|8 Speed dura ace cassette question||dan 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 question||Jekyll|
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