Motor is a hacker Q-80 14XS, as far as amp draw is concerned I never actually put it on a watt meter to be exact. But I can tell you that the motor comes down approximately the same temperature. Now for an FAI sequence I would expect a noticeable difference because of the heavier throttle requirements to fly those sequences. But as far as the AMA Advanced sequence is concerned the mah usage and motor temps are pretty close. The 3B uses just a bit more mah overall but nothing really substantial, 150-200mah.