OK guys, so I was riding in bristol and I thought something was wrong with my chain/ freewheel area.
so I went home and discovered that every time you move the cranks the chain gets tighter then when you turn it again it gets loose.
I was wondering what was going on, it looks like the freewheel is moving strangely round and is not staying still with the bottom bracket.
I didn't know whether it was my wheel alignment,freewheel,chain or bottom bracket. please help!
I have made a video to show what is happening
http://vimeo.com/24078114