Originally Posted by
Salkin
Especially running outdoor, you will be surprised how much "dirt" is inside the motor, once you take it apart, especially the motors we use in 1/10 TC's that have very large venting holes in the can.
Also, the oiling of the bearings, if you do it while the motor is assembled, and you just want to apply a drop of oil in the front bearing, be sure you have cleaned it as much as you can, otherwise you will only get dirt in the bearing with the oil and that will significantly reduce the life of the bearing.
Going to take it apart tonight, but first we're going to measure off about 10 yards and grab a stop watch to measure how fast it goes now, and then after a good cleaning. I want to see how much of (if any) difference it can make.
It is in constant dirt, water, and in general mud. Sure something has gotten inside.