How major is a rear derailleur change?
I took in my bit of a beater of a bike to the LBS to get something fixed and they said the front and back derailleurs and a couple of the cogs were coming to their natural life. Was a 95 quid job to fix it all up. Thoughts of a new bike aside is it a big job to change them yourself, have adjusted the front and rear gears and know one end of spanner from another, but want to know just how difficult it would be!
Not going for speed and pinpoint accuracy, just get me to work n' back.