I have set up a few front deraliuer in the past some using ultegra 6700, all of which ran without chain rub with the exception of the two expected cross chaining cogs.
For some reason on my new bike the available space in the front deraliuer seems limited when in the big ring in front.
The group set is Ultegra 6700. If I set the large ring in back and large ring in front not to rub on the FD, then the biggest 3 cogs in back will rub.
I know this is not normal. 2 cogs maybe but 3 seems too much. I have tried all combinations of cable tension and high limit screw in the FD.
I have noticed that there is slight lateral deviation of the large chainring about 2-3mm. I know there is suppose to to be about 1mm of chainring movement from side to side. I have removed the chain ring and tested with one from another bike which I know is straight. The issue remains, slight lateral wobble.
This leads me to believe it's the spider or the bb. Spider doesn't appear bent and bolts have always been tight. No lateral movement in crank arms which make me think it's not the bb.
Does any one have any advice or had a similar issue? Thanks in advance :)