zpb, I have it geared at 14/44 because it just starts to cog sometimes when I take off. Not bad, but just a bit. I DON'T like cogging, so I left it at 14/44. I don't know if I'm comparing apples to oranges, but I was running 14/46 in my buggy with the 8XL. I figure that if I went to the 9XL in the buggy, I'd go to 16/46. Now if you can follow my logic, I figured that I'd need to gear down a bit to compensate for the larger tires on the truck, so I'm back to 14/46 with the 9XL for being a good gearing in the truck. Since I'm running a 44T spur, I'm acutally a bit higher than I wanted. Sorry for the logic process, but I suck at math. Motor is still getting hot. About 160 after 5 minutes of "I'm trying to kill it" running.

The esc is running 120. What I know about the behavior of brushless systems, I should need to gear up a bit to run the esc harder and cool the motor off a bit, but I can't gear up any more. Or don't want to. Maybe I'll wind up keeping the Quark after all, but then I'll have to muck with the beautiful setup I have now.