[EricH]

Originally Posted by MikLast

We are actually running a 4 wheel standard tank, i am guessing that might make a difference.

What's the wheelbase and track width? That's what would really make the difference, in terms of turning a 4WD tank.

Wheelbase: front axle to back axle (actually wheel point of contact with ground, but axle is usually close enough)

Track width: distance from left wheel to right wheel

If the wheelbase/trackwidth number is near 1, you're probably OK. If the wheelbase/trackwidth is significantly <1, no trouble at all (though I would consider adding a wheelie bar). If it's significantly >1, you will not want high-traction pneumatics on all 4 wheels, and may want to put some Colsons or slick-ish wheels on one end or on diagonal corners. Speaking of Colsons... that's another option to think about; I happen to know that they'll work in some fairly non-typical-FRC applications and keep coming back for more.