It sounds as if the bearings have been contaminated. Since you say "Sam", I guess this is a Tange cartridge bb assembly? I've successfully cleaned cartridge bearings by prying the dust shields aside and flushing the bearings, either with WD-40 and the little straw, or simply by swishing them around (that's a specially-learned technique used for high-precision bits) in mineral spirits.
Otherwise, get yourself a new bb bearing assembly. Patrick Moore, pedantically calling the bb bearing assembly by its proper name in ABQ, NM. On Fri, Sep 14, 2012 at 1:50 PM, Zack <zack...@gmail.com> wrote: > My sam has developed a weird thing. > > There is like a grinding sound at the same point of every revolution of > the crank arm. I removed the chain and confirmed that the grinding sound > still happens, so it appears to be related to the bottom bracket. > > Any ideas on what this is? > > Bottom Bracket is not too old, definitely way less than 10,000 miles. > > It is not the pedals either, happens if i hold the crank itself and move > it through rotation. > > > -- > 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/-/7M_Bcm4GnXoJ. > 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. > -- "Believe nothing until it has been officially denied." -- Claude Cockburn ------------------------- Patrick Moore, Albuquerque, NM, USA For professional resumes, contact Patrick Moore, ACRW http://resumespecialties.com/index.html ------------------------- -- 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.
