David, sometimes we all need to sit on the porch and just have a ponder, then things can become much clearer
. It is actually quite a good system. As there is no fixed sprocket or idler system on the back, there is nothing to stop the bogie from being able to fully spin and destroy the mudguard. The more I see and understand the complexities of these machines it give a greater appreciation of the design that goes into any and all machinery.
Bruce, Bowerbird is the original name that was given at the time and was also still readable before I blasted the hull. I did do a clear stencil before that was done so I can replace it back to the original location. The other tank name is Wombat.