Originally Posted by
donheff
It is the Roval. Maybe I better go Read Sheldon. I assumed I could leave the wheel intact and just replace the internals - which I was calling the hub. Does the "hub" include the outer portion that the spokes attach to? Can't. Just replace the internals?
What is the problem with the Roval's hub that you are wanting to fix? You should be able to replace the bearings in the hub if they are the problem. You'll need to find the specifics of how to remove the old bearings and what to replace them with, probably through Specialized.
Your old bike with 7 speed probably has 126mm spacing between the rear dropouts and the new wheels are probably 130mm. If it is a steel frame, it won't be a problem to widen the rear end, but might be with aluminum. Then there is the problem of the 7 speed cassette being narrower than the 8, 9 or 10 speed cassettes the hub is made to fit. There are spacers you can get to make up the difference. The difference between cassette cog spacing on 7 speed and 8 speed is very small and you could likely just use an 8 speed cassette and just not use the lowest or highest cog with your (I assume) 7 speed indexed shifter.