SBX8
lvl.4
Flight distance : 734442 ft
Germany
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Yeah, done all that before making the video.
Heard a 'strange' noise while the motors were still spinning - after turning them off. Started and shut down again - the same.
Spinned all motors by hand and three are just fine, hardly any noise to hear, one made this rattling sound.
Did several flights that day. First it was all fine, nothing to hear, then - all of a sudden - that noise.
Also without the propeller that motor does not turn as smooth as the other three.
It's definitely a defective bearing.
Should something like that happen? No, it shouldn't.
Could it happen? Yes, at any time.
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