Bicycle Mechanics - Dura Ace 7900 shifter failure

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yzfrr11
10-24-10, 06:12 PM
My rt. shifter failed today on a training ride. It will shift to a larger cog only, but will not upshift to a smaller cog. So, its stuck on the largest cog at this point. Anyone have this happen or hear of this problem?
cracker7213
10-24-10, 06:58 PM
I have not heard this. Is the cable old? I would bring it in to the LBS. They can take it apart for you. These are usually pretty bullet proof.
yzfrr11
10-24-10, 07:09 PM
I also have had great experience with Dura Ace stuff. The cable is brand new - the shifter is toast. It will be replaced under warenttee.
reptilezs
10-24-10, 07:34 PM
My rt. shifter failed today on a training ride. It will shift to a larger cog only, but will not upshift to a smaller cog. So, its stuck on the largest cog at this point. Anyone have this happen or hear of this problem?
i see this with older shifters in the 5-7+ year old range. nothing really helps, some screw driver handle taps or playing with the lever helps sometimes but they are dead for the most part.
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