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Ultegra cassette(4 posts)

Ultegra cassetteBonty
Mar 22, 2003 8:05 PM
I just installed a new 9 speed Ultegra cassette (11-23) on a 105 hub (switching from 8 speed 105 to 9 speed Ultegra) and there is a small amount of side to side play in the sprockets. Is this normal, or should they be very tight against each other? I just used the spacers that came in the box with the cassette and I kept them in the same order. It seems to shift well, but I just wondered if I installed it correctly.
Check the smallest cog ...IFRider
Mar 23, 2003 9:35 AM
I had a similiar issue and it was the I did not line up the smallest cog correctly. I was able to tighten down the lock ring pretty hard and had a little play. Only difference was the shifting on mine was a little off.
Check freehub body....DaveLobster
Mar 24, 2003 6:37 AM
While 8-speed Shimano is for the most part compatible with 9-speed, there are some exceptions. One is that most road 8-speed freehubs are not compatible with cassettes using an 11-tooth sprocket. The trick is that on the newer freehubs the splines don't go all the way out to the end. See:

Not exactly sure about your hub, as 105 8-speed spanned several years, but I have an 8-speed 600 (Ultegra) hub from 97 (the last year of 8-speed 600) which is not 11-tooth compatible. You have two choices, short of a new hub/wheel: swap out with a newer freehub body or just get a cassette with a 12 tooth top gear.
You were right.....Bonty
Apr 3, 2003 6:52 PM
You were right, that was the problem. I decided to go ahead and upgrade my wheelset with new ultegra hubs with open pros, since that was my original plan anyway, I was planning to wait but this gave me an excuse to go ahead and buy new wheels. Thanks