7.5 cm KwK 40 L/43 vs. L/48
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BDV
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7.5 cm KwK 40 L/43 vs. L/48
A short technical question on the above. Given PzIV turret weight/specs, were the addittional stresses induced by the heavier, longer L48 compared to the L43 trivial, or not?
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peeved
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Re: 7.5 cm KwK 40 L/43 vs. L/48
Since both 7,5 cm Kw.K. 40 L/43 & L/48 used the same cartridges and had the same normal recoil of 480 mm it is entirely possible that the slightly heavier L/48 had lower firing stresses both through the slightly added weight and the fact that muzzle brakes typically increase in efficiency at higher muzzle velocities.
Markus
Markus
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BDV
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Re: 7.5 cm KwK 40 L/43 vs. L/48
Markus, thank you. Still with a heavier and longer gun, wouldn't there be increased stresses on the turret ring during travel (leading for example to more jams)?
Nobody expects the Fallschirm! Our chief weapon is surprise; surprise and fear; fear and surprise. Our 2 weapons are fear and surprise; and ruthless efficiency. Our *3* weapons are fear, surprise, and ruthless efficiency; and almost fanatical devotion
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peeved
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Re: 7.5 cm KwK 40 L/43 vs. L/48
According to Datenblätter für Heeres-Waffen, -Fahrzeuge und -Gerät the L/43's total weight was 670 kg and the L/48's 750 kg. Maybe the 80 kg weight increase necessitated adjusting the gun's balancing gear but the procentual increase in turret weight due to the new gun must have been quite negligible.
Markus
Markus