Hi Kevin, I had a similar occurrence with a drive side arm but my fix was as simple as cleaning off the spindle, re-greasing, and reinstalling and tightening a little tighter than before. This was a NOS ritchey made by Sugino. After the above steps my problem was solved although I did remove these cranks to save for another project anyway but the loosening didn’t occur again during that time. Without wishing to start a grease vs anti-seize debate I’ll just ask if you used ANYTHING to lightly lube the tapers? My understanding is that something (whatever’s your cup of tea) is better than nothing and helps with a nice tight fit just like with a greased bolt snugs up better.
Brian Cole Lawrenceville,NJ On Tuesday, October 24, 2017 at 5:38:39 AM UTC-4, Kevin Lindsey wrote: > Greetings. > I have a strange problem with the Sugino cranks and solicit thoughts from > this group. Specifically, the left (non-power side) crank arm keeps coming > loose. This has happened four times (three times on my commute home > yesterday) and both before and after a recent swap of the bottom bracket. I > tap the arm onto the spindle, screw the bolt in as tight as I can, and pedal > off, only to have the arm start loosening again. I don't have this problem > on any of my other bikes, and have put probably a thousand or so miles on > this one before the problems began. > Any ideas? > Thanks, > Kevin Lindsey > Alexandria, VA -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
