Originally Posted by
Neu_Racer
Not many people run the 6900kv because its worthless. It is not rated for 3S but is slower than the 7700kv. Personally I would get him a Sidewinder 4600 combo. It can be had for around $130, can handle 3S (sidewinder with a 5700 is not rated for 3S due to amp draw) and will be extremely fast outside on 11.1v but real quick and controllable on 2S on the track.
I had a 5700 on 11.1v in a basher T4 last Summer and it was crazy fast outside. But too light and before got up to speed wind caught it and flipped it upside down every time.
that's a good idea. castle sidewinder 4600kv setup with a 3s lipo for crazy speed/wheelies and 2s for the track. you'd still need to be responsible on the trigger, but that would do pretty good in a T4.