Originally Posted by Sandson

Hi. This is all new to me as I don't know much about RC cars but Google wasn't finding the issue I'm having. My son has a Whirlt RC 4wd car. One of the rear wheels is not spinning with the throttle. However, when manually spinning the wheels with my finger the other wheels don't freely spin that well and this one spins a lot. The axle going into a plastic piece and I'm thinking whatever that plastic piece connects to is stripped or it's a broken gear or something. I know zero about rc cars or what the parts are called so I'm hoping someone can guess which part needs replaced and I can Google how to replace it. I wish this would let me post a picture. Thanks so much for helping this noob dad.