Think of the bevel as your micro spacer, shifting the center of the tooth profile left. I think it is technically backwards, the pics on peter white's page show the text facing out. But the 9sp chain was wedging itself to a complete stop, one side against the large ring, the rollers on the teeth, not wedged between the rings, as in when w etry 9sp chaains on our old 7sp mtn stuff.
This is what makes the sugino 0X08ID so appealing, It gets old tweeking vintage parts to work right with new ones. It is engineered from the get go to take a wide range double, full range of lengths from 160-175 and I do not have to scour the glode looking for a decent price on quality chainrings. Rob On Aug 5, 4:10 am, Garth <garth...@gmail.com> wrote: > On Aug 4, 10:57 pm, rperks <perks....@gmail.com> wrote: > > > This may sound rediculous, but the middle ring may not be symetric, > > and may do better flipped. On my 50-30 Ritchey compact set up on my > > Roadeo I have the outer ring with the text/etching facing out, and the > > middle ring has the text facing in or left. 9sp chain with an IRD > > freewheel in the back. I initially had it with the text facing out > > for both and the chain would not even ride on the middle ring withouth > > grinding against the outer ring. Not a happy moment for a shiny new > > set of TA rings. kind of odd but it runs like a dream now. > > >http://www.flickr.com/photos/rperks1/4379837357/in/set-72157622875811... > > > Rob > > Thanks for the tip .... it doesn't sound odd to me at all. Whatever > works. My first thought was, what about shifting from the 24t ring? > Since there would be no beveled edge on the inside. Then I remembered > I still had a Specialized 36t ring from the 80's, and it had no > beveled edge at all, and it worked fine shifting from a 26t ring. So I > don't think the beveling adds anything. > > If I knew how to remove those ramps on the big ring without damaging > it I'd do that too. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
