Kevin It could work. Take a look at that smallest cog. See how it has that serrated pattern? That allows the lockring to stay in place without having to tighten it super tight. Now look at the second cog. Is it also serrated in the same way? Many Shimano cogsets have both the top and second cog serrated in this way. If yours is, I would call that a good sign.
Now, how many teeth is that smallest cog that you are removing? Is it a 12? or an 11? An 11-tooth cog has a special smaller 11-tooth lockring. Everything else uses a standard lockring. So if you are removing a 12, you've got the right lockring for the next cog. If you are removing an 11, you probably want to also set aside the small lockring and use a standard one. Use your judgment there, deciding if you have good coverage. Finally, you are right that the shifters don't really know that there aren't 10 cogs there, but there will be an extra click somewhere. The natural guess is to hide the extra click behind the biggest cog. You can't get there because the limit screw of the derailer stops you from getting there. Try that first. If it seems funky, you might want to also try having the extra click on the small cog side. That extra click would put slack in the cable as you are trying to shift to the smallest cog that isn't there, but it also means you are using the "right" 10 positions. I would definitely try it out before electing to rebuild a wheelset. best Bill Lindsay El Cerrito, CA On Thursday, November 26, 2015 at 9:38:41 AM UTC-8, Kevin Lindsey wrote: > > I'm building a Sam for my wife and bought a complete Shimano 105 11-speed > STI group for it. Without thinking, I ordered a 650B wheel from Rivendell, > only to find that it's a ten-speed hub. Now, I know there are spacing > issues with STI shifters, but I'm wondering what would happen if I simply > removed the biggest gear from the 11-speed cluster and installed it on the > hub. Would the indexed shifting still work? The spacing between the gears > would remain the same and, in theory, I don't see how the transmission > would know the difference. However, I've built up enough bikes in my time > to know that nothing (well, almost nothing) is that simple. Before I have > the local bike shop build me an entirely new 650B 135mm 11-speed wheel > (which, by the way, apparently are only made now for disc brakes), I > thought I'd ping the group and see if anyone has any ideas. > Thanks in advance, > Kevin > -- 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 http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
