[othello]

I think it does depend what motor you are using with those kontronik ESCs. I never noticed it with a 2 pole Fun 600/25. But i noticed it with a 8 pole Graupner 600M, a Neu 1512/2Y and a Neu 1515/2Y. The last 3 motors both have a noticeable resistance when you turn them with your fingers. The first one not (comparable to a feigao).