Originally Posted by 666pack
it's important to keep in mind that as you drop teeth off the cog it'll be a bit harder to get up hills and make quick accelerations. going from sixteen teeth to fourteen might take a little getting used to.
fourteen is a pretty small cog, i'd maybe go with the fifteen but it's all your call.
absolute cog size is meaningless. 11 is a tiny cog but 26x11 is still a really low gearing. 42x14 is the same as 48x16 which isn't an unreasonable gear.