I have run the 10L/4s combo and am now running the mega ACn motor(4580kv) on 2s. The 10L/4s was overly powerful for the track I'm going to run at. Also I shaved about 13.6oz off the weight on my crt.5ext bu switching setups. It handles soooooo much better now with the mega/2s setup. The mega a 6pole so the torque is there with decent speed.

Bye