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

KV-1 Model 1941 in the winter of 1942 to 1943.

KV-1 Model 1941, Moskovskii Osaviakhimovyets (Moscow branch of the League of Air and Chemical Defense) purchased the tanks.

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. Hull MG was added.

Extra Armor

Some of the KV-1s had extra armor added.¹² Some had apliqué armor added, while others had screens attached by bolts.¹²

The foundries at Kuznets Basin produced a cast turret.¹² This turret weight over seven tons.¹²

Production

Produced in 1941.

Variants

• KV-1 1941, KV-1B:
• KV-8: Had flame thrower in turret.¹²

	KV-1 19412	KV-1B
Crew	52	512
Physical Characteristics
Weight	103,617 lb 47.5 tons2	47.5 tons12
Length w/gun	22' 8", 6.25 m2	22.3'12
Length w/o gun	22' 2"
Height	9' 7", 2.75 m2	10.65'12
Width	10' 11", 3.25 m2	10.93'12
Width over tracks
Ground clearance	0.45 m2
Ground contact length		13.8'12
Ground pressure	0.78 kg/cm2 2
Turret ring diameter
Armament
Main	76.2 mm ZiS-5 L/42 76.2 mm 1940 F-342,7	76.2 mm M1938/3912 76.2 mm ZiS-5 L/41.612
Secondary
MG	3-4: 7.62 mm DT MG2	3: MG12
Side arms
Quantity
Main	111-1142, 135 (BR-350A, OF-350, Sh-350A)	11112
Secondary
MG	3,0242	3,02412
Side arms
Armor Thickness (mm)
Hull Front, Upper	75+26, 1102	75+35, 11012
Hull Front, Lower	75+31
Hull Sides, Upper	75-1102	75 - 11012
Hull Sides, Lower	90
Hull Rear	32, 752
Hull Top	30-402	3512
Hull Bottom	30-402	3512
Turret Front	100, 1102	35 - 10012
Turret Sides	95, 1102
Turret Rear	1102
Turret Top	30, 352
Engine (Make / Model)	V2K3, W-2-K2	V-2K12
Bore / stroke	4 stroke2
Cooling
Cylinders	V-122	1212
Capacity
Net HP	600@2,000 rpm2	55012
Power to weight ratio	12.6 hp/ton2
Compression ratio
Transmission (Type)
Steering
Steering ratio
Starter
Electrical system
Ignition
Fuel (Type)	Diesel2	Diesel12
Octane
Quantity	600-615 liters2
Road consumption
Cross country consumption
Performance
Traverse	360°	360°
Max speed	21 mph 29 kph2	22 mph12
Cross country speed	10 mph
Road radius	155 miles, 250 km2	140 miles12
Cross country radius		94 miles12
Turning radius
Elevation limits
Fording depth	5.2' 1.45-1.6 m2
Trench crossing	2.8 m2
Vertical obstacle	0.9-1.2 m2
Climbing ability	36°2
Suspension (Type)
Wheels each side
Return rollers each side
Tracks (Type)
Length
Width		2' 3.5"12
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. Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1933-1942, Thomas L. Jentz, 1996
5. Panzer Truppen The Complete Guide to the Creation and Combat Employment of Germany's Tank Force 1943-1945, Thomas L. Jentz, 1996
6. Tanks of the World, 1915-1945, Peter Chamberlain, Chris Ellis, 1972
7. Jane's World War II Tanks and Fighting Vehicles The Complete Guide, Leland Ness, 2002
8. Tanks of World War II, Duncan Crow, 1979
9. Battle Winning Tanks, Aircraft & Warships of World War II, David Miller, 2000
10. Tank Data, Aberdeen Proving Grounds Series, 1968?
11. The Illustrated Guide to Tanks of the World, George Forty, 2006
12. Airfix Magazine Guide 22 Russian Tanks of World War 2, John Milsom and Steve Zaloga, 1977

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