Twice earlier this winter, I have had a go wit my quadcopter,and both times I went home with a damaged copter due to a blade snapping in mid-ait during easy flying or hover. Since the temperatures were arounbf -10 degrees C, I thought this could have been caused by the plastic in the propeller becoming brittle by the low temp, so postponed further flying.
Today I went for a flight again, and the hover in stabilize was quite good, suddenly a blade just snapped and the copter fell to earth. This time the temp was around 0 degrees C, so I dont think the temperature could have any influence. These were all cheap ebay propellers so I guess that the quality is just too bad, but could anyone advice some better props? I need the bigger 12x4.5 ones as I have the motors with larger kv.
Anyhow it puzzles me that the props are so bad that they are really not working, they were all balanced as well, anyone with a good explanation for this?