Clunking sound

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I have the P4A and just recently it started making two clunk sounds when arming. And as it's sitting there idling, it will occasionally make the same clunking sound. Not on a regular interval, just randomly. The motors seems to spin smoothly by hand, no kinks. They're not loose. This is even if I don't have props on it.

Is there any maintenance or checks I can do for that?

Thanks
Andy
 
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While arming, could be the gimbal going through its calibration. Might even be a glitch in one of the ESCs. Do you hear anything when hovering?

My Mini2 props give an occasional clunk when arming.
 
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it was definitely coming from the motors or part of that system. And for the prop hubs, it was even when no props were on it.

However, I armed it again last night, let it idle for over 5 minutes and didn't hear it again. But the 4 or 5 times I did it previously, it was doing that. Then took it for a short flight and didn't seem to hear it again.

Hopefully it will stay that way. Thanks for the replies.
 
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Capt KO

Capt KO
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Not many moving parts so worth checking for loose or missing screws. Hope all is well now, good luck.
 
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Sounds good AndyAlex. Possible a bit of dirt got into a motor, very tight clearances in there, and has now gone? Just feel the motor temperatures after a flight for any overheating.
 

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