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United States' M4A4 medium tank

Photos

M4A4 Medium Tank:
United States' M4A4 Medium Tank
Aberdeen Tank Museum
M4A4 Medium Tank:
United States' M4A4 Medium Tank
U.S. Ordnance Dept.
M4A4 Medium Tank with spigot mortar:
United States' M4A4 Mine Exploder
Aberdeen Tank Museum
M4A4 Medium Tank drawing:
United States' M4A4 Medium Tank Drawing
U.S. Ordnance Dept.
Dragon Armor, 60278:
Dragon's Armor, 60278, Polish M4A4
Dragon Armor, 60284:
Dragon Diecast 1/72 Armor, 60284 France M4A4 Medium Tank

Design

Welded hull. Three piece bolted front. Early models had M34 gun mount and vision slots in hull eliminated. Later vehicles had the M34A1 mount.

The length of hull had to be extended for the 5 engines.

Was the main model supplied to England.

The 75 mm gun fired a 14.4 lb. AP round at a muzzle velocity of 2,050'/sec.

Production

Standardized in February 1942. Built by Detroit Tank Arsenal.

Variants

  • Tank Recovery Vehicle M32B4: Based on M4A4.
  • M4A4 Mine Exploder: Used spigot mortar bombs.

Specifications

  M4A4 medium tank, Sherman V
Crew 5
Radio SCR-508
Radio - command tank SCR-506
Physical Characteristics  
Weight 71,000 lb
34.8 tons, 36.25 tons
Length w/gun 19' 10.5", 20.3'
Length w/o gun 19' 10.5"
Height 8.9', 9'
Width 8' 7", 8.7'
Width over tracks  
Ground clearance 15.75", 17"
Ground contact length 13' 4", 13' 6"
Ground pressure 12.9 psi, 13.4 psi
Turret ring diameter  
Armament  
Main 75 mm
75 mm M3
75 mm M3, L/40
Secondary  
MG 3: MG
2: .30 cal MG
MG - coaxial 1: .30 cal M1919A4 MG
1: .30 cal Browning M1919A4 MG
MG - hull 1: .30 cal M1919A4 MG
1: .30 cal Browning M1919A4 MG
MG - antiaircraft 1: .50 cal MG
1: .50 cal M2 HB MG
Side arms 2" M3 Mortar
.45 cal submachine gun
Quantity  
Main 95, 97
Secondary  
MG .30: 4,750, 7,750
.50: 300
Side arms .45: 600
Mortar: 12 (4: Fragmentation Mk III, 4: M8 Smoke, 2: M2 Offensive Mk III, 2: Thermite)
Armor Thickness (mm) 1" - 2"
12, 20 - 85
Front: 2"@46°
Side: 1.5"
Hull Front, Upper 2"
50
Hull Front, Lower 1.5" - 2"
Hull Sides, Upper 1.5" - 2"
Hull Sides, Lower 1.5" - 2"
Hull Rear 1.5"
Hull Top 1"
Hull Bottom 0.5" - 1"
Turret Front 3", 3.2"
75
Mantlet: 1"
Turret Sides 2"
Turret Rear  
Turret Top 1"
Engine (Make / Model) Chrysler 5-line WC, Chrysler 5 line, 5: Chrysler, 5xChrysler 5-251
Bore / stroke  
Cooling Water
Cylinders 30, 5x6
Capacity  
Net HP 370@2,850 rpm, 425, 430@2,500 rpm
Power to weight ratio  
Compression ratio 6.5:1
Transmission (Type) Synchromesh
5 forward, 1 reverse
Steering Controlled differential
Steering ratio 1.515:1
Starter Electric
Electrical system 24 volt
Ignition Magneto
Gear ratio - 1st gear 7.56:1
- 2nd gear 3.11:1
- 3rd gear 1.78:1
- 4th gear 1.11:1
- 5th gear 0.73:1
- Reverse 5.65:1
Fuel (Type) Gasoline
Octane 80
Quantity 150 gallons, 160 gallons
Road consumption  
Cross country consumption 0.6 mpg
Performance  
Traverse 360°
Hand and hydraulic
Speed - Road 25 mph, 26 mph
Speed - Cross Country  
Range - Road 100 miles, 120 miles
Range - Cross Country 100 miles
Turning radius  
Elevation limits -12° to +8°
Fording depth 3' 6"
Trench crossing 8'
Vertical obstacle 2'
Climbing ability 31° (60%) slope, 60%
Suspension (Type) Vertical volute.
Horizontal spring, 3 bogies of 2 wheels each
Wheels each side 3x2
Wheel size 20" x 9"
Wheel size - idler 28 1/8" x 9"
Return rollers each side 3
Tracks (Type) Dry pin, double pin per shoe, rubber cleat
Length  
Width 16.5", 16.6"
Diameter  
Number of links 84
Pitch 6"
Tire tread  
Track centers/tread 6.9', 6' 11"

Sources:

  1. The American Arsenal, 1996
  2. Airfix Magazine Guide #26 American Tanks of World War 2, Terry Gander and Peter Chamberlain, 1977
  3. 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
  4. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
  5. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
  6. Tank Data, Aberdeen Proving Grounds Series, 1968?
  7. Tanks of World War II, Duncan Crow, 1979
20th Century American Military History Crucial Site