Quickly running the numbers through a gear calculator, your 13t is giving you about a 68 g/i and your 11t about an 80 g/i .. that's a big spread.. I like to cruise in the mid to high 70's.. with your bike's 48 chainring, that would mean a 12t .. sounds like you like high cadence .. 24 mph with a 48/13 would be around 120 rpm .. not sure what tires you are running, but if stock, then something like a slick Kojak, Continental, Scorcher or the like might get you a little more speed.. I'm running Panaracer Minits on my go fast folder .. very fast tire.. I've also been running these super cheap Kenda Ksmart 406x1.35 (same size as the Kojak) tires and find them surprisingly fast ..
Last edited by BruceMetras; 10-17-13 at 08:52 PM.
Reason: Too much wine