One thing about Chinese motors. They are cheap and you can build a prototype quickly, but the Chinese can't make ball bearings to save themselves! After 13 flights I had a motor fail. I ordered two replacement motors from hobbyking since there's a change I'd get a bad motor. Well now my quad no longer dips towards the from starboard side! I'm going to try to locate American made ball bearings for this motor. I think once I install quality bearings the motors will last.
It's windy today so I can't test loiter but my large 6000mah Lipo is here and pretty soon it will be time to test with that. A 6000ma is heavier. I can lift it without any problems but I do not want to risk a hard landing. A hard landing under load just might be too much for the fiberglass arms to take. So far I've been lucky, I can take pretty hard landings with the 2200ma battery I have. I've only broken props. I figured with the additional weight it might be a good idea to absorb the shock of a hard landing with foam or rubber. Have any of you tried to build shock absorbing landing gear? I was even thinking of using air filled wheels mounted on spring loaded shocks.