I use Suntour barcons to pull an 8-speed Dura Ace rd across 10 cogs with an 11 speed chain; no problem at all.
To shift across the 10 cogs takes just a bit more than 90 degrees of lever movement; I'm confident they would shift 11 without problem. You have to learn the shifting technique: shift crisply and confidently (and get a "sense" of how far to move the lever for each cog jump) and the chain moves obediently and quietly. Shift hesitantly, weakly, shyly, and you get mis-shifts and rattle. Overshifts: no, at least not with my rd, cogs (more-or-less in-series Hyperglide, 13-25 10 sp): IME, HG cogs shift better in friction than straight-tooth cogs. IME, the Barcons work better than the first edition Silvers. They pull more cable for a given lever movement -- iow, less MA -- but I find shifting easier with them compared to the first gen Silvers. I have not used 2nd gen Silvers. On Sun, Nov 27, 2022 at 5:21 PM 'John Hawrylak' via RBW Owners Bunch < rbw-owners-bunch@googlegroups.com> wrote: > IF I use my 1975 Suntour Bar End Ratcheted shifters with a modern Shimano > RD (Deroe M531) and a Shimano 7 speed HG cassette, and modern Shimano > shifter cables/housings, WILL the RD shift each gear going from the > smallest cog to the largest cog, WITHOUT the need to ‘trim’ the RD after > each shift, especially when moving up in the large cogs???? > > Secondary question: If the SunTours would work without trimming, do they > enough pull for a 7 speed cassette??? > > I have been using 8 speed Shimano Ultegra bar ends (BS-64) with a HG-50 7 > speed cassette and like it, 1 click, 1 shift, no need to trim. Been > curious about going back to using the SunTours rachets if the modern RD > eliminates the need to “trim”. Would like to know if others have tried it > and what the results are with respect to trimming. > > Note, NOT looking for a debate on Index vs Friction. I think index is > better, but I have trouble burying those nice SunTour bar ends & maybe I > can use them if the RD eliminates trimming. YMMV and that’s great, > diversity is good. > > > > John Hawrylak > > Woodstown NJ > > -- > 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 view this discussion on the web visit > https://groups.google.com/d/msgid/rbw-owners-bunch/54804a74-49b4-458d-87f5-359194462c8fn%40googlegroups.com > <https://groups.google.com/d/msgid/rbw-owners-bunch/54804a74-49b4-458d-87f5-359194462c8fn%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- ----------------------------------------------------------------------- Patrick Moore Alburquerque, Nuevo Mexico, Etats Unis d'Amerique, Orbis Terrarum -- 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 view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/CALuTfgvBPrfF8DJ3Df4Y34v_3MJ3HBHcNEgX45by%2BrPSwj77sQ%40mail.gmail.com.
