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Old 11-03-2020, 02:16 AM   #41
Michele
 
Join Date: Aug 2004
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Default Re: Unsually modified Tanks

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Originally Posted by Rupert View Post
Also it was (incorrectly) rumoured to be a fire risk. Besides it didn't stop sticky bombs from sticking, though they weren't a major problem for tanks, being seldom used on them.

As for the skirts and other sheets of steel the Germans started adding - they were not a development of the paste, but a different idea entirely, and were originally intended as a defence not against the HEAT warheads of early LAWs (against which they weren't that useful anyway because those weapons tended to have less stand-off than was optimal so giving them more didn't hurt them much), but against Soviet 14.5mm anti-tank rifles, against which they were reasonably effective. Indeed, their effect vs the AT rifles when mounted on the sides of the Panther's hull was good enough that the Panther II was put on hold, as the weakness of the mid-hull side armour was a major reason for the Panther II's development.
All true, and to boot, the Schürzen came before the Zimmerit paste. Just like the Soviet PTRD-41 anti-tank rifle was a thing in, well, 1941, and the first Hafthohlladung did not exist before 1942.
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Old 11-03-2020, 03:17 AM   #42
Luke Bunyip
 
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Default Re: Unsually modified Tanks

Apparently the Australians stuck some Hedgehog ASW mortars in a box on the back of the engine deck of Matilda IIs. Which is only fitting, as the weapon was originally designed as an anti vehicle weapon prior to it's application in ASW.
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Old 11-04-2020, 10:50 AM   #43
Michele
 
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Default Re: Unsually modified Tanks

We've talked about in-the-field modifications to armor and weaponry, and about other equipment. But what about the engine?

The Ford V8 GAA engine installed on many Sherman variants and IIRC other armored vehicles had a rated 500-HP output at the limit of 2,600 rpm. But that was restricted by providing it with a governor, since, in practice, it could rev up to higher rpms and deliver more HPs. Crews were known to remove the governor, in order to be able to muster more power in emergencies. That was not a good thing for the engine, I think, but still better than being hit by a German 75mm round. Or so the crewmen thought.
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Old 11-04-2020, 12:21 PM   #44
The Colonel
 
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Default Re: Unsually modified Tanks

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Originally Posted by Michele View Post
We've talked about in-the-field modifications to armor and weaponry, and about other equipment. But what about the engine?

The Ford V8 GAA engine installed on many Sherman variants and IIRC other armored vehicles had a rated 500-HP output at the limit of 2,600 rpm. But that was restricted by providing it with a governor, since, in practice, it could rev up to higher rpms and deliver more HPs. Crews were known to remove the governor, in order to be able to muster more power in emergencies. That was not a good thing for the engine, I think, but still better than being hit by a German 75mm round. Or so the crewmen thought.
I recall quite a lot of tanks were down regulated - often to protect the tracks and/or transmission. Seem to recall it was the main reason that many models got slower when armour was added - the added mass would otherwise butcher the running gear. Ironically the US was probably the nation with the least to worry about on this score.
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