This is a long shot, but I had a remotely similar problem once on a Maillard freewheel once and it was a loose cog within the freewheel. The cog wiggled around enough so that the chain wouldn't engage and skip. Mind you this was an inner cog from a crazy modification I did to the body (non standard). It was a rebuildable freewheel so it may not apply to you. Check that each cog is tight in the freewheel and make sure the freewheel is tight on the hub. For kicks I would also make sure there isn't a tight link in the chain, though you would see problems in other cogs but it wouldn't hurt to check.
Other than that I am at a loss as to why you get the skipping. Good luck with finding the solution. -- 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.
