@Thomcat
The germans built a couple what ifs during the war, LOL! tanks that were totally impractical and unusable…
I have the regular M4A3 sherman 75mm fully loaded combat weight at 32 tons
I don’t have a weight for the M4A3 76mm but it had to be something between 32 tons and 37 tons.
I have the M4A3E8 at 37 tons fully loaded…so the combination of the T23 turret and the HVSS upped the weight by 5 tons?
I also have the M4A3E2 at 42 tons and this minus the HVSS, so what would the combination of HVSS, the M4A3E2 body, and the T26 turret weigh? My guess is that it would’ve weighed around 45 tons, comparable to a Panther…The Jumbo already featured a reduced gearing final drive to eliminate failures and reduce the strain on the transmission and the engine. Cross country it probably would’ve done a lot better than the lighter Jumbo with the HVSS suspension even 3 tons heavier it would’ve had better flotation with lower PSI. I would still have to research the weight difference of the uparmored turret on the jumbo and the T26 turret but I don’t think it would’ve been that big of a difference.
The Pershing had some issues that the M4A3 didn’t have but were all of them attributed to the added weight? I mean, it was a whole different tank with a different set up, everything was pushed to the rear and bunched up together, the engine, transmission, and the final drive. How much did that play into some of the mechanical issues that it had? Mechanical issues that the Sherman didn’t have.
As a means to understanding if it was plausible to field an HVSS M4A3E2 with T26 turret, the IDF was still using the less powerful radial engine on their initial version of the 40 ton M51 and they never upgraded the final drive with more powerful gearing like had been done on the Jumbo, it had HVSS and the 105mm and modified turret upped the combat weight from the original M4A1 76mm HVSS 35 tons to 40 tons.
I think a HVSS Jumbo with T26 turret at 45 tons with the modified gearing on the final drive would have been comparable to a regular jumbo in terms of power but it would’ve also had a more stout suspension less prone to failure and better cross country performance.
As far as what ifs go, all the parts were available at the time, it could’ve happened, especially if the war had lasted longer like the 46’ folks like to fantasize about…as for advantages of fielding an HVSS Jumbo T26 over the Pershing? Outside of the Turret parts all the parts to maintain the tank in the field were already shipped and available in theater so you didn’t need to send out entire new stocks of replacement parts for an entirely new tank…there were events that led to a T26 turreted M4 almost happening so I think it’s a fun “what if” to toy around with…