This link to Jan Heine's blog is informative. I would try this method before giving up on the crank. http://janheine.wordpress.com/2012/04/16/to-grease-or-not-to-grease/
As an aside, I had a Sugino GP come loose on me a couple of times. I torqued it down properly and it's been perfect ever since, but I have heard of people damaging the taper by running the crank loose - I don't know how likely that is. Red Locktite should only be used to forever seize metal threads. I can't think of a single application where red Locktite should be used on a bicycle. The blue stuff is great for things like fender and rack bolts - bolts that tend to vibrate loose. The blue Locktite is a good anti-seize/lubricate during installation product. Blue Locktite could be okay to use on the crank bolt threads, but the taper wouldn't need it, just light grease apparently. Ian A. On Sunday, May 25, 2014 1:44:05 PM UTC-6, Jim Bronson wrote: > > Well I was riding a 1000k brevet and about 75 miles into the 2nd day's > ride, I noticed that my left side crank had come loose. I tightened it > down but it was loose again in a mile. So I really torqued it down and > that lasted about five miles. So this pattern persisted, but it kept > getting worse until I could only ride a few hundred yards before the > crankarm was loose again. > > I finally abandoned my 1000k at the next town, Buffalo, TX, where I am > currently stranded. But I'm just trying to figure out where I went wrong. > > What is the required torque for spare taper spindle cranks? My friends > kept saying it just wasn't possible to get enough torque on the bolt using > a multi-tool, but I am pretty strong and I put as much tightening force > into it as I could. > > Would Locktite Red have helped? Tried to find some but no auto parts > stores in this town are open Sunday. > > The threads don't seem to be stripped, but is it possible the spindle is > cracked? > > Is my taper trashed now? > > Parts: Sugino XD600, BB-UN-55. > > Mileage completed: 321. > > Pic: there it sits. > -- 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. For more options, visit https://groups.google.com/d/optout.
