On Tuesday, November 14, 2017 at 5:37:31 PM UTC-7, Belopsky wrote: > > From what Grant's written about the coming bike.. "• 120 rear spacing, new > rear dropouts---track style...two eyes for rak & fendr. No der tab. Angle > like Quickbeam's, long, too." it may work > > > Judging by the number of posts you're making in this thread, I'm wagering you're going to get one of these! Hope so. And, if you do, you definitely need to get one of those 120 OLD mini-cassette hubs, and try out the 6 speed, wide-range gearing. You have me obsessing about it now, but I want someone else to be the guinea pig. I still kind of think it works, though...
I just played around with my Quickbeam a bit, to see what would really be feasible. The chainstay length can be anywhere from a wee bit less than 17" to a wee bit more than 18" but, because of difficulty installing or removing the chain with rear facing dropouts, the minimum length might kind of unusable. Tire clearance is compromised at the shorter length, too. Who knows what the Blue Lug bike will be, but I can't imagine it being too different, and the principle is still the same. My earlier off-the cuff guess about gear range was a bit optimistic, but here is one that looks like a reasonable scenario, while keeping the effective chainstay length (number in parenthesis) between 18" and 17". This would use a 50 link chain with no half-link: 44:12 (17.82") 44:18 (17.13") 38:18 (17.93") 38:24 (17.22") 32:24 (18.00") 32:30 (17.26") Still a pretty good range, better for on-road than off, so I personally might look for a lower overall range. Just had to get this out of my head for now. Here's a tool that lets you calculate chainstay length for different gear combinations, in case anyone else wants to play around with it: http://eehouse.org/fixin/index.php -- 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.
