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.ch9862
08-28-12, 07:47 PM
Can't seem to get rid of chain rub.
I put Tiagra compact crankset and FD on my bike (I believe FC-4650 and FD-4600), and can't get rid of chain rub. It only happens in big ring and when some power is applied (not a lot - I'm no Jens Voigt). The rub appears only on top of the stroke, but regardless of which rear cog is engaged. To not to hear anything I have to spin very lightly in big ring - no way to climb any small bump without chain rub. Everything seems nicely lined up and quiet on the bike stand :).
I'm using SRAM 951 chain - I have 9 speed cassette. Could this be the issue - are 10-speed chains narrower on the outside?
Another question, not sure if related. I'm using 9-speed Ultegra brifters (6510?) - and the front one has 4 positions. Can the FD be adjusted so that 2 positions are over small and 2 over big ring? So far, I seem to get 3 over the small ring, the last click gets the chain to the big ring. When adjusting limit screws, the chain seems to fall off the big ring before I get 2 clicks over it.
Is it all just user error, or is there some incompatibility between the parts I'm using?
Thanks!
I put Tiagra compact crankset and FD on my bike (I believe FC-4650 and FD-4600), and can't get rid of chain rub. It only happens in big ring and when some power is applied (not a lot - I'm no Jens Voigt). The rub appears only on top of the stroke, but regardless of which rear cog is engaged. To not to hear anything I have to spin very lightly in big ring - no way to climb any small bump without chain rub. Everything seems nicely lined up and quiet on the bike stand :).
I'm using SRAM 951 chain - I have 9 speed cassette. Could this be the issue - are 10-speed chains narrower on the outside?
Another question, not sure if related. I'm using 9-speed Ultegra brifters (6510?) - and the front one has 4 positions. Can the FD be adjusted so that 2 positions are over small and 2 over big ring? So far, I seem to get 3 over the small ring, the last click gets the chain to the big ring. When adjusting limit screws, the chain seems to fall off the big ring before I get 2 clicks over it.
Is it all just user error, or is there some incompatibility between the parts I'm using?
Thanks!