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PostPosted: Tue Jun 04, 2013 6:05 pm 
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Joined: Fri Sep 05, 2008 1:15 am
Posts: 76
Maybe the shifter is moving on the bars? Same effect as wrong cable tension, but maybe harder to notice if the movement is very slight and only when you push/pull on it. Seems unlikely, but it happened to me once. Of course you'd also likely notice it in your braking.


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Posted: Tue Jun 04, 2013 6:05 pm 


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PostPosted: Wed Jun 05, 2013 2:25 pm 
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Location: Mountain View, California
Agreed on the comment about shifter moving on bars. Happened to me the 1st time I installed Sram Red (1st gen) onto my bike that I had Dura-Ace 7800 back in the day.

I never really had to put high amounts of torque to the clamp for the shifter with Dura-Ace. So I did the same with Sram, it would slip down as I rode on the hoods. Took me weeks to figure it out, and now I torque the sram red hoods to recommended torque (pretty high) and no more ghost shifts in the back and no more rubbing front derailleur.

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PostPosted: Thu Jun 06, 2013 6:53 am 
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One other thing I thought of is that there is an extra trim position on the small ring. The instructions for setting up limits and cable tension for the FD are not quite the same as old Shimano FDs. I would double check the dealer manual for the FD and shifters to be sure that you are setting it up correctly again. Though your mechanic may be awesome, the FD setup is a little different and maybe they didn't realize that.


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PostPosted: Sat Jun 08, 2013 2:27 am 
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Ive got 2 bikes in the shed running DA9000 mech. I pulled out a bit of hair before I worked out: THERE IS EXTRA TRIM IN THE SHIFT!

So there was only 2 trims in the past on shimano FD's. With DA9000 there is THREE!

So when you are in the easiest gear, front and back, and its rubbing, trim the shifter one more time.

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