hull Sides, Upper 0.375"@0°3
Hull Sides, Lower  
Hull Rear 0.375"@0°3
Hull Top  
Hull Bottom  
Turret Front 0.625"@0°3
Turret Sides 0.625"@0°3
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2,4
Bore / stroke  
Cooling Air2,4
Cylinders R-73
Capacity  
Net HP 2503, 2572
Power to weight ratio  
Compression ratio  
Transmission (Type) Synchromesh3
5 forward, 1 reverse3
Steering Controlled differential3
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Gasoline3
Octane  
Quantity 54 gallons3
Road consumption 2.4 mpg3
Cross country consumption  
Performance  
Traverse  
Speed - Road 30 mph3, 45 mph2
Speed - Cross Country  
Range - Road 130 miles3
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability 25° slope3
Suspension (Type) Vertical volute springing3
Wheels each side 2 double wheeled bogies3
Return rollers each side 23
Tracks (Type)  
Length  
Width 11.6"3
Diameter  
Number of links 663
Pitch 5.5"3
Tire tread  
Track centers/tread 73"3
  T5E2
Crew 42
Physical Characteristics  
Weight 9.7 ton2
Length 13' 7"2
Height 7' 5"2
Width 7' 10"2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 3: MG2
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 0.5" - 5/8"2
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2
Bore / stroke  
Cooling Air2
Cylinders  
Capacity  
Net HP 2502
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road 45 mph2
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  T7
Crew 42
Physical Characteristics  
Weight 11 tons2
Length 16' 8"2
Height 8' 1"2
Width 8' 7.5"2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 3: MG2
Secondary  
MG  
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 5/8" - 0.5"2
Hull Front, Upper  
Hull Front, Lower  
Hull Sides, Upper  
Hull Sides, Lower  
Hull Rear  
Hull Top  
Hull Bottom  
Turret Front  
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) Continental radial2
Bore / stroke  
Cooling Air2
Cylinders  
Capacity  
Net HP 2502
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse  
Speed - Road Wheels: 53 mph2
Tracks: 24 mph2
Speed - Cross Country  
Range - Road  
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth  
Trench crossing  
Vertical obstacle  
Climbing ability  
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  

Sources:

  1. 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
  2. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
  3. Tank Data 2, Aberdeen Proving Grounds Series, E. J. Hoffschmidt and W. H. Tantum IV, 1969
20th Century American Military History Crucial Site

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