I remember you saying about the Fastrax ones. Probably get some road and off road while they are so cheap.
To be honest I just want to take it apart to learn more about it, might as well give it a refresh while I'm there
Right, just took the spur gear out and managed to re fit it without breaking it! Looks like it's slightly warped, so I will replace that with some fresh slipper plates and a pin too. Really chuffed with myself now