The only problems I have every had with chains coming off on a SS or fixed gear bicycle happened when using a multi-speed cog. In retrospect, I should have realized that multi-speed cogs are *designed* to derail. SS/fixed cogs have taller teeth that lack ramps, all of which helps keep the chain in place.
Use a fixed/singlespeed cog, properly tension the chain (not as much of a problem with SS), and you’ll be fine. --Eric N campyonly...@me.com www.CampyOnly.com Campyonlyguy.blogspot.com @Campyonlyguy > On Feb 22, 2017, at 3:28 PM, Ian A <attew...@gmail.com> wrote: > > On a single speed, would a 4mm offset cause a greater tendancy to derail? On > my my SS set up (vertical drop outs) I used a cassette hub and adjusted the > spacers on the hub until the chain didn't want to derail itself. It is a > multispeed chain and there's a Surly tensioner, but even with the tensioner, > a few mm made a big difference in whether the chain stayed seated. > > IanA/Canada > > -- > 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.
