Yeah, about 150 oz/in is good at about .10 seconds. You really don't need much more than that unless you are running on extreme traction surfaces. Then 200 oz/in. I have run a JR 9100S ( way to fast, had to turn the speed down), then the 9100T ( obnoxious amount of torque but not fast enough) a couple different HiTech's and have had a XP 1015 in there for a couple years not. That's plenty fast and strong for me and my daughter...