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@marxist_vulcan
I have a set Shimano Hollowtech II cranks [FC-R700] with the standard 50/34 chainrings.....but they won't give me quite the gears i would like.....How would 49/36 work.....i use downtube shifters with a 9 speed cassette....in index mode.....The front mechs is a Shimano Ultegra and the rear mech is Shimano 105 both 9 speed versions.......If i change what would be better TA or Stronglight Zircal rings...or are jusr as good?.....Any advice would be appreciated.