I have a Powertap G3 and would like to learn how to use it to measure the aerodynamic effects of changing equipment and positions on the bike.

I currently use the PM in conjunction with a lactate meter to measure VT1 and VT2 power levels.

On long distance events (more than 12 hours), I keep my steady efforts below VT1 and keep my climbing below VT2 (essentially FTP level).

I also use it for intervals and for easy days to keep my output below VT1. The PM helps me apply the Polarized training principles.