
The trick to getting the sprocket nut off is using a 27mm socket that is a simple hexagonal shape like those used for rattle guns, as opposed to the regular ones you get in a standard socket set. The standard ones just end up stripping the already rounded corners off the nut. Get a big bloody lever on your socket spanner and wait for the almighty crack as the nut unlocks

Now I just need to get those new tyres fitted
