Rebuild and Maintain a Brushless Motor
In this tutorial, BSRC will show you how to rebuild your brushless motor. This example will show it with a Traxxas motor off a Slash. All brands are pretty similar.
Steps
- Start by popping out the back plate. In this design, there are 4 screws to remove that hold the plate in. Be careful not to strip them out. If you do need to replace your bearing, make sure you get the Traxxas rebuild kit. Bearings that go on a brushless motor are very different from those that go on your axle carrier. If the two get mixed, your motor can explode.
- If you have a waterproof motor, there will be a rubber seal, take care that you do not damage that. A flathead will get underneath the back plate and get it loose to pull off. There will be a bearing in the rear of the back plate and you can see inside the motor.
- To remove the rotor, push the front of the shaft out of the rear. This is a very powerful magnet – be careful not to pinch your fingers and do not put the magnet near anything it could damage like a cell phone or credit card. On the rotor, there is a spacer and a couple small shims – do not lose these.
- Next, you can inspect the rest of the can. All that is left are the windings inside the motor and the front bearing. Use your finger to spin the bearing – if it feels gritty or loose, you will want to replace them. If you do need to replace – put heat to it and pop it out. Put the new bearings in the freezer and they should fit great in the heated can.Check the inside for rust or water damage inside the can of the motor.
- Now you are ready to put it back together. Grab your rotor and put the spacer and shims back on – be careful in this step. Once the rotor is through, take your end cap and put it over the end. Once again, take care of the rubber seal. Then put your 4 screws back in and you are all set!
- If you have any questions or comments, feel free to leave them below or at our RC Nightmare Forum and keep coming back!
