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.

General Details Specifications Operational Date(s) 1940 - 1945 Quantity Produced 130 Weight 13.6 tonne Crew 2 M.G's small 1 M.G's large(>10mm) n/a Length 3.88 mtr Width 1.64 mtr Height 1.90 mtr Engine Details/Performance Max Road Speed 34 mph Max Cross Country Speed 19 mph Range Road 124 miles Range Cross Country 49 miles Fuel Type Petrol Fuel Capacity 29 gal Horse Power 190 hp Power/Weight 13 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 Front 35mm @ 5° (35mm) Side 20mm @ 15° (21mm) Rear 10mm @ 15° (10mm) Top 9mm @ 90° (9mm) Superstructure Front 35mm @ 20° (37mm) Side 20mm @ 0° (20mm) Rear 8mm @ 35° (10mm) Top 5mm @ 90° (5mm) Hull Front 35mm @ 25° (39mm) Side 20mm @ 0° (20mm) Rear 8mm @ 35° (10mm) Top 6mm @ 90° (6mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 39 mm - Minimum 6 mm

Weapon Details Mitrailleuse modèle 1931 (Machine Gun) 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. Manufacturer Reibel Manufactured 1932 - 1945 Calibre 7.50mm Length L/80 Rate of Fire 450 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) 100 200 400 800 1200 1600 2000 2400 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) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.15 Penetration(mm@30°) 1 Penetration(mm@0°) 2 Hit Probability(%) 98 Weapon Details 37 mm SA M1938 L/33 Calibre 37mm Length L/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) 100 200 400 800 1200 1600 2000 2400 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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