Hi All,

Today duing a test flight, (i didnt go out because of it) after a fresh set of blades, I am getting a high pitch whinning noise that seems to increase with RPM.

Every thing else seems fine.

What coudl it be ?

Thanks in advanced

Hard to advise you without hearing it, but if you've heard your propellers enough times you would probably know when something is up. You can check over your propellers and motors for some issues, sometimes even tightening up the screws on the propeller mounts attached to your motors can resolve strange sounds. If you find nothing and your still unsure it's better to contact DJI support rather than take chances.

Are you sure the new propellers are genuine?  Can you swap back to the original propellers to see if the noise goes away.

yes, they are the spares that come with the fly more kit,

I can not go back to the old ones as they are broken

Renames Posted at 8-7 04:28
yes, they are the spares that come with the fly more kit,

I can not go back to the old ones as they are broken

Daft question,  you put them on the right corners.

Renames Posted at 8-7 04:28
yes, they are the spares that come with the fly more kit,

I can not go back to the old ones as they are broken

Another thought,  when I broke a propeller one of the tabs that goes into the motor broke and left a little plastic in the motor that stopped the prop sitting flush like it should.  

DAFlys Posted at 8-7 04:42
Daft question,  you put them on the right corners.

What do you mean

Renames Posted at 8-7 04:28
yes, they are the spares that come with the fly more kit,

I can not go back to the old ones as they are broken

Maybe when you broke them you done some damage to your craft ?

Remove and reattach the props to make sure they are seated properly, and check the prop shafts for wrapped debris like hair or grass.

Hi, thank you for reaching out and we do apologize for the inconvenience. You may try to check if the screw is already tightened up well. Also, can you please provide us a short video showing the problem for us to further isolate the issue. Thank you for your kind and understanding. Cheers!

Broken original propellers indicate a crash of some kind, unless you have a pet that chewed them. If you have crashed it, you may have subjected one of the motors briefly to over current and or damaged one of the motor bearings. I would send it into an authorized dealer to get it checked out, much better than loosing your craft if you have a motor fail during flight.

No crash, props got warped due to silly me leaving them in the dash of car ( by them self)

If you can get airborne for about 5 minutes, you can check the prop tracking by hovering at eye level,
And looking at each prop, while in a hover and at a safe distance, say 5 feet away, and you will see how they are tracking.
They should be tracking in one single flat plane. Edge on view should be flat, without any "visible wobble" as best as I can explain it.
You should only see "one blade thickness" while it is spinning.
If one blade is tracking "higher" than the other, then this can cause a dynamic imbalance.

Question,,,,Daft question,  you put them on the right corners.

Answer,,,, What do you mean.

Maybe here's a clue

The props don’t have “right corners”

Granted this is my 1st set, but any prop can go on any corner of the aircraft that fits..
I’d black doesn’t fit in silver, silver don’t fit in black