I agree that a "130 OLD" crank with a "135 OLD" hub usually ends with a chainline that is less than optimal.
I also agree that it isn't a show-stopper, just something to be aware of. It's also something that can usually be mitigated with bottom bracket spacers or just a different bottom bracket. Most current disc road and cyclocross frames come with this mismatch from the factory; chain rub comes free. I think they just decided that the narrower 10 and 11 speed chains mitigate the chainline difference, and just called it good enough. Specialized tried to address this with its proprietary (of course!) SCS system. http://southernwheelworks.com/2016/10/17/specialized-scs-wheels-issues-solutions/ It was technically correct, but was roundly criticized because it created a special hub standard that inhibited wheel swaps. But we aspire to "just right" for our "just ride", so I brought it up. On Wed, Nov 15, 2017 at 5:16 AM, Garth <garth...@gmail.com> wrote: > I don't own or use any modern Campy stuff, but I don't see why the Athena > crank won't work. So it's "spec'd" for a 130mm rear , okay, so what ? That > spec makes sense from Campy because their Athena hub is 130mm, it doesn't > mean it is a limitation. I run a road double crank(42.5mm chainline) with a > 135mm hub and if anything, I like the the slight difference in center > chainline over the cogs. All that matters is that you are able to shift > across the cassette and accurately. So you get some chain rub in say the > big ring big cog or 2 combo, so what, those are severe angles anyways which > I never use. Same with small/small combos. Basically my message is try it > and have fun ! > > Another example of exact chainline mythology is the XD crank, which is > "spec'd" for a 45mm or 47.5mm chainline, depending on where and when you > read it, I've seen both. A 113mm bb is "spec'd" for the XD triple, yet > everyone knows it works just fine with a 107mm if your frame allows it, and > some even use a 115mm. So it works with chainlines from 45 to 47.5mm plus. > The differences in shifting being which cogs and be run in what rings. So > there ya' go . > > -- > 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 https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
