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United States' T3 medium tank

Photos

T3 medium tank:
United States' T3 medium tank
Aberdeen Tank Museum

Design

It was the first Christie tank with the new Christie suspension system.1 The Army offered to buy it from Christie, but he wasn't satisfied it was finished.1 Three were sent to the infantry and four to the calvary.3

The Christie suspension system was installed which had individually suspended bogie wheels on coil sprung bell cranks.1 It could be converted to wheel travel by removing the tracks in the field.1 No turret in the test vehicle.1

The wheels were mounted on coil springs which allowed for a vertical movement of 14".4 The tracks could be removed and carried on shelves along the side of the vehicle.4 When on wheels the drive went to the rear wheels through a chain drive.4

When the main gun was replaced with a .50 cal machine gun, it was called the T1 Combat Car.4

Production

  • T3: 74
    • Manufacturer: US Wheel Track Layer Corp.4

Usage

Used only for testing.

Two were sold to Russia.4

Specifications

  T3
Crew 32,4
Physical Characteristics  
Weight 8,738 kg 1
8.6 tons1, 11 tons2, 11.1 tons4
Length 17'1, 18'2,4
5.18 m1
Height 6'1, 7' 6"2,4
1.83 m1
Width 7'1, 7.34, 7' 4"2
2.13 m1
Width over tracks  
Ground clearance 13.5"4
Ground contact length 128"4
Ground pressure 8.6 psi4
Turret ring diameter  
Armament  
Main 37 mm1,2,4
Secondary  
MG 7.62 mm MG1
MG2
.30 cal MG4
Side arms  
Quantity  
Main 1264
Secondary  
MG 3,0004
Side arms  
Armor Thickness (mm) 131
5/8" - 0.5"2
Front: 0.5"4
Side: 0.6"4
Turret: 0.6"4
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) Liberty1,2,4
Bore / stroke  
Cooling Forced water4
Cylinders V-124
Capacity  
Net HP 3384
Power to weight ratio  
Compression ratio  
Transmission (Type) Sliding gear4
4 forward, 1 reverse4
Steering Clutch brake4
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type)  
Octane  
Quantity 89 gallons4
Road consumption Tracks: 1.2 mpg4
Wheels: 2.8 mpg4
Cross country consumption  
Performance  
Traverse Hand4
Speed - Road Wheels: 46 mph2, 47 mph4, 70 mph1, 113 kph1
Tracks: 27 mph2,4, 42.5 mph1, 68 kph1
Speed - Cross Country  
Range - Road Wheels: 115 miles1, 250 miles4, 185 km1
Tracks: 75 miles1, 150 miles4, 120 km1
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth 36"4
Trench crossing 7'4
Vertical obstacle  
Climbing ability 35° (70%) slope4
Suspension (Type) Christie
Wheels each side  
Return rollers each side  
Tracks (Type) Dry pin4
Length  
Width 10.1"4
Diameter  
Number of links 464
Pitch 10"4
Tire tread Rubber4
Track centers/tread 6.4'4
  T3E2
Crew 42
Physical Characteristics  
Weight 11.5 tons2
Length 18' 9"2
Height 7' 8"2
Width 8'2
Width over tracks  
Ground clearance  
Ground contact length  
Ground pressure  
Turret ring diameter  
Armament  
Main 37 mm2
Secondary  
MG 5: MG2
Side arms  
Quantity  
Main  
Secondary  
MG  
Side arms  
Armor Thickness (mm) 3/8" - 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) Curtis2
Bore / stroke  
Cooling  
Cylinders  
Capacity  
Net HP  
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: 15.26 mph2
Tracks: 25 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. Tanks of World War II, Duncan Crow, 1979
  4. Tank Data, Aberdeen Proving Grounds Series, 1968?
20th Century American Military History Crucial Site