Thanks Guys
I will take a look this evening and see if any of these sugestions is the cuase.
The car starts fine and revs nicely when accelarating on controls etc. Front wheels respond etc and there is a noise of a free flowing wheel that spins to a stop when you pinch the fuel line but the car will not move so it must be one of the reasons you have listed I guess. completely new to this, only bought my son the Thunder Tiger and me a Kyosho Fazer on Saturday and then he let his cousin have a go which turned into a disaster.