06-01-2011, 12:08 AM
To be honest, I don't know which category this belongs in. Probably wheels and hubs, now that I think about it. Anyway, my girlfriend was complaining of sloppy shifting on her bike, so since she skipped the country for a few days (without me, I might add...), I figured I'd take a look at it for her. Right off the bat I found that the derailleur hanger was loose, so I tightened that up. Then I noticed that there was a ton of grease on the inside of the rear drive side dropout that looked like it had some kind of fabric threads in it. When I started wiping it up I discovered that the threads are metal shavings, and I'm not sure where they're coming from. I suspect they're either from stripped threads in the nut that holds the derailleur hanger to the frame, or from the fretting that had to have been happening from shifting with a loose hanger, but I have a feeling there might be something messed up in the freehub body because of all the grease on the dropout. There's a little bit of grease on the end of the freehub, too. Has anyone ever run into anything like this?