With your updated report you've ruled out cable and housing friction, and in my opinion have eliminated re-routing the cable/housing as a possible solution. If it were friction related, you'd shift well in the 'pulling the cable directio' and poorly in the 'releasing the cable direction' over all 9 cogs. Since you have problems in BOTH directions on the bad cogs and it works in both directions on the good cogs, and since you can adjust any 2 or 3 cogs to be good, but that makes all the other ones bad, then this is absolutely a cable pull rate problem. Your derailleur is moving too far, or not far enough per click. That means you either have a combination of parts that don't work together, or you've attached the cable to the derailer incorrectly. If you run the cable on the wrong side of the anchor bolt, you change the effective shape of the linkage and the pull rates change. Some people creatively route the cable wrong to get a Shimano this to click correctly with a Campy that. On a Shimano Deore XT Low- normal rear derailer (both the current one without the adjusting barrel or the last one that had an adjusting barrel built in), the cable should be routed on the outside of the anchor bolt, on the near side closer to you when you face the derailer. This is the opposite side to what you are used to if you normally set up non-rapid-rise, non-low-normal rear derailers. The photo of the XT low normal rear derailer on the Riv-site has it routed correctly:
http://www.rivbike.com/products/show/shimano-xt-rear-der/17-117 Check that first. Take a picture of it, so we can see that it is right. On Nov 17, 10:50 am, Juhani <juhani.lait...@gmail.com> wrote: > Thanks for all the answers. > > Earl Grey: Yes, the shifters is 9-speed (or atleast it has “compatible > with 9-speed” text on it). I used Silver Shifters before, but I found > it really difficult to shift between the 4 largest cogs on 11-34 9- > speed cassette while riding uphill with some cable tension. That’s why > I wanted to go indexed. > > reynoldslugs: Did changing to Paul Thumbies solve the problem > completely? Is the shifting as fine as with your Bob Jackson now? > > Jim: I checked that the cable is routed and attached to the derailleur > correctly. The derailleur hanger looks just fine, but I don’t know how > to check it more than that. > > Kuma: If I adjust the cable so that the 3-4 largest cogs shift nicely, > the 3 smallest ones won’t - the derailleur jumps over the 2nd smallest > cog and the smallest and 3rd smallest make noise. > > If I adjust the derailleur so that the 3 smallest cogs shift nicely, > the largest ones won’t - the derailleur jumps over the 2nd largest cog > on the way down and on the largest cog the chain rides on the top of > the cog almost dropping down to the smaller cog. 3rd largest makes > noise as well or the chain rides on the top of it. > > Frederick, Steve: The dropouts are vertical. > > AJ: The washer is installed correctly I think (pointing straight > down). Would it shift all the 9 clicks, if it was installed wrong? > > I also loosened the cable and tightened it without the 4th hand tool, > played with different cable tensions and positions with the adjuster. > Nothing really helped. > > So basicly the problem is that on the largest cogs I’d need more slack > on the cable and on the smallest cogs I’d need more tension on the > cable. > > Any more ideas? > > Juhani -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
