AEC Armoured Car Mark III General Details Specifications Manufacture Date(s) 1944 Quantity Produced 205 Weight unknown Crew 4 M.G's small 2 M.G's large(>10mm) 0 Length 5.23 mtr Width 2.77 mtr Height 2.56 mtr Engine Details/Performance Max Road Speed 40 mph Max Cross Country Speed 0 mph Range Road 250 miles Range Cross Country 0 miles Fuel Type Unknown Fuel Capacity 0 gal Horse Power 158 hp Power/Weight unknown General Information The AEC Mk I was based on the four wheel drive Matador Artillery tractor and developed in 1941. The vehicle was designed to take the Valentine MkII turret with the Ordnance Q.F. 2pdr gun and 2 machine guns, but the MkIII was uprated to use the Ordnance Q.F. 75mm gun for the close support role and had thicker armour. Armour Details Turret Front 65mm@0°(65mm) Side 60mm@0°(60mm) Rear 60mm@0°(60mm) Top 10mm@90°(10 mm) Superstructure Front 30mm@45°(42mm) Side 30mm@0°(30mm) Rear 15mm@45°(21mm) Top 10mm@90°(10 mm) Hull Front 30mm@45°(42mm) Side 30mm@0°(30mm) Rear 15mm@45°(21mm) Top 16mm@90°(16 mm) Armour (x)mm @ (y)° (Effective mm @ 0°) Effective Armour - Maximum 65 mm - Minimum 16 mm Weapon Details Bren Gun History The Bren gun was licenced from the Czechoslovak ZB vz.27 light machine gun which was designed and manufactured in Brno from 1935. It fired the standard British .303 rifle round. Manufactured 1930 - 2004 Calibre 7.70mm Length L/82 Rate of Fire 500rpm   Ammunition Details Name/Id Calibre Weight MVelocity Quoted Penetration   Standard british .303 round - HPBT(MG) 7.70mm 0.01Kg   761M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.17 0.4 1.33 Penetration(mm) 11 9 5 Hit Probability(%) 98 98 90 Standard british .303 round -(MG) 7.70mm 0.01Kg   783M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.17 0.4 1.33 Penetration(mm) 11 9 5 Hit Probability(%) 98 98 90 BESA Heavy Machine Gun History Developed by BSA from the Czechoslovak ZB vz.60 heavy machine gun. It was mostly used as the main armament of the Light Tank Mk VIC and Armoured cars such as the Humber Mk I to Mk III. Manufactured 1940 - 1949 Calibre 15mm Length L/97 Rate of Fire 450rpm   AP(AP) 15mm 0.07Kg   915M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.12 0.25 0.61 1.93 7 Penetration(mm) 29 27 22 14 5 Hit Probability(%) 98 98 98 69 3 Ordnance Q.F. 75mm History This was a temporary fix to the problem of 6pdr guns not having a powerful enough HE shell. It was created by boring out the British 57mm 6pdr to take the American 75mm AP/HE shells, which reduced the Anti Tank performance but provided HE support. Manufactured 1943 - 1945 Calibre 75mm Length L/32 Rounds Carried  45   AP(AP) 75mm 6.58Kg   618M/Sec Range(Mtr) 100 200 400 800 1200 1600 2000 2400 Flight Time(Secs) 0.16 0.33 0.68 1.45 2.31 3.29 4.41 5.71 Penetration(mm) 79 78 76 71 67 63 59 54 Hit Probability(%) 98 98 98 88 54 25 15 3

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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