Zack, I chased a bottom bracket click for months on my MB3 commuter. I took it to the LBS and they pulled the bottom bracket, pronounced the bearings good, snugged it up, and I went off without a click. Three weeks later my click was back. I went back to the shop and we repeated the process. The shop owner is first rate and checked everything. For a second time he pulled the cable routing bracket on the bottom of the shell to make sure there was no interference with the set screw, checked the bearings, and reassembled. No clicking for about two weeks, then back it came, most pronounced when I was climbing. During this long process I was occasionally pulling my crank and playing with chain ring size and chain line - not actually doing anything to the BB, other than maybe torquing it a bit as I tightened the crank bolt. I went back to the LBS. The owner repeated our now normal process - but asked that I not do anything with the cranks for a bit. To shorten the story - as long as I didn't take off or tighten the crank the clicking stayed away. Our final thoughts are that when I would take off the crank and put it back on I would very slightly loosen the BB (or BBBA) and it would loosen with use. The initial loosening of the BB was subtle with no observable change, but when the clicking started the BB would be loose enough to ever so slightly tighten. It was "the curious case of the clicking BB", and I am glad it is solved.
Good luck, Bob On Fri, Sep 14, 2012 at 6:09 PM, Michael Hechmer <mhech...@gmail.com> wrote: > It's hard to imagine what you could do to contaminate a sealed BB. It's > easier to imagine being the outlier on the tail end of the quality > distribution curve. The good thing about higher end, eg White or Phil > Wood, they would make good on these. > > Michael > > > On Friday, September 14, 2012 5:49:55 PM UTC-4, Zack wrote: >> >> Ok this is plain weird. >> >> My wife came home and said "something is wrong with my bike" >> >> I just checked and the exact same thing is happening on her betty as on >> my sam. >> >> So the constant here is me, as I took both cranks off our bikes to swap >> chain rings. I put the cranks back on and greased the bolt before putting >> back on. I tightened both snug with some force but didn't go crazy >> tightening up. They are both tange bottom brackets with sugino XD2 cranks. >> >> >> I have to imagine I have done something to cause this, but have no idea >> what. >> >> further ideas? >> > -- > You received this message because you are subscribed to the Google Groups > "RBW Owners Bunch" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/rbw-owners-bunch/-/Y7cHyyuZkwEJ. > > To post to this group, send email to rbw-owners-bunch@googlegroups.com. > To unsubscribe from this group, send email to > rbw-owners-bunch+unsubscr...@googlegroups.com. > For more options, visit this group at > http://groups.google.com/group/rbw-owners-bunch?hl=en. > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bunch@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
