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PostPosted: Wed Mar 06, 2013 12:35 am 
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Joined: Sat Nov 10, 2007 9:51 pm
Posts: 254
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.


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Posted: Wed Mar 06, 2013 12:35 am 


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PostPosted: Wed Mar 06, 2013 3:24 am 
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Joined: Sat Jun 13, 2009 4:02 am
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Location: NoVA/DC
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.


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PostPosted: Wed Mar 06, 2013 3:34 am 
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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

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PostPosted: Wed Mar 06, 2013 4:58 am 
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Joined: Wed Jul 08, 2009 9:19 pm
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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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