Thanks for the follow-up. I'm an 8-speed setup tops, testing out 9-speed on a new build, so I've little experience with these chainrings myself. I never asked compatibility questions about these chainrings when I took over the inventory, but I'm guessing as they were made 15 years ago or so (someone with easy access to Readers could verify this). When did 10-speed cassettes/chain become the norm? Could be that these chainrings weren't really made with 10-speed in mind. I've heard some reports of them working ok, but real-world experience seems limited with these. Maybe variation from manufacturer in actual chain width? David Chicago
On Sunday, August 23, 2015 at 10:10:33 PM UTC-5, Benz, Sunnyvale, CA wrote: > > This is *not* a complaint. This is a follow-up from my previous post > regarding use of Willow chainrings with 10-speed drivetrains. > > I finally installed my 46T and 29T chainrings that I got from David on my > 10-speed bike. They replaced a 48/34 combo as I wanted lower gears. > > The 29T works fine with my Ultegra 10-speed chain. The 46T, despite > appearing to mesh fine on the workstand, "jumped" once I was on the road > and applied a bit of force on the cranks. The chain is fairly new and > measured (with a 15" metal ruler) to have minimal wear. Upon inspection, > the width of both 29T and 46T Willow chainrings are almost 2.3 mm, whereas > the originals are closer to 2.0 mm. The 29T work fine as perhaps their > teeth are taller; the 46T's teeth are shorter, although they are the same > height as the teeth from the original chainring it replaced. I'm guessing > the extra width of the teeth prevented the narrower links on chain from > seating consistently, and increased the propensity to "jump" under load. > This explanation isn't satisfying as 7 through 11-speed chains should all > have an internal width of 3/32". I did find that the Surly stainless > chainrings do not like 9-speed chains although they were fine with 8-speed > chains. > > I guess I'm stuck with expensive Sugino originals. > > > > > > On Saturday, August 22, 2015 at 7:45:20 AM UTC-7, David Banzer wrote: >> >> Bumping this up. Slowly lowering the discount until the end of the >> summer. So, 20% off Willow chainrings now at treetop.bigcartel.com. Will >> probably take 5% off per week or so. Use code WILLOW during checkout. If >> you forget to put in the discount code, just contact me and I'll take care >> of it. >> Thanks, >> David >> Chicago >> > -- 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/d/optout.
