Solution to RES-V3 Sound Breaking Up at High RPM

Hey guys, there are random cases of RES-V3 sound breaking up at high RPM.

Below are some remedies. Try the 1st one, if that doesn't solve it, please try the 2nd method, then the 3rd method if first 2 methods still don't fix it.

Method 1


Method 2 

- credit to Oliver Preston from The Miniature Construction Company


Method 3
- credit to Peter Norman
Grounding the outside of the motor can to the chassis frame