DA 9000 rear derailleur compatibility

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lannes
Posts: 418
Joined: Sat Nov 10, 2007 9:51 pm

by lannes

I was planning a gradual upgrade to 11 speed, can I use a DA 9000 rear derailleur with DA 7900 10speed shifters and 10 speed wheels. I understand the derailleur pull ratio has been matched to the DA 9000 shifters, but I don't think that would be much of a problem as the shifter type controls the pull ratio.

Just wanted to confirm before swapping out the rear derailleur, thanks for any advice.

thisisatest
Shop Owner
Posts: 1980
Joined: Sat Jun 13, 2009 4:02 am
Location: NoVA/DC

by thisisatest

The shifter type determines its pull ratio. The derailleur is intended for a particular pull ratio, and for the most part won't work without it.
9000 derailleurs and 7900 shifters will not work together.

by Weenie


mann2
Posts: 75
Joined: Sun Nov 04, 2012 11:36 am

by mann2

lannes wrote: I understand the derailleur pull ratio has been matched to the DA 9000 shifters, but I don't think that would be much of a problem as the shifter type controls the pull ratio.


I've seen people mix 9 and 10 speeds. But I think you're better off getting matching sets than experimenting. :D

Doolop
Posts: 576
Joined: Wed Jul 08, 2009 9:19 pm

by Doolop

mann2 wrote:
lannes wrote: I understand the derailleur pull ratio has been matched to the DA 9000 shifters, but I don't think that would be much of a problem as the shifter type controls the pull ratio.


I've seen people mix 9 and 10 speeds. But I think you're better off getting matching sets than experimenting. :D


Thats because 9 and 10 speed shifters share the same pull ratio, where as 11 speed shifters pull a different amount of cable. The anchor point of the RD is different as well leading to no compatibility.

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