How you coming on your tank? I am also part way into building a 1:6 scale
abrams. What are you using for wheels and tracks. I have turning
wheels on a lathe from stacks of plywood glued together but I don't know
how well they will hold up. My track system is too complicated to explain
but I can sent a picture if you like. I am planing to use a wheel
chair motor controller that I picked up on ebay. Let me know if you want to
compare any notes.
Steve