Brushless motor has grinding sound when rotating

[Philbruh]

Hi guys,

Recently I tried to move my components onto a new frame. As I was mounting the motors I noticed that one of them wasn't spinning like the others and was making a grinding sound. I forced a few rotations manually but eventually, the motor would not budge, even with a heap of force.

I have a feeling something might be stuck inside. Is it possible to open it? Its an emax RS2205s 2300kv motor, but cant figure out how to do so

 

[ringolong]

Sounds like a loose magnet. You should be able to remove the clip and re-glue the magnet.

 

[Philbruh]

Finally found what it was, there was a small piece of metal that was stuck between 2 of the magnets. Once I removed it the bell was moving freely again

My question now is would this have caused much internal damage after I forcefully rotated it?

 

[Jackson]

My question now is would this have caused much internal damage after I forcefully rotated it?

You'll find out. You should put a couple of drops of a thin oil (not W-30) on the bearings too.

 

[KentA]

Finally found what it was, there was a small piece of metal that was stuck between 2 of the magnets. Once I removed it the bell was moving freely again

My question now is would this have caused much internal damage after I forcefully rotated it?

I'd be more worried about where that piece came from.