on 5/7/10 8:57 AM, Mitch Browne at [email protected] wrote: > A little disheartening in that anyone not familiar with a standard Riv > build has to work through the unfamiliar "Frankenstein" setup.
Not with ya on that one. If they refer to that as a "Frankenstein setup", I'd research some other shops. Or, find out when the oldest, crankiest, most grizzled mechanic is on shift. > > Wally thinks the root of the problem may the BB or crank. BB is a > Tange 68x107 not new but looked ok.He will replace that next week. He > thinks the crank may have a little wobble from manufacture which could > be but I wouldn't know the difference. Chainring bolts are tight and > minor adjustments were made to limit screws and this morning the chain > didn't fall off on the way in but I was very cautious though I rarely > shift roughly. BB length recommendation was changed in 2007 - I don't know if there was a change in production spec's or they just got better results with the longer one - http://tinyurl.com/rbw-spindle-lengths I'd try a 112/113 For a crank to be wobbling enough (when tightened) to throw a chain both directions, you would be able to see it. > The main concern is on going chain suck. This frame may be prone to > that since when purchased used (2001 / 2002 model) it had bad chain > rash. That was repainted but I hemp twined it for the heck of it and > it saved the chain stay from bare metal damage this time around. > > I am willing to replace the crank if that's what it takes. I googled > "Atlantis chain suck" and found some folks had similar problems with > this crank that were cured with a different setup. > > Any thoughts to what might be an upgrade BB / Crankset that would work > with this bike? I'd definitely try shortening the chain before changing cranks. Just to confirm, when you are saying "chain suck", the chainrings are not letting go of the chain where they normally separate at around th 6 o'clock position. Instead, the teeth are holding the chain and bring it up where it's wedging between chainstay and chainring from below. Is that what you are getting? - J -- Jim Edgar [email protected] Cyclofiend Bicycle Photo Galleries - http://www.cyclofiend.com Current Classics - Cross Bikes Singlespeed - Working Bikes Workshops of the iBob's Send In Your Photos! - Here's how: http://www.cyclofiend.com/guidelines "My nighttime attitude is anyone can run you down and get away with it. That's why I don't even own a bike light or one of those godawful reflective suits. Because if you've put yourself in a position where someone has to see you in order for you to be safe...you've already blown it." -- Neal Stephenson, "Zodiac" -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
