joebaby i bet that car of urs the tourning one goes like stink and ur right when u go fast and hit a bump with a touring car ur car will fly . found that out with my thunder tiger ts-4n when i got a 2 speed gear box for it first time out with it in and fulll speed hit a drain cover and the car flewand when it landed the engine got ripped out .and chassis got bent but thats my fault for having the suspension to hard