[E-Revonut]

What batteries are being used? If the batteries aren't great that may be a problem.

Glitch - is a term used to describe a radio system cut out, loss of signal, where the vehicle behaves irradically

Cogging - is a stuttering type of motion at start up, not an issue with a sensored motor/esc, this happens as the esc and motor are "talking" with each other at start up to determine rotor position

Of course these aren't technical terms but as you can see I would guess more of a glitch than a cog, the whole point of a sensor based motor/esc is that you will have a smooth start up. If you pulled on the senor cord to much you may have damaged it. Try a good set of lipos, or any lipos for that matter, any of them should be able to keep up with a Novak motor, of course you may already be doing that. Also try contacting Novak, Novaktwo in here is generally helpful, if he doesn't know the answer he will get the answer for you.