Modified version of the motor mount for the 1/10 RC chassis designed by Duke Doks. The original had these “nubs” which the motor bolted against, however I found that they did not allow for much of the motor shaft I was using (Tamiya Torque Tuned 540 Motor) to pass through the piece in order to hold the pinion gear that connected with the rest of the rear drive train.

By removing these pieces so the motor sits flush with the piece and now has greater hold of the gear, reducing the chance of slipping.