Tried taken the chain of. now I can't put it back on!!
I don't know why I tried taken the chain off i should have just cleaned it on the bike. I don't know the first thing about bike repair. In my stupidity i thought if i take the cogs off the rear derailleur and took the screw out of the front derailleur the chain would come off. What i ended up with is a twisted up chain. I also so not know which cog goes where on the rear derailleur one has a bearing in the other does not, which one goes where? I'm guessing i need a tool for opening the chain. Can i get one in Halfords?