RE: help: horrible grinding sound when reversing sc10 4x4
Your clicker is loose. Didn't you read the manual? This is a race truck, it was not meant to go in reverse. With a loose clicker, you will hear a zipper-ish sound under braking. That is because your front wheels are freewheeling and you are only braking with your rear wheels. This is also why ONLY your rear wheels spin in reverse.