I'm usually averaging between 15-18mph. I'll have to see how I do trying the middle gears. I guess I just feel like the more power I put into pedaling, the faster I'll be going. I guess I have to get out of that mindset from all the years I spent as a kid riding a single speed.
And all these numbers you guys are spouting off... number of teeth on the gear? I just looked up my gears. 3 on the crank (that makes it a triple, right?) 30, 42, 52, and 8 out back - 12-26 according to the website.