" I am wondering if there is a way of checking to make sure if the hanger is aligned properly. I don't want to cause any extra wear if it's still slightly twisted. Any tips on how to check this or to align it properly?"
Eyeball it. Get your face behind the rear derailer and down low. Are both pulleys in-plane with the plane of the cog that the chain is on? Is the imaginary line connecting the two pulleys in-plane with that same cog? If yes, don't sweat it. If it looks way out of plane in any direction, let a good shop check it out. A good shop will have a tool like this: http://www.parktool.com/product/derailleur-hanger-alignment-gauge-dag-2-2 They will use that to make sure your derailer hanger is in-plane with the entire rear wheel. They'll use that same tool to bend it straight, if necessary. Very few home mechanics invest in this tool. Bill Lindsay El Cerrito, CA On Friday, February 19, 2016 at 2:40:15 PM UTC-8, Surlyprof wrote: > > Grant's incident was different than mine. I had noticed a clicking noise > recently, particulary during hard pedal strokes. Turned out that a link of > the chain was coming loose and when it broke open, it hooked the derailleur > and twisted it up nicely. Lesson learned... check the chain more often as > part of my regular maintenance routine. I'm just glad the derailleur > hanger wasn't twisted beyond my own repair capabilities. Had this been an > aluminum bike, I'm sure it would have cracked. If not when it happened, > surely when I tried to bend it back. I don't even want to think what would > have happened had it been carbon fiber. > > Everything seems to be running smoothly since the repair. I am wondering > if there is a way of checking to make sure if the hanger is aligned > properly. I don't want to cause any extra wear if it's still slightly > twisted. Any tips on how to check this or to align it properly? > > Thanks again everyone. > John > > On Friday, February 19, 2016 at 1:32:32 PM UTC-8, BenG wrote: >> >> I found Grant's incident interesting because I did the same thing - not >> enough chain for big-big combo, and it locked me up. My case was 54-34 >> combo on '72 Schwinn Sports Tourer, which I tried to hit after flying fast >> down a valley and up the other side, fogetting to drop to the 30 ring. In >> my case, though, that '72 Schwinn derailer (actually an early Shimano long >> cage) was up to the challenge, and just froze its idler. Or maybe I can't >> put down the torque like GP. Whatever, I learned to put an extra link in >> that one. > > -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
