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So Wargaming...when are we gonna get the Sentinel AC3 "Thunderbolt" to complete the set?


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Anlushac11 #1 Posted Nov 16 2016 - 14:58

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We have AC1 with 2lbr (40mm)

 

We have the AC4 with 17lbr (76.2mm)

 

So when are you gonna complete the set and give us the AC3 with the 25lbr (87.5mm) main gun?

 

Should be very easy to model, just need to add 26lbr gun barrel and manlet to AC4 model.

 

The Alecto has a 25lbr at tier 4 so balancing the same gun for tier 5 Sentinel AC3 should not be that hard especially since the 25lbr fired AP, HEAT, and HE rounds.


Edited by Anlushac11, Nov 16 2016 - 14:59.


Blackhorse_Six_ #2 Posted Nov 16 2016 - 15:23

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I can't imagine servicing that gun in that turret ...

t8z5h3 #3 Posted Nov 16 2016 - 15:59

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View PostBlackhorse_Six_, on Nov 16 2016 - 10:23, said:

I can't imagine servicing that gun in that turret ...

 

is it another Sherman firefly?

Anlushac11 #4 Posted Nov 17 2016 - 15:49

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IIRC the 25lbr round being larger in diameter is a bit shorter than a 17lbr round so I would think it would be heavier but easier to move around. The AC3 turret and AC4 turret are larger internally than the AC1 turret. There were also plans for a AC3A with a larger turret ring. Not sure if that would have entailed a even larger turret for the AC3/4.

 

 



Anlushac11 #5 Posted Mar 18 2017 - 19:32

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Further information in case anyone cares...

 

The 2lbr was considered obsolete with 6lbr on its way out. Aussie's knew about 17lbr but were not optimistic on getting any. The 25lbr was considered the next best choice.

 

The AC3 Thunderbolt would have had a 25lbr gun with a 18in longer barrel giving a L/34 barrel length instead of the standard L/28 barrel length. This would have bumped muzzle velocity to 2000fps (610m/s) with Stage 2 charge.

 

The AC3 25lbr Thunderbolt would have used a enlarged turret with extended turret bustle and turret ring diameter enlarged to 63 inches or 1600mm.

 

Engine was to be the three Cadillac setup with the 66th and later hulls using a Pratt and Whitney Wasp radial (renamed Scorpion for tank use) rated at 400hp. Instead Robert Perrier designed the Perrier Cadillac rated at 396hp which was three Cadillac V8's using a common crankcase arrangement similar to the Chrysler A57 multi bank engine. The Perrier Cadillac used less space, weighed less, and had much better low end power.

 

100 hulls had been built and production was underway when the program was terminated in July 1943. The Melbourne tank museum had a AC3 Thunderbolt assembled from the prototype and parts scrounged off target ranges. The Melbourne tank Museum closed in 2006 and the AC3's whereabouts are unknown.

 

http://www.tanks-encyclopedia.com/ww2/Australia/AC3_Thunderbolt.php

 

 

 

 


Edited by Anlushac11, Mar 18 2017 - 19:33.





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