The 9XL on 5S actually scared me. At first I didn't want to run it because I was feeling like something just had to break. There was just too much power. Blipping the throttle a bit too hard resulted in my truck being on its lid. I really feel that it could have done a standing back flip if I had tried.

Make no mistake that putting things down on paper does not equal what happens in real life. On paper, the 9XL on 5S should have been the equivalent of a 7XL on 4S, but that wasn't the case. In the case of the Feigao motors, adding voltage also ups the torque. I just couldn't drive it on the track, no matter how much I geared down or up. Needless to say, I went back to 4S.

It was a hoot though, and good from dropping jaws. I still keep the 5S pack in my field box for times when I just want to make the nitro guys really nervous.