Michael, Only help I can offer is you may have the cable too tight. Through a lot of trial and error have found that the cable needs to be snug, but not really tight to handle index shifting properly. (At least on my Sam Hillborne and Surly LHT).
Also check that the rear derailleur adjustment knob isn't out too much. That just fine tunes the shifting. Had it too far out on my LHT recently and the shifting was doing similar things to what you describe. Sorry couldn't be of more help, as I've never been on a tandem. Eric Platt St. Paul, MN On Sat, Jul 13, 2013 at 3:42 PM, Steve Palincsar <palin...@his.com> wrote: > That "understanding" is just plain wrong if you're speaking of 9 speed. > The ONLY Shimano MTB derailleurs that are incompatible with road shifters > (I presume that's what you mean by "don't mesh") are the 10 speed DynaSys > MTB derailleurs, which have different cable pull requirements. Otherwise, > excepting 8 speed Dura Ace, since the dawn of the 8 speed era all Shimano > road and MTB rear derailleurs have the same cable pull and are mutually > compatible with road shifters. MTB front derailleurs, on the other hand, > have different cable pull and are incompatible with road shifters. > > ----- Original Message ----- > From: "Ron Mc" <bulldog...@gmail.com> > To: rbw-owners-bunch@googlegroups.com > Sent: Saturday, July 13, 2013 4:20:07 PM > Subject: [RBW] Re: Tuning up indexing, a little OT > > Its my understanding that the Shimano MT derailleurs and road derailleurs > don't mesh. That's especially true of the 9-speeds. The bike my daughter > just built, we used an Ultegra 9-speed RD, custom Miche cassette, and > Microshift 9-speed barcons. I had read several forums this was the way to > go. All that mattered was getting the cable tight in the smallest gear, and > it works perfectly. I'm sure Microshift also makes a 10 > > On Saturday, July 13, 2013 1:23:33 PM UTC-5, Michael Hechmer wrote: > > I stopped using indexed shifting about ten years ago, and reverted to > friction, which seemed to require less fussing, at least in the shimano > version. Now I have a tandem with shimano BE's, which was set up by a bike > shop. Perhaps one of you who works with this stuff regularly can offer some > guidance. > > > The rear shifting worked quite well but it took me 2 1/2 years to get the > front end shifting predictably (for those of you who have never ridden a > tandem, front end shifting is a very different animal). While fixing the > front end, which now works perfectly, I replaced the much too big Deore XT > RD with an Ultegra 6700 GS, and can't seem to get it to work quite right. > The limit screws are good, as is the B screw, and the cable tension feels > quite high. The indexed shifter lifts the chain fine from the outside all > the way up to the inside (28) cog; but when I start down it will hang up > between the 1 & 2 position, then jump two cogs on the next click; it then > hangs between 7 & 6, and jumps 2 cogs to 5. After that it is OK, except for > that indexing hesitation which I hate. The chain (wipperman 908) has just a > few hundred miles on it and the cassette (11-28 HG) is new. > > > Right now, I have reverted to friction which seems to be working fine, but > would like to get the dang index to behave! > > > Michael > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To post to this group, send email to rbw-owners-bunch@googlegroups.com. > Visit this group at http://groups.google.com/group/rbw-owners-bunch . > For more options, visit https://groups.google.com/groups/opt_out . > > > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to rbw-owners-bunch+unsubscr...@googlegroups.com. > To post to this group, send email to rbw-owners-bunch@googlegroups.com. > Visit this group at http://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/groups/opt_out. > > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/groups/opt_out.
