I have been working on repairing my mountain bike as it was stolen but later found. Except for my crankset, I'm finished. I found that the original chainrings were bent severely enough that the chain would not ride in any one gear smoothly, so I bought a new one. It's definitely not an expensive bike, so I bought a cheaper Shimano Acera X set. My problem is that the backset of it is different from the original (it sticks out further when mounted) and my derailleur cannot reach top gear. I thought about flipping the axle so that the crank mounted on the short end instead of the long one, but have not done so yet. Can I do this, or do I nead to buy a new axle?
Thanks for any help you can give me.