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8 Speed dura ace cassette question(6 posts)

8 Speed dura ace cassette questiondan ida
May 5, 2002 5:03 PM
I recently got a used wheel that is 8 speed dura ace. Will ultegra cassttes fit and be usable? Is the dura ace cassette only lighter?

If I use more current 9 speed 53-39 rings, do I use the 8 speed chain or ?????

re: 8 Speed dura ace cassette questionJekyll
May 5, 2002 5:20 PM
Shimano 8 and 9 freehub bodies are the same. You can use either a 9 or 8 speed cassette on your wheels.
The DA cassette is only lighter (bigger cogs are Ti). Ultegra is supposed to last longer (no Ti cogs). I can't say I've ever had serious problems with the wear I receive from DA cassettes.
Not all Dura Ace 8 speed work with 9 freehubs + cassettes.Dave Hickey
May 5, 2002 5:34 PM
The first generation 8 speed Dura Ace freehub bodies required the last cog to screw on. These are not compatible with the 9 speed freehubs or cassettes. If your hub has a lock ring to hold the cogs in place, then then it is compatible with 9 speed cassettes.
Not all Dura Ace 8 speed work with 9 freehubs + cassettes.curlybike
May 5, 2002 6:28 PM
THe 8-sp D/A and Ultegra HG cassette carriers that have the lock rings will not work properly with an 11 tooth top cog without using a spacer behind the biggest cog. The splines are not cut all the way through the 11 tooth cog and it bottoms on the end of the carrier. This means that a tite lock ring will still have loose cogs in the stack. If you use a spacer behind the stack, the der. adjustment will be wrong, this may be a problem if you are switching wheels from one rear to another and backagain.
May 6, 2002 7:51 AM
The required spacer is probably the same 1.1 mm one required when running a MTB cogset on a roadie freehub. It's the exact same problem as you describe. Actually you can put it all together and get it to mostly work, but since the cogset is floating around a bit the shifting is crappy and inconsistent.
true, forgot about the old ones.... (nm)Jekyll
May 6, 2002 7:47 AM