chain rubbing against small chainring, roadbike
05-21-16, 03:48 AM
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chain rubbing against large chainring when in small-small, roadbike
Hi Gang, I did a little searching on this issue but could only find info about the chain rubbing on the front derailer... my issue is a bit different. Hopefully someone has come across this!
The Bike: Cervelo S1, Ultergra 6600 groupset with FSA Gossamer crank
The Issue: If I switch into my smallest sprocket on the cassette, and smallest chainring, the chain rubs on the large chainring. As soon as I go to the next nargest sprocket the rubbing goes away. I should note that this only started after taking the chainrings off to do a thorough cleaning. In the past it hasn't been an issue taking them off and putting them back on, but perhaps I over-tightened them or something? Figure I should check in the mechanics on here before taking things apart in case it's a common issue.
Thanks in advance!
The Bike: Cervelo S1, Ultergra 6600 groupset with FSA Gossamer crank
The Issue: If I switch into my smallest sprocket on the cassette, and smallest chainring, the chain rubs on the large chainring. As soon as I go to the next nargest sprocket the rubbing goes away. I should note that this only started after taking the chainrings off to do a thorough cleaning. In the past it hasn't been an issue taking them off and putting them back on, but perhaps I over-tightened them or something? Figure I should check in the mechanics on here before taking things apart in case it's a common issue.
Thanks in advance!
05-21-16, 04:19 AM
#2
mechanically sound
Not unusual for a cross chained gear selection to rub a little. No need to do anything, just don't use that gear combination.
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05-21-16, 04:37 AM
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Maybe you just noticed it after doing that or the sound changed a little bit based on lubrication so that made you notice it. Mine starts to make noise in the large front and second largest rear...on the largest rear and large front, it rubs pretty good...always has...the noise does change a little depending on conditions like humidity, lubrication, etc.
05-21-16, 09:55 AM
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This is very typical and one of my road bikes it does this too. I have even seen this happen when on the second smallest rear cog for some bikes, product of short chain stays. Normally not a problem. I cross chain the big-big combo all the time but never use the small-small no need for this.
05-21-16, 10:22 AM
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Hi Gang, I did a little searching on this issue but could only find info about the chain rubbing on the front derailer... my issue is a bit different. Hopefully someone has come across this!
The Bike: Cervelo S1, Ultergra 6600 groupset with FSA Gossamer crank
The Issue: If I switch into my smallest sprocket on the cassette, and smallest chainring, the chain rubs on the large chainring. As soon as I go to the next nargest sprocket the rubbing goes away. I should note that this only started after taking the chainrings off to do a thorough cleaning. In the past it hasn't been an issue taking them off and putting them back on, but perhaps I over-tightened them or something? Figure I should check in the mechanics on here before taking things apart in case it's a common issue.
Thanks in advance!
The Bike: Cervelo S1, Ultergra 6600 groupset with FSA Gossamer crank
The Issue: If I switch into my smallest sprocket on the cassette, and smallest chainring, the chain rubs on the large chainring. As soon as I go to the next nargest sprocket the rubbing goes away. I should note that this only started after taking the chainrings off to do a thorough cleaning. In the past it hasn't been an issue taking them off and putting them back on, but perhaps I over-tightened them or something? Figure I should check in the mechanics on here before taking things apart in case it's a common issue.
Thanks in advance!
Also, it's kind of overkill to take chainrings off to clean them. A rag and a toothbrush is usually sufficient.
05-21-16, 08:13 PM
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05-21-16, 08:20 PM
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