I bought a 695SR frame in Dec 2010. Love the bike, but one complaint I've had from the start is that it is impossible to properly adjust the shifting. I've had it looked at in 2 shops and neither could get the shifting perfect. It's functional, but not perfect.
Basically, I can have it shifting smoothly in either small or large chainrings, but not both. In other words, if I fine tune so that the rear der shifts smoothly in all gears when in the small chainring - if I then shift to the large ring up front, rear shifting gets poor (gears begin to make noise and even jump slightly). If I then re-adjust and get things shifting smooth while in the large chainring, when I shift back to the small ring, things go out of whack at the rear.
After discussions with my favourite wrench at LBS, I have decided that the cables for front and rear der are "interacting" somewhere . The only place that makes sense is inside the downtube - I strongly suspect that the "straws" (one for front der cable and one for rear der cable) that carry the cables internally through the downtube must be crossed or otherwise interacting abnormally. In fact, when I shift the front der into the large ring (ie introduce tension into the front der cable) I can feel the rear der cable increase in tension and then shifting performance decreases at the back.
I'm not sure how easy it will be to "re-route" the straws within the downtube. I actually have access to an xray machine and I'm going to try to take an xray of the downtube - if the cables are twisted over one another, I should be able to see it - steel cables should show up brightly on an xray - I'll see how that goes.
If they are crossed, I'm wondering if anyone has experience or suggestions for how I might re-route the internal cable routing straws - I'm concerned that once I pull the little straws into the downtube, I'll never get them back out - never mind getting them untangled.
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Thread: Cables crossed in 695?
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