I think Michael meant to say you have to pull the cranks, and measure the spindle length. I have calipers if you want them. I don't know if spindle length matters. I was just thinking that if the spindle is too long, than the chain might be exiting the granny not in a straight line heading for the big cog, but is being bent sideways to the left, which could perhaps make it more reluctant to release from the chainring. A too short spindle could perhaps do the same thing, bending the chain to the right.
Take a photo from the rear with the chain on the granny and largest cog. Is the chainline straight? Take a photo of the clearance between the chainrings and the chainstay from above. Is it really tight, or is there lots of space? Just to re-iterate, I am flying by the seat of my pants here. Just trying to think out of the box. Gernot On Feb 16, 7:14 pm, MichaelH <mhech...@gmail.com> wrote: > You will need a caliper. Pull the pedals off and measure the length > of the spindle. It only matters if you are unhappy with the chain > line. You can check out Sheldon's web site for a good discussion of > this. > > Of course, the other possibility here is that the first law mechanics > has been violated. "Never try fix anything on a bad hair day." I > have violated this law many times and have always been caught and > punished for it. > > michael, > Westford Vt, where despite the promise of warmer weather it is -10 > this morning. > > On Feb 16, 5:35 am, Paul Yeoh <rawfoodcuis...@gmail.com> wrote: > > > > > James: Thanks for that info! > > > Gernot: How interesting.. I just checked my Riv invoice and it lists a > > 107mm Tange Super BB. Not that I know what that means, but it reads on > > Riv's site that all Riv bikes should use 113 mm except the Atlantis > > that uses 107 mm. > > Whether I really have a 107 or that's just what it says on the receipt > > - I don't know. How do I find out? And would it matter? > > > On Feb 16, 1:30 pm, Earl Grey <earlg...@gmail.com> wrote: > > > > I have the same size Hillborne (but earlier Taiwan version) with the > > > same crank (Sugino XD-2), same chain (SRAM 9 speed), older generation > > > but NOS low normal XT derailer (but different front derailer, though I > > > can't see how that would matter), and have no issues with chain suck > > > (okay, 2 or 3 instances in 1.5 yrs, probably with dirty chain). I also > > > run a 9 sp Shimano cassette on a 9 sp Shimano hub, versus Paul's 7 sp > > > Shimano freewheel on Phil hub, but can't see how that would matter. > > > > How about BB spindle length? It's a long shot, but if the spindle is > > > too long, I could see that contributing. > > > > Gernot > > > > On Feb 16, 7:19 am, doug peterson <dougpn...@cox.net> wrote: > > > > > Paul: > > > > > > Matt: Yes, perhaps I should try an 8spd chain. They have bigger spaces > > > > > than 9 spd don't they? > > > > > Check out the Harris / Sheldon website for general chain info but IIRC > > > > 9 speed is narrower. I always buy ones marked "6/7/8" speed for my 8 > > > > speed. I generally buy whatever is on sale for around $20 & get > > > > several. Here in SoCal using wax for lube I get a year out of a > > > > chain. It's about as chain friendly an environment as possible (dry, > > > > the whole place is paved over). > > > > > You mention chain suck when climbing; that's odd. Maybe climbing in > > > > the granny & middle of the cluster, with not much chain tension? Hit > > > > a bump or something? Just a thought. > > > > > If chains are that pricey, have Kip pick up a batch when he's here > > > > next time. That doesn't do you any good today but for future. If Kip > > > > & Gernot have no problems & you're the only 9 speed user, that could > > > > be a clue. > > > > > dougP > > > > > On Feb 15, 2:52 am, Paul Yeoh <rawfoodcuis...@gmail.com> wrote: > > > > > > Thanks for all your replies. > > > > > > Seth: Just checked, its not the rails. > > > > > > Patrick: Think I read on EcoVelo to use that paraffin/beeswax ratio. > > > > > It worked really well when the chain was still clean, chain ran more > > > > > silent than when new. > > > > > > Matt: Yes, perhaps I should try an 8spd chain. They have bigger spaces > > > > > than 9 spd don't they? I think Wipperman's are available here, but for > > > > > a hefty price (like 1500 thb - 48 USD). I have been a veg oil user > > > > > myself on my other bikes, it was great when I lived in wetter > > > > > Singapore. The Riv was the first bike to get chronic chain suck and so > > > > > I thought I'd try wax since the climate is dry and super dusty this > > > > > time of year in Thailand. -- 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-bunch@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.
