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France
AMR40 (AMX R-40)

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The AMR40 was designed in 1939, manufactured by Renault based on the existing fully tracked AMR35 and was in use from 1940 to 1945.

Flag of World War 2 France
Photo of AMR40 (AMX R-40)

General Details
Specifications
Operational Date(s)1940 - 1945
Quantity Produced130
Weight13.6 tonne
Crew2
M.G's small1
M.G's large(>10mm)n/a
Length3.88 mtr
Width1.64 mtr
Height1.90 mtr
Engine Details/Performance
Max Road Speed34 mph
Max Cross Country Speed19 mph
Range Road124 miles
Range Cross Country49 miles
Fuel TypePetrol
Fuel Capacity29 gal
Horse Power190 hp
Power/Weight13 hp/tonne
General Information
The AMR40 was designed in 1939, manufactured by Renault based on the existing fully tracked AMR35 and was in use from 1940 to 1945.

The vehicle was powered by Somua 'V8 190hp' petrol powerplant producing 190 HP which could drive the vehicle on roads at up to 34 mph with a range of about 124 miles before refuelling. Its cross country performance was good providing a max speed of about 19 mph and a range of about 49 miles.

It was armed with 1 light machine gun , a Mitrailleuse modèle 1931. Its main armament consisted of a 37 mm SA M1938 L/33 which could penetrate 36 mm of flat plate at 100 metres

This was an uprated AMR35 using AMX suspension on an extended chassis providing better cross country performance. The armour was increased to 35mm on the front and 20mm to the sides.

Armour Details
Turret
Front35mm@(35mm)
Side20mm@15°(21mm)
Rear10mm@15°(10mm)
Top9mm@90°(9mm)
Superstructure
Front35mm@20°(37mm)
Side20mm@(20mm)
Rear8mm@35°(10mm)
Top5mm@90°(5mm)
Hull
Front35mm@25°(39mm)
Side20mm@(20mm)
Rear8mm@35°(10mm)
Top6mm@90°(6mm)
Armour (x)mm @ (y)° (Effective mm @ 0°)
Effective Armour - Maximum 39 mm - Minimum 6 mm



Weapon Details
Flag
Mitrailleuse modèle 1931
(Machine Gun)
Blank
photo of Mitrailleuse modèle 1931 from Reibel from Wikipedia
History
Designed by Lt Colonel Reibel, the FM 24/29 was developed into a heavier machine gun capable of relatively sustained fire, by giving it an extremely thick and massive barrel, to act as a heat sink.
ManufacturerReibel
Manufactured1932 - 1945
Calibre7.50mm
LengthL/80
Rate of Fire450 rpm
Number of Rounds 2400
 
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
7.5 MAS
(AP Standard Small Arms)
7.50mm 0.009Kg 820M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.36 1.2
Penetration(mm@30°) 10 7 4
Penetration(mm@0°) 12 9 5
Hit Probability(%) 98 98 96


 
7.5 MAS
(BALL Standard Small Arms)
7.50mm 0.009Kg 820M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15
Penetration(mm@30°) 1
Penetration(mm@0°) 2
Hit Probability(%) 98


Weapon Details
Flag
37 mm SA M1938 L/33 Blank
Calibre37mm
LengthL/33
Number of Rounds 90
 
 
Ammunition Details
Name/Id Calibre Weight MVelocity Explosive Content
AP
(AP Armor Piercing)
37mm 0.56Kg 701M/Sec
Range(Mtr)1002004008001200160020002400
Flight Time(Secs) 0.15 0.3 0.64 1.46 2.54 4.04 6.22 9.81
Penetration(mm@30°) 31 28 24 19 15 11 7 5
Penetration(mm@0°) 36 33 28 23 18 13 9 6
Hit Probability(%) 98 98 98 88 44 15 3 1

Hit probability is based on a static 2 x 2.4 metre panel at 0 degrees(vertical) at the range specified.

The data that has been used to create these records has come from Wikipedia, The Lone Sentry, The Bundes Archive and numerous books and websites that have provided the detailed information that has not been available anywhere else. The information we use to calculate the penetration tables, flight times and the hit probability comes from the Gun Calibre, the Shell Mass(Kg) and the muzzle velocity, plus range reductions to allow for gravity and wind resistance. This calculation originally came from a pre-war Krupp calculation which has been modified, and seems to fit the actual test results.

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