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9/10 speed campy(5 posts)

9/10 speed campybjarne
May 22, 2003 12:54 AM
Has anyone tried to use a 10-speed rear derailleur (record), with 9-speed shifters?(record).
How did it work?
re: 9/10 speed campyeddie m
May 22, 2003 4:20 AM
The 10s derailer has the same geometry as the 2001 and newer 9s. You may need to replace the pulleys with 9s pulleys to use a 9s chain, but it will work perfectly. You can upgrade to 10s by replacing the chain, cassette and the cam in the right lever, which is a fairly easy job. The pre- 2001 9s levers will not work with the 10s derailer, unless you replace the cam in the lever.
the official view...C-40
May 22, 2003 4:25 AM
From Q&A:

Does the 10s rear derailleur work in the 9s drivetrain?

No, it does not because of the slightly different geometry of the parallelogram.

Does the 9s rear derailleur work with the 10s drivetrain?

Absolutely not. There are major problems with lateral clearance and excursion, and with the geometry of the parallelogram.
Both previous posts are correct...satanas
May 22, 2003 10:47 AM
...for the full story go to, download the file spares03_A.pdf and look at the chart on page 38. All will be revealed...
re: 9/10 speed campyRob Sal
May 27, 2003 11:12 AM
Last year the Campag website stated in the Q+A section that the 9 could be converted to 10 speed (and vice versa) by changing the jockey wheels and the bolts that hold them in place (plus the ratchet chain etc)

Now they claim 'Absolutely not' etc