I have been having problems with my 1/24 ES motors not having enough brakes.
Both motors run very well but they won't stop. Have used & checked controllers, tested other cars & it is not the controllers it is something in the motor. Gear them both 6/46 with .650 dia tires.

One motor is a .480 dia Koford arm in a 8 mag setup.
The other motor is a .500 Camen arm in a 10 mag setup.
Both motors use Cahoza springs (have tried heavier springs) & Koford BFII brushes.

Any thoughts, ideas or suggestions is appreciated.