The trickiest thing on this build something far has been the recoil. Usually when I add a recoil unit the servos attached to a recoil unit or something solid which moves when the unit is elevated.
Here that is not possible as the roof is open and I have some gun breach detail. I wanted to have a moving breach with the recoil as that's got to be one of the perks about an open topped vehicle right?!
First thing to do was make the barrel slide and get a working elevation. Originally the Sherman elevation units lifting arm was in a slot on the side of the breach.
However with the breach moving with the recoil this wasn't possible I had to make a long arm with a slot cut in it which attached to the trunion to get the pivoting.
It's hard to see (thankfully) but highlighted in red.
The next stage was getting a recoil that had a servo fixed to the turret floor but also still worked when the gun elevated and depressed. On option considered was hiding the servo in the bustle and have a rod running through the fighting compartment to the breach. I discounted this at it would be visible and would limit and ammo storage I could make for the bustle.
In the end I placed the servo arm as close to the pivot point of elevation so when the gun was at extremes of elevation or depression it wouldn't move the barrel in and out.
Plan is to box the servo in with more detail and crew so the workings should be as inconspicuous as possible.
Steel gears were added at this point and metal tracks and sprockets from the panzer iii. I plan on either getting some more accurate sprockets made (panzer ones are a little big) or new covers which better imitate the early sprockets m18s used.
The Clarks and speaker are just in to test it all works, I'll be making a proper speaker box later and tidying the install.
A couple of bits were missing so I've made them back up, she also has had a new barrel with muzzle break from my bits box.
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