Da Paul Challenge

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Paul M. Weir

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That's a fake. Built from 2 KV hulls, 2 KV-1E turrets, a KV-2 turret, a T-26 m33 turret, a T-40 turret and what looks like a T-38 turret. The hulls look like from the Trumpeter model range.
 
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Brad M-V

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That thing would slide out of it's tracks trying to turn if it was, but I'm still impressed you picked off all the parts, Paul. You truly know your stuff! ;-)
 

von Marwitz

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That's an ISU-152-2 (or ISU-152BM or Object 247) with a BL-10 gun.

Basically a standard ISU-152 with another gun. Even the predecessor of th BL-10 (the BL-8) had so many issues that it was rejected around mid 1944.

One of the many issues with such long gun tubes is that they warp. The Germans also experimented with longer gun tubes to enhance the punching power of 75mm and 88mm guns IIRC running into these issues. Furthermore, the ISU with such a long and heavy gun would have been difficult to steer and the front wheels would have been exposed to extra strain. Again, similar issues were encountered with some German Jagdpanzers.

von Marwitz
 

Harms

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That's an ISU-152-2 (or ISU-152BM or Object 247) with a BL-10 gun.

Basically a standard ISU-152 with another gun. Even the predecessor of th BL-10 (the BL-8) had so many issues that it was rejected around mid 1944.

One of the many issues with such long gun tubes is that they warp. The Germans also experimented with longer gun tubes to enhance the punching power of 75mm and 88mm guns IIRC running into these issues. Furthermore, the ISU with such a long and heavy gun would have been difficult to steer and the front wheels would have been exposed to extra strain. Again, similar issues were encountered with some German Jagdpanzers.

von Marwitz
This.

This version underwent trials but was rejected due to several unsatisfactory results.
 

Paul M. Weir

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That's easy for longer time members as it was discussed as a classroom (literally) example of how not to design a tank: The infamous Vickers Valiant.
 

Paul M. Weir

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That looks a lot like the SPA-Viberti AS43. Differences are rounded mudguards/wheel-arches and a cut down turret (with roll bar for AA MG). The AS43 used much of the components of the Autoprotetto S37 (IVN 22) and TL37 (IVN 25), which had rounded mudguards/wheel-arches. The turret seems to be a very sawn off version of the AB41 and L6/40 (IVN 21, 6) turret.

So my best guess is a prototype AS43. Apparently the prototype was sent to NA and found abandoned by British troops. Very few were produced by the RSI and issued to the National Republican Guard for anti-partisan work. As few as 2 production vehicles might have been produced.

In ASL terms use all the values of the S37 except no 11PP and the turret armament of the AB41. The prototype in addition would be an OT 1MT that MUST be CE to fire.

EDIT: I saw the prototype also referred to as the Autobilinda TL37. Whether that was a "working" name for the prototype or a parallel development is unclear.
 
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Yuri0352

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The Autoprotetto S.37... Italian, of course.
Correction...
Upon further research, this appears to be the prototype Autoblindo T.L. 37 version of the Autoprotetto S.37.
The sole example of this vehicle was captured by the British after being abandoned due to an apparent mechanical failure near Sidi Rezegh in 1941.
 
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