Join Date: Feb 2005
Bikes: Trek 5500, Colnago C-50
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
How many cogs are in the back? Freewheel or freehub with cassette?
Assuming that your Cannondale has an aluminum frame, you should know that it is not recommended that you spread the rear triangle enough to accept a 9-speed hub. That's not to say that it can't be done.
8, 9, 10, &11-speed hubs have 130 mm dropout spacing. Measure the dropout spacing across your frame where the rear wheel fits.