They slip suddenly and slip a great distance all at once? That would be very unusual and in my opinion could be a faulty ratcheting mechanism that may warrant replacing that shifter.
If the shifter creeps gradually and then shifts you one cog, that's the more normal symptom with a more standard fix. The fix for that has little to do with the plastic compression washer and more to do with the metal washer that goes on first. The common issue is that the shifter assembly is bottoming out on the threaded post part. If this is your issue, then when you reef down on the d-ring, all you are doing is squeezing the post, because the whole assembly is bottomed out. The solution is to use a slightly thicker metal washer, or to add a very thin metal washer on top of that metal washer, so the assembly is no longer bottomed out. Then snugging up the d-ring actually does something. The original suntours came with two thicknesses of washers, presumably because different downtube posts had different lengths. On Monday, April 23, 2012 10:27:09 AM UTC-7, Lynne Fitz wrote: > > I have the Silver shifters (bar end) on my bike. They, not to put to > fine a point on it - slip. All of a sudden I'll be on the smallest > cog, usually when I don't want to be there. I did just replace the > washers, and reefed them down tightly. They still slip. It is very > strange - they'll slip, then they'll stay where I put them for a good > long while, then they'll slip again. If I pull the rear shifter all > the way up (largest cog), it will usually re-engage. For awhile, > anyway. > > I am wondering if it really is the shifters, or some other part in the > system (cable, rear der). The bike is going in to the shop, but if > there is any wisdom out there, I'd very much like to hear it. > > Thanks much! -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/npJEY0trXkwJ. To post to this group, send email to rbw-owners-bunch@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.
