Originally Posted by BrianG

Not necessarily. Cogging is simply the ESC not being able to determine where the rotor position is by the back-EMF pulses. If it's turning, however little, you won't cog. What I'm thinking is that you are getting a large voltage drop on your batteries under the heavy current the 7700 requires. Oh, and you defintely don't want to run that motor at 14.4v, that's almost 111,000 rpm!! :eek: ...assuming of course that the batteries actually stay at 14.4v.

If you're looking for batteries for that setup, I'd go with something that has a large Ah and/or C rating to be able to supply at least 100A continuously with minimal voltage drop. Otherwise your lipos will heat up fast and may be damaged.

Personally, the 7700 is not sized right for that truck. Maybe in a 2-3lb vehicle. Don't forget; as kv goes up, torque goes down and that motor may simply not enough torque to get the vehicle moving at a decent speed. Again, I'd say go with the 4600 or lower kv motor, use higher voltage, and gear appropriately. I am almost positive you'll be satisfied.