It failed spinning up. Its strange because i'm running a CC25. But I have disabled the BEC and am running one externally. I have never had this much trouble out of speed controls. I have had two literaly burn up and one went out. The 25 Just does not seem to be wroth anything. My TREX flys great. But I just don't know how much I enjoy messen with an electric heli. But anyway I really don't know whats going on right now. The heli should not be overly stiff. the gear lash has been set and all of the ball bearings are in good working order. but thanks for the idea.