Sorry to hear you are having this problem. I had heard that running the full 2.8" tire can cause this, but bummed to hear it with the 2.6, which I was hoping would let me avoid the issue (also planning on Teravail--Honchos?).
I can't really give specific advice, but I will be following this thread, as I plan to run a triple up front, 8 speed cassette. I guess we'll see, but would be nice if the prototypes could be tweaked to avoid this, if the bike is advertised for 2.8" tires. I do think with the modern 9-10-11 speed skinny and flexible chains, dead nuts chainline is not so much of an issue. Maybe I'll do 8 of 10 and leave some spacers on the high end--would get the flexy chain with that solution too. People do seem to worry about q factor, which will take a small hit with your various solutions. On Thursday, June 25, 2020 at 8:39:33 PM UTC-4, David Wadstrup wrote: > > Hello, > > I've been building my Susie over the past couple of days, and just > discovered I've got an issue with the chain rubbing the rear tire when I'm > in the lowest gear. It's a Shimano 2x12 drivetrain, and seeing as it's not > a square taper BB, and has more than 9 speeds, I'm out of my league. The > tire is a 2.6 Teravail. Does anyone have experience with this kind of > problem? > > The only real solution I can think of is to add a 2.5mm spacer to the BB's > drive side. The chain just ever so slightly touches the tire now, and so > I'm hoping that moving the chainrings out 2.5mm will be enough to solve the > problem. BUT.... > > A part of me wonders whether this is advisable. Will my shifting be > compromised due to altering the chainline of the crank? Will widening the > space between the BB's cups harm the BB due to lessening the thread > engagement? Will it harm the cranks for the same reason? Is this solution > more of a problem than the rubbing problem? > > What about other solutions? Does anyone have any advice? This is driving > me crazy, and I'd really love to hear any and all suggestions! > > Thank you! > -- 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/50a22012-8f0b-428b-bdee-192e981e62efo%40googlegroups.com.
