bdebde, didn't you have trouble with the bearing standoff on the spur being too high?

RC, electric buggies are capable of some pretty high speeds. In excess of 50 mph, but just like anything else, speed comes at a price. More broken parts and more heat. I usually run my buggy on a track and when running the 7XL gearing 14/46, I haven't seen a nitro buggy yet that is faster. At 12/46 it's still very fast and the acceleration is unbelievable. I've been running an 8XL lately though. It doesn't get as hot as the 7XL did and I'm getting a bit more runtime. I usually run it geared at 14/46.

There really isn't much difference between the 7XL and 8XL. With the 8XL, you just gear up a bit more, but have the ability to gear down too.