Is this an ESC problem?
I have a EFLU2680 F4U Corsair which has flown for a total of about 45 min max. I use a DX7 Tx on DSMX protocol. No crashes or mishaps.
Problem: the prop does not rev up to full power.
Yesterday I flew in fairly high winds and used full power for much of the flight time. I had used four 160 mAh batteries in rapid succession and ½-way through the last flight the plane lost power - it dropped down to just under ½ throttle. The power was just enough to keep the plane floating in the air but due to the wind gusts I had to land. I switched to a fresh battery but the problem remains
The prop spins freely and nothing is bent or out of shape mechanically. The batteries are fine. The motor seems to run fine but I can't get more revs than what correponds to a about a ½ throttle setting.
What should I suspect? The motor? The ESC?
If it is the ESC, do I need a complete new Rx board with ESC & servos?