First, check chainline. Doesn't the Gus have typical long Rivendell stays? This should structurally minimize the chance of such chain rub, so perhaps your spindle is too short for proper chainline. Does Riv spec a spindle length for that frame and a 1X11?
OTOH, if the chainline is correct but you still need to add another couple of mm to the drive side spindle for the chain to clear the tire, perhaps adding a 1 or 2 mm spacer behind the DS cup will fix things, chainline be damned. IMO chain clearance is more important than a perfect line. To paraphrase what Grant said years and years ago when someone fretted that slighly imperfect chainline might accelerate chain and sprocket wear, "If you are riding enough to replace chains and cogs more frequently than you think you should, then you are lucky to be riding so much." And modern chains do tolerate a lot of deflection without greatly affecting performance or wear. On Sat, Jul 6, 2024 at 8:12 PM Steve <stevedfo...@gmail.com> wrote: > David, would a wider bottom bracket axle solve the issue? How long is the > current one? > > > > On Saturday, July 6, 2024 at 5:40:45 PM UTC-4 David Ross wrote: > >> I built up a Gus recently. I used a 1x11 Deore derailleur and the chain >> rubs the tire in the largest cog. The chain above the chain stay clears the >> tire, but below the chain stay the chain rubs the tire. Is my problem 1x11 >> cassettes with 135 spacing? I'm only running 2.25 tires and the Gus is >> rated up to 2.6. Any help would be much appreciated. > > - -- 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/CALuTfgvaybQC2hmhjyEihLbqapf7SOU1_zWht6KLKetL8OZCgw%40mail.gmail.com.
