Originally Posted by
rbrides
visually, my hanger appear very slightly bent. I am considering removing it and testing with a straight edge but then I wondered;
1. are hangers always manufactured perfectly straight?
2. is ANY amount of bend acceptable?
3. is it acceptable to attempt to straighten it with a hammer on an anvil?
You don't say if there is a problem with the shifting. If the bike shifts correctly through the gears there is no need to mess with the hanger. Otherwise, as others have said, you need the correct tool to align it.