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.adamlaw
06-14-06, 07:07 PM
I am helping my son try to adjust the front derailler of his "new" used bike. Gearing:Shimano Ultegra 9, crankset 53/39, rear cassette 27/12. When on the large front to small rear the lateral side of the derailler cage rattles the outer part of the chain. When I adjust the outer derailer screw by undoing it any further the chain falls off laterrally when I try to shift from front small to front large (something I do when not on the small rear cog). I have read about trimming and can't seem to get it to work. Is there some other adjustment I can make to stop this irritating rattling? Is this an intrinsic problem with this set up - this seems counterproductive to me.
Thanks
Thanks