Hot Weather Flying

[gmich99]

When flying in the afternoon in temps exceeding 90* F (32* C), the power to the motor suddenly cut to zero in mid-flight. Could this be heat-related? My first thought is that the ESC overheated. I had been flying for about 5 minutes. I unplugged the battery, allowed everything to cool, and flew it again for a couple minutes to make sure everything was working properly. There seems to be no permanent damage, and the helicopter was able to safely land after the loss of power.

[GCK]

If you’re flying with the stock ESC it will cut to 50% power when the mosfet temperatures reach 95 Deg C. Read the thread call "Sudden Drop in Power" and this should give you plenty of information.