My easiest gear on my Roubaix is 36/27, or 35 gear inches. That is considered pretty wussy by a lot of my friends. I don't use the 27 much..mostly for stopping and starting in traffic on hills as I really suck at getting going in a "hard" (for me) gear.
That is roughly equivalent to a 34/25 gear (my 36 compact is less common these days).
Don't worry a lot about the double, unless you want to make a more expensive switch to a compact crankset. You could try changing up the rear cluster to a SRAM 12-28 or 12-26 or Shimano 12-27 if your biggest cog is a 25. Those are much cheaper (max $100) options.



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