Got to try out the copperhead/5150 combo and I am impressed. Good job Viper, and for the price IMO its unbeatable.

First of all, while it doesnt have the feel of sensorless, and it has a feel that is unique unto itself, it is very smooth. The power delivery from low to mid throttle is very very smooth and tame while giving it a good on throttle gives a massive surge of power comes on smooth, which feels drasticaly different than my pro 4 combo which hits real hard. What the Viper combo does is provide a very usable powerband that is easy to drive hard without punishing you for being to quick on throttle.

I never knew sensorless could feel so good

BTW how many watts does this motor make?