I thought wind resistance was the main limiting factor with bike speed...
Main, but not sole. At 20kt IAS, aerodynamic drag accounts for about 80% of the power. If you can do 12mph into a 14mph wind, you need more power to do 14mph into a 12mph wind, because you have added 2mph extra rolling resistance and bearing friction, even though the aero drag is the same.
Main, but not sole. At 20kt IAS, aerodynamic drag accounts for about 80% of the power. If you can do 12mph into a 14mph wind, you need more power to do 14mph into a 12mph wind, because you have added 2mph extra rolling resistance and bearing friction, even though the aero drag is the same.