Re: [RBW] Re: Chainsuck: why? Usually described causes don't apply.
Interesting possibility. Since I have only 7 cogs on that freehub body, perhaps I should just ensure that all my spacers are 7 or 8 speed (I think many of them now are 9) and use one of the 8 speed chains I have. Or -- is the internal width of 8 and 9 speed chains the same? ... On Mon, Oct 15, 2012 at 8:48 AM, Jan Heine hein...@earthlink.net wrote: On Oct 15, 5:49 am, Michael Hechmer mhech...@gmail.com wrote: I have had chain suck when I mixed shimano or shimano standard rings on a sugino crank. A lot of inexpensive chainrings are made to somewhat loose tolerances. If your teeth are too thick, then the chain will stick once in a while. With 10- or 11-speed, the tolerances here are +/- 0.005 mm, and few of today's smaller makers can meet those demands. With Sugino moving the production of their less expensive cranks to China, I would not be surprised if their quality also had taken a further nosedive. Before we found a good supplier for the chainrings of our new Rene Herse cranks, we had to measure a lot of chainrings. (We even made a gauge so we didn't have to measure each tooth separately.) We were surprised by the variability that some makers had in their tooth thickness. Jan Heine Compass Bicycles Ltd. http://www.compasscycle.com Follow our blog at http://janheine.wordpress.com/ -- 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. -- Vote early, vote often, vote Rhinoceros! http://tinyurl.com/d7muj2t - Patrick Moore, Albuquerque, NM, USA For professional resumes, contact Patrick Moore, ACRW http://resumespecialties.com/index.html - -- 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.
Re: [RBW] Re: Chainsuck: why? Usually described causes don't apply.
Patrick Since you have an 8 speed chain, that seems an easy experiment. Perhaps compare widths of your 9 speed and 8 speed chains. Since you're not using a 9 speed cogset, it seems a 9 speed chain isn't necessary. dougP On Monday, October 15, 2012 7:54:40 AM UTC-7, Patrick Moore wrote: Interesting possibility. Since I have only 7 cogs on that freehub body, perhaps I should just ensure that all my spacers are 7 or 8 speed (I think many of them now are 9) and use one of the 8 speed chains I have. Or -- is the internal width of 8 and 9 speed chains the same? ... On Mon, Oct 15, 2012 at 8:48 AM, Jan Heine hei...@earthlink.netjavascript: wrote: On Oct 15, 5:49 am, Michael Hechmer mhech...@gmail.com wrote: I have had chain suck when I mixed shimano or shimano standard rings on a sugino crank. A lot of inexpensive chainrings are made to somewhat loose tolerances. If your teeth are too thick, then the chain will stick once in a while. With 10- or 11-speed, the tolerances here are +/- 0.005 mm, and few of today's smaller makers can meet those demands. With Sugino moving the production of their less expensive cranks to China, I would not be surprised if their quality also had taken a further nosedive. Before we found a good supplier for the chainrings of our new Rene Herse cranks, we had to measure a lot of chainrings. (We even made a gauge so we didn't have to measure each tooth separately.) We were surprised by the variability that some makers had in their tooth thickness. Jan Heine Compass Bicycles Ltd. http://www.compasscycle.com Follow our blog at http://janheine.wordpress.com/ -- 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-owne...@googlegroups.comjavascript:. To unsubscribe from this group, send email to rbw-owners-bun...@googlegroups.com javascript:. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en. -- Vote early, vote often, vote Rhinoceros! http://tinyurl.com/d7muj2t - Patrick Moore, Albuquerque, NM, USA For professional resumes, contact Patrick Moore, ACRW http://resumespecialties.com/index.html - -- You received this message because you are subscribed to the Google Groups RBW Owners Bunch group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/AbcrEwR0xikJ. 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.
RE: [RBW] Re: Chainsuck: why? Usually described causes don't apply.
Jan, Are you sure the tolerance is not +/- .05 mm, which is .002, rather than .005 mm? A tolerance of .0002 on tooth thickness would result in some very expensive chainrings, I would think. Marc From: rbw-owners-bunch@googlegroups.com [rbw-owners-bunch@googlegroups.com] on behalf of Jan Heine [hein...@earthlink.net] Sent: Monday, October 15, 2012 8:48 AM To: RBW Owners Bunch Subject: [RBW] Re: Chainsuck: why? Usually described causes don't apply. On Oct 15, 5:49 am, Michael Hechmer mhech...@gmail.com wrote: I have had chain suck when I mixed shimano or shimano standard rings on a sugino crank. A lot of inexpensive chainrings are made to somewhat loose tolerances. If your teeth are too thick, then the chain will stick once in a while. With 10- or 11-speed, the tolerances here are +/- 0.005 mm, and few of today's smaller makers can meet those demands. With Sugino moving the production of their less expensive cranks to China, I would not be surprised if their quality also had taken a further nosedive. Before we found a good supplier for the chainrings of our new Rene Herse cranks, we had to measure a lot of chainrings. (We even made a gauge so we didn't have to measure each tooth separately.) We were surprised by the variability that some makers had in their tooth thickness. Jan Heine Compass Bicycles Ltd. http://www.compasscycle.com Follow our blog at http://janheine.wordpress.com/ -- 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. -- 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.
