Lockring keeps on coming off

sounds like fun, but must tell you im a fat bastad. the reason the lock ring is used is to keep the sprocket on.

FixAxioN i hope it wont come off again.
but if it does, i would need to change the hub right? Or can i turn the wheel the other way in? It looks like they are the same :O

i do quite a bit of skidding so defo need that ring in!

redrum - can u advise any good shop where to get one in london? I commute from Greenwich to the City.

Also one more thing i wanted to ask about: my backwheel is a bit buckled, when i was adjusting the chain tension last night, i noticed that if i pulled the chain too tight, the wheel would not spin a whole revolution because it touches the side of the frame... I also noticed a spoke which was loose and tried to tight it (by hands again!) but it seems the wheel is not 'true'. Any tips to fix that? :O

brick lane bikes for bits...jan and others are all good. but im biased because they mates, but there prices are similar to condor. as for the wheel, if the other side has two different size threads...one for sprocket and the other for lockring the its fine to flip the wheel.

truing a wheel....best try http://www.sheldonbrown.com/tooltips/truing.html or http://sheldonbrown.com/wheels/index.html give you an idea of what to do. basically for wheel truing if for example the wheel touches the frame on the left side of the bike then this means that you need to tighten the spokes on the right hand side. if its a long buckle the simply find where it starts and finishes and tighten everything on the opposite side.(although this is only for horizontal truing not lateral)

i hope this makes sense, best to check the links.