Tom: My experiences with chain suck have occurred when shifting between the middle & inner chainring. When it happens, the chain is mostly on the inner ring BUT some of it has gotten "sucked" between the middle ring & chainstay, resulting in paint removal at the least & much tugging & cursing at the worst. Jim has suggested specific conditions, and I concur with the technique issue. Mine almost always happen when faced with an unexpected need for granny over middle, such as rounding a corner & seeing an "oh crap" grade change, and just flopping the shift lever & hoping for the best. Wear, lubrication, maintenance, are also possible culprits but I'll lay most of my experiences to simply being clumsy. Covers a lot of other sins as well.
There was a recent thread discussing chain ring spacing that got me to looking at my set-up & there is visually more space between my middle & inner than middle & outer. I intend to pursue this question but getting around to actually measuring & figuring out some spacers, etc., is a project for "one of these days". The quick fix is a bottle of touch up paint. dougP On Thursday, March 7, 2013 6:32:14 PM UTC-8, Tom Goodmann wrote: > > So, my naive question this week is: why do so many frames bear the scars > of chain suck? I make no boasts about my own riding, none at all, in terms > of distance, longevity, or rigor. but I can't think of more than a couple > of times I've ever thrown a chain. What causes the chain suck? > Over-shifting? (missing a gear or two or three) Shifting hard on a climb? > Is this an issue that has gone away for those riding with indexed > shifting, and so more of an issue with friction-shifters? Really just > wondering. If this question is too dumb for words, you can reply off-line: > tgoodmann-at-gmail, etc. -- 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?hl=en-US. For more options, visit https://groups.google.com/groups/opt_out.
