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Soviet Union's KV-1 Model 1941, KV-1B heavy tank

Design

Had extra 25-35 mm of armor that was screwed onto the turret and welded to bow and driver's area. Starting in 1942 these had a cast turret. A hull machine gun was added.

Extra Armor

Some of the KV-1s had extra armor added. Some had apliqué armor added, while others had screens attached by bolts.

The foundries at Kuznets Basin produced a cast turret. This turret weight over seven tons.

Armament

In 1941 the 76.2 mm ZiS-5 was first installed in the KV-1.

Production

Produced in 1941.

Variants

  • KV-1 1941, KV-1B:
  • KV-8: Had flame thrower in turret.

Specifications

  KV-1 1941
Crew 5
Physical Characteristics  
Weight 103,617 lb
47.5 tons
Length w/gun 22' 8",
6.25 m
Length w/o gun 22' 2"
Height 9' 7", 2.75 m
Width 10' 11", 3.25 m
Width over tracks  
Ground clearance 0.45 m
Ground contact length  
Ground pressure 0.78 kg/cm2
Turret ring diameter  
Armament  
Main 76.2 mm ZiS-5 L/42
76.2 mm 1940 F-34
Secondary  
MG 3-4: 7.62 mm DT MG
Side arms  
Quantity  
Main 111-114, 135 (BR-350A, OF-350, Sh-350A)
Secondary  
MG 3,024
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 75+26, 110
Hull Front, Lower 75+31
Hull Sides, Upper 75-110
Hull Sides, Lower 90
Hull Rear 32, 75
Hull Top 30-40
Hull Bottom 30-40
Turret Front 100, 110
Turret Sides 95, 110
Turret Rear 110
Turret Top 30, 35
Engine (Make / Model) V2K, W-2-K
Bore / stroke 4 stroke
Cooling  
Cylinders V-12
Capacity  
Net HP 600@2,000 rpm
Power to weight ratio 12.6 hp/ton
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Diesel
Octane  
Quantity 600-615 liters
Road consumption  
Cross country consumption  
Performance  
Traverse 360°
Speed - Road 21 mph
29 kph
Speed - Cross Country 10 mph
Range - Road 155 miles, 250 km
Range - Cross Country  
Turning radius  
Elevation limits  
Fording depth 5.2'
1.45-1.6 m
Trench crossing 2.8 m
Vertical obstacle 0.9-1.2 m
Climbing ability 36°
Suspension (Type)  
Wheels each side  
Return rollers each side  
Tracks (Type)  
Length  
Width  
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  
  KV-1B
Crew 5
Physical Characteristics  
Weight 47.5 tons
Length 22.3'
Height 10.65'
Width 10.93'
Width over tracks  
Ground clearance  
Ground contact length 13.8'
Ground pressure  
Turret ring diameter  
Armament  
Main 76.2 mm M1938/39
76.2 mm ZiS-5 L/41.6
Secondary  
MG 3: MG
Side arms  
Quantity  
Main 111
Secondary  
MG 3,024
Side arms  
Armor Thickness (mm)  
Hull Front, Upper 75+35, 110
Hull Front, Lower  
Hull Sides, Upper 75 - 110
Hull Sides, Lower  
Hull Rear  
Hull Top 35
Hull Bottom 35
Turret Front 35 - 100
Turret Sides  
Turret Rear  
Turret Top  
Engine (Make / Model) V-2K
Bore / stroke  
Cooling  
Cylinders 12
Capacity  
Net HP 550
Power to weight ratio  
Compression ratio  
Transmission (Type)  
Steering  
Steering ratio  
Starter  
Electrical system  
Ignition  
Fuel (Type) Diesel
Octane  
Quantity  
Road consumption  
Cross country consumption  
Performance  
Traverse 360°
Speed - Road 22 mph
Speed - Cross Country  
Range - Road 140 miles
Range - Cross Country 94 miles
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 2' 3.5"
Diameter  
Number of links  
Pitch  
Tire tread  
Track centers/tread  

Sources:

  1. Russian Tanks of World War II Stalin's Armored Might, by Tim Bean & Will Fowler, 2002
  2. Russian Tanks and Armored Vehicles 1917-1945, by Wolfgang Fleischer, 1999
  3. 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
  4. Airfix Magazine Guide 22 Russian Tanks of World War 2, John Milsom and Steve Zaloga, 1977
  5. The Encyclopedia of Weapons of World War II, Chris Bishop, 1998
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