here is the situation – I have a quasi-vintage 7-speed bike that still has the original front and rear derailleur (Deore DX) in very good condition. I have recently took a wheel building class which, naturally, resulted in a nice new set of wheels that I would like to use on this bike. However, the freehub on the new rear hub is for a 8/9/10 cassette.
Now, I realize that I could buy a spacer and place a 7 speed cassette on that bad boy. My question is this – Could I put an 8 speed cassette on the new hub, avoiding needing a spacer, and then adjust the limit screws on the rear derailleur to accommodate the extra gear on the cassette? I’m currently using a set of dura ace 8-speed bar end index shifters at the moment, so that wouldn’t be a concern. I also believe a 7 speed and 8 speed drivetrain uses the same chain, too.
Thanks for any help!