[lincpimp]

Out of a slipper or a clutch, I would much prefer a slipper. Some sort of shock protection is a good idea, IMO. When Mike brings out the slipperential, that will be great for a buggy, or truggy. I prefer the feel of a direct pinion better than the clutch. Plus it is less stuff to go wrong, and it does place less stress on the motor bearngs, and the motor mount. My yusa uses a L braket motor mount, and needs some braces, as the addl weight of the clutch and the length will flex the mount quite a bit.