On Thursday, September 10, 2020 at 9:52:10 PM UTC-5 Patrick Moore wrote: > What do you recommend for a rear derailleur for the following preferences, > listed in order of importance: > > 1. Shifts nicely with Bar Cons (yes, the Suntour ones) over 10 properly > spaced 10-speed-specific cogs (using 11 speed chain, if that makes a > difference). The rings are 42/28, and I let the chain sag in the > small/smaller cogs because I don't use those combinations. > 2. Shifts nicely over a close-ratio cassette: 13-25 (....20-22-25). > 3. Is reasonably durable and reliable. > 4. Is silver of, if black, then not horribly ugly. > Shimano rear derailleurs are pretty good for use with BarCons, as they have a fairly high actuation ratio, meaning more derailleur movement for a given amount of cable pull. The only thing better would be a SunTour. Forget about Campy or SRAM. Modern derailleur philosophy is moving toward lower actuation ratios because of the need for more tolerance with indexing on very closely spaced cogs. My problem with using BarCons (or Riv Silver) on narrow cassettes is that the ratchet clicks act a bit like indexing clicks, but they're almost never in the right place so my hand-brain connection gets flustered and I spend a lot of time trying to get the derailleur centered on a cog. With a SunTour rear derailleur, it's almost exactly 2 clicks of a BarCon per cog on a Shimano/SRAM 10-speed road cassette.
I have a SunTour XC Pro MD on my Riv MTB. It has almost enough wrap to work with a 46-36-26 front and 11-28 rear (39 teeth). It shifts brilliantly with Shimano 9-speed bar ends and a Shimano-SRAM 8-speed cassette. It's a nice combination of polished silver and black, and is solidly built (and pretty heavy, as a result). There are shorter and longer cage versions floating around out there. Ted Durant Milwaukee, WI, USA -- 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/2eca613c-df0c-41a7-aecb-f370e5de6a19n%40googlegroups.com.
