Questions you need to resolve in all that:PunctuationHorror wrote: ↑22 Apr 2022 23:43And here I show you how a Pz III could have had a bigger turret ring while sporting sloped side plates. An upgrade easily to implement that leads to a bigger turret ring, a bigger turret and a bigger gun.
Reverse sloped sides were common in SdKfz 221, 222, 231 etc. It can be seen on the turret of Pz IV, too. This would not have been rocket science.
The chassis of Pz IV is far from perfect. Especially the early versions are geometrically complicated. Pz III is much cleaner and therefore easier to produce. No fancy upper structure, no weird looking back.
With the reverse sloped sides, a Pz III can have a bigger turret than a Pz IV with usual sloped sides. So things have turned: Now Pz IV has to have the smaller turret and can't be upgraded properly.
Pz III has torsion bars while Pz IV has bogie wheels.
Basically, we can do the same 'family tree' we see above with a Pz III chassis.
I'm wondering if the autoloading 75mm aircraft Pak 40 would make it possible to get by without a loader and thus reduce the crew to four (or three in a Stug). Maybe increase the magazine from 12 to 20 or 24 rounds, so the gunner or radio guy does not have to reload the magazine in battle. Later fit the 75mm L70 KwK 42 with this magazine mechanism. Ergonomics would be better and new reverse slope sided Pz III could have a bigger turret anyways.
Russians stuffed a 85mm gun into their T-34 and a 100mm in their T-34 based Su100. Germans put a 105mm Howitzer in a Stug and called it Sturmhaubitze. So what about the 88mm KWK 36 in a Stug? However, it would be too much for a turreted P III/IV, I guess.
How much does all that new, extra armor weigh compared to the original armor?
Does the turret ring size change? If so, how and can a turret basket for the crew to stand / sit in still be used? It the turret ring overhangs the lower hull sides, then you are still limited in recoil length and the size of the turret basket. How does that effect the design?
How does maintenance of things like the transmission occur? This, if the transmission has to come out, how do you do that?
With the autoloader, is the type of ammunition selectable? After all, having armor piercing shot loaded when you need HE doesn't do much good...
How is the autoloader reloaded, particularly in combat?
Does the autoloading system require power?
What is the weight of all these different guns and how does that effect the design?
How are you changing the assembly of the upper and lower hull? On the original Pz III and IV the two are separate assemblies and bolted together.
I doubt that the BK 7.5 cm gun and magazine as designed would fit in the Pz III in any case
The gun is gigantic in terms of the added autoloader, and the ammunition carousel adds considerable length to the whole assembly.