Bicycle Mechanics - An interesting new failure - derailer hanger failure mid ride
Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.
06-15-12, 03:16 AM
I got to walk home this morning - the derailer hanger threads must have worn out. Good thing the failure was close to home or things might have been bad. I think I need to add a derailer hanger to my spare parts in the saddle bag. The bike always finds a weak point somewhere.
The derailleur hanger threads? What happened? Did the derailleur just fall off the bike?
06-15-12, 04:10 AM
Must have worked loose. Then rattled around a while. Thinking about 7 and 8 have been jumpy on gravel or really uneven surfacesfor a week or so. So the thread wore out, I compensated with the barrel adjuster and today it just decided to fall off. Wasn't moving fast or it could have be very unpleasant. Got a new one that was 99% right and dremeled it to make it fit. Only needed a few mm here and there. Put the whole system back together, tightened everything as far as is safe and it rides nicely now. Still, given its a small and light part carrying an extra can't hurt.
06-15-12, 05:16 AM
A little thread locker like blue Loctite might be a wise precaution since the first one worked itself loose. Proper torque is also necessary; properly-torqued fasteners typically don't come loose. A spare hanger (and bolt) is always a nice item to have around, I always carry one. A pre-ride check might have revealed the loose hanger.
Powered by vBulletin® Version 4.1.12 Copyright © 2014 vBulletin Solutions, Inc. All rights reserved.