I wrote:
>>Pre-1997 (pre 9-speed) Dura-Ace stuff is generally undesirable due to compatibility issues. I have
>>an article explaining the details (and some workarounds) at
http://sheldonbrown.com/dura-ace.
>
Mike DeMicco wrote:
>
> I read your page - what incompatibility issues?
Perhaps you should re-read that page more carefully, that's what it's about.
> The new rear Dura-Ace derailleurs have a cable position that is compatible with the older Dura-
> Ace shifters.
Yes, I explain that in some detail on the page referred to.
> The other issues are common to any older components (i.e., compatibility with new components).
> It's called planned obsolescence.
Actually, that's a bum rap. 1984 Dura-Ace STI was a first attempt. As time went on, Shimano found a
number of ways to improve on the design, starting with 600EX in 1985.
Shimano went to a _lot_ of trouble to try to find ways to maintain intercompatibility with the
original 1984 parts while incorporating improvements they developed later on.
Sheldon "Improvements Aren't The Same As 'Planned Obsolescence'" Brown +------------------------------------------------------------
+
| "Shimano's policy was that ten percent of their work | force must be graduate engineers...By the
| mid-1970's, | Shimano probably had more people working on research and | development than all of
| their competitors combined... | the (1985) SIS Dura-Ace was the first computer-optimized | rear
| derailleur...In 1985, Shimano had about 40 percent of the U.S. market...By 1994, Shimano had more
| than 90 | percent of the U.S. market." | --Frank Berto: "The Dancing Chain" |
+------------------------------------------------------------+ Harris Cyclery, West Newton,
Massachusetts Phone 617-244-9772 FAX 617-244-1041
http://harriscyclery.com Hard-to-find parts
shipped Worldwide
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