I'm replacing the rear wheel on my 7speed '93 Raleigh road bike commuter and I think I'd like to go with a 9sp. My downtube shifters are in friction mode and the rear 105 derailer is newer and can do 9sp. Questions:
1. I have another 9sp road bike and I tried to fit its rear wheel on the Raleigh aluminum frame. It looks like I just need to expand the frame 1/8 of an inch or less. Can I do that with an aluminum frame?
2. From a 7sp to a 9sp, do I need to replace the chain rings so the new 9sp chain does not get stuck in the middle of the chain ring?
3. Is there anything I need to consider?
Thanks in advance.