Originally Posted by jspcrepair
I got the new tail unit today and put it on and took it outside for a test flight (about
5 minutes) and... it flies Perfectly now!
I think it actually responds better than the old one with smoother turns and quicker
It is about 100 °F - 103 °F outside
Problem solved is always good news. You could try "Option One" with the old tail motor.
Same hot weather here with V911's. Except I have a wonderful crosswind that makes it too much fun to pass up. So, out in my back yard, fly a battery, cool off inside, then outside again with another V911 and another battery. That goes on all day until the wind stops.