Originally Posted by frankp
THanks for your reply. Regarding staightening bent chain rings, I tried this with pliers and it improved a bit, but chain still came off, then I took chain ring off bike and hit with a big hammer and this straightened it some more - it now looks perfect to the eye but chain still comes off when sprinting in big ring. Do you have any other suggestions or am I right to just get a new chain ring? THanks
He said you can often straighten chainrings, he didn't say go grab some pliers or a big hammer and start whacking away and see what happens.... your mechanic at your LBS (if experienced) will have a little specialty slotted chainring straightening wrench that he can use to tweak the offending ring back to some semblance of straightness. It takes like 2 minutes.