I've never seen my average go up above 14 and change. The other day, rode from the train station to my folks, stopped off for a haircut. Didn't let it get below 17, was mainly around 22 mph or so which for me was hammering for the hour. Get back - 14.1. How fast are you guys going when you have a 16, 17, 18 mph averages? Keeping it around 28mph the whole time? Or does your computer cut off if you drop below a certain speed (I have two computers for three bikes, they always seem to add a few seconds when I get to 0)?