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I recently built up a full carbon fiber frame with Shimano 105.
When I began tuning I noticed a grumbling sound while in the front large ring & the rear smallest...*This is not a grinding...but a grumble so to speak...the best I can compare is when you get to far over on the highway with your car & hit the rumble strips.
*Does not do it in small front...just in big front... *This is only on the stand right now...I have not had it on the road yet...so it might be transfer vibration through the Carbon frame....
I have built several bikes...so I know what I'm doing...however this stumps & bothers me..!
Any expeirence with this sort of issue....or what I can do about it...?
