rcduder

its totally cool man im glad to help any time

cogging is basically what u could call glitching in a brushless motor and since you cant solder any capacitors on a brushless motor there not much you can do about it which is why sensored is the better way to go for racing because glitching like this is bad for racing, what happens is the motor at low end will stutter until u let off the throttle and get back on it again. what causes this is the esc trying to find the position of the rotor to keep it going when you hit the throttle which is what the sensor on a sensored motor helps with which = no cogging

hope this helps