Grinding sound on moror power up after crash?

[IceFireSoul]

After a crash, that became an everyday reality - when I rotate the motors, either manually or for take off; there is a grinding sound in the motors. It disappears very soon after and is away until the phantom has stayed idle for some time - then grinding sound again.

Is it endangering the phantom?

 

[robinb]

one or all ?

any grinding sound is not good, do the motors turn by hand freely ?

sounds like some crud has got inside.

 

[Fplvert]

Don't fly with crud in motors. You'll crash again at some point, if you do!

 

[IceFireSoul]

Two or three; one the most. After idle for a few hours or less; as I wither turn them on electrically; or by hand (either way); there is grinding sound - only for a few turns. Then it goes away and yes, they rotate freely. Crazy! I left it with the official Bulgarian DJI dealer and they said to just fly.

How to clean them?

 

[Birds-iView]

If you can narrow it down to one motor, take it apart and clean. I had a magnet come loose on my first phantom. That was a pain but I fixed it.

 

[Fplvert]

Two or three; one the most. After idle for a few hours or less; as I wither turn them on electrically; or by hand (either way); there is grinding sound - only for a few turns. Then it goes away and yes, they rotate freely. Crazy! I left it with the official Bulgarian DJI dealer and they said to just fly.

How to clean them?

 

[louforgiveno]

Sounds to me like bearings starting to fail.....look into replacing those....2 bearings per motor fyi.

 

[IceFireSoul]

Is it expensive?

 

[tomtnt]

i bet it's magnetic sand

 

[louforgiveno]

Is it expensive?

They can be somewhat costly, the higher the quality the more the price will be.....if i remember right a set of ceramic bearings (8 total) "Boca Bearings" for the p2 were about $120....and a set of lower quality ones were about $40.