Originally Posted by Akudou

I ran a 5.5T brushless on my TT01-D using 25/55 once and it ripped my pinions and spurs 3 times in 1 night. Running on a 9T Brushless is safer but it depends on the traction of your tire too. Too much traction can rip the pinion, spurs or both. The punch of the programme card and throttle precentage should take into consideration too.