On Mon, Nov 13, 2017 at 4:51 PM, Philip Williamson < philip.william...@gmail.com> wrote:
> Glad to hear you've got a hub on the way. > > Now moot points: > If you ever do need to run a fixed cog without a lockring, I recommend the > Rotafix method of installation and removal. It's worked for me for many > years, both offroad and on. I traded a wheel away, and the shop broke a > chainwhip trying to remove the rotafixed cog. The rotafix removal worked > fine. > This being the Rota Fix method (which I never heard of before)? https://www.youtube.com/watch?v=y16rJ0M4YLY If so, question: how does this get the cog on tighter than simply screwing it on finger tight, and then getting on the bike and honking up a steep hill? > In my experience, a BB lockring used as a jam nut does nothing to keep the > cog on the hub. Just the other day I learned that in order for a jam nut to > work, it needs to be wider than the nut being jammed (thin nut inside, fat > nut outside). > Now that is useful information, in that I rather suspected that a bb lockring didn't do anything for security, but I didn't realize that a fat lockring, even if RHT, *will* work. Can someone explain the physics or mechanics of why this is so? Please use bright pictures and short words! > Use high quality cogs (Dura Ace, EAI, Surly) and hubs, or you can strip > thread even with a lockring. > Yup! I did that powering through an intersection while jumping a red light with a stamped cog on a Normandy hub. Instant freewheel! But I haven't seen one of those $10 stamped cogs for 10+ years; perhaps they underwent mass extinction during the fixie craze? > > Philip > www.biketinker.com > > On M > -- 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.
