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Добрый прапор Гугл нам поможет (+)

Entered by GDT on October 02, 2006 at 17:03:52:

В ответ на: не понял... отправлено Evgen on October 02, 2006 at 16:43:32:

Первые две ссылки. По-моему, исчерпывающе. Кассета не встанет, барабан не поменять...

Frequently Asked Questions For The New 7800 Series Dura-Ace от Шимано:

13. Can I use my current 9-speed cassettes on the new Dura-Ace wheels (WH-7800)?
No, due to the shallow serration associated with existing 9-speed components, all 9-speed cassettes will not fit on to the new aluminum free hub bodies.

Shimano Dura-Ace Compatibility от Шелдона "Смеши и получай" ;-) Брауна:

2004 Dura-Ace (10-speed) Freehubs were completely redsigned. The Freehub body is now attached to the axle, rather than to the shell. The purpose of this was to save weight and to have the pawls act at a larger radius.
Also in an effort to save weight, the 2004 Dura-Ace Freehub body is aluminum. Aluminum Freehub bodies from various other manufacturers have been a bit dodgy, because the material doesn't hold up well against the concentrated pressure of steel sprockets. For this model hub, Shimano raised the Freehub body splines to provide more secure engagement. As a result the 2004 Dura-Ace Freehub won't fit older cassetes.

The new 10-speed cassettes, however, work fine on all 8- or 9-speed Hyperglide Freehubs.

(и там дальше еще)


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