I have a Hacker motor and ESC in my Fliton Element 30 ( stock as supplied by Fliton with the kit recommended for use with 4S lipo system and I'm running the recommended prop). I had flown it a few flights during our winter here, just enough to know that it flew well with plenty of power. Last weekend I took it to the field and flew it to find that I had no increase in power above 3/4 throttle position. I'm flying with a 4S lipo pack and the radio is a 9303X 2.4 ghz. Since the last "good power" flight, I have changed the rx. During the last flight I had an "in flight reset" of the rx and had no control for a few seconds. After reset I landed and subsequently changed the rx from a 6100 to a AR7000. That is the only change that I've made.

I have checked the transmitter throttle curve (linear 0 to 100%), travel end points ( 100% both ways) and I have no "funny mixes" in effect that I can find. I put an eagle tree on it on the bench and The system is pulling about 23-25 amps all the way from 3/4 to full throttle. If I run up quickly it will spike at 35 amps or so, but settles back to the 23-25 amp range. The motor "sounds" and the thrust "feels" the same from 3/4 to full throttle.

Any Ideas out there what might be going on?

TIA

George