Looking at the article and your posts am I interpreting this correctly that very generally speaking a 300 square cm reduction in frontal area translates to a 15 watts improvement? In the article it translates this to 7 minutes in an IM bike leg at 200W.
Basically this is 1/2 of a piece of 8.5x11 paper in reduction in frontal area.
If this is true it is not clear to me if we are talking at what speed. I assume it is the typical 30mph that is most common. I do realize a reduction in size of one shape versus another in the wind is going to cause different results. Therefore a 300cm^2 reduction in an aero helmet (aero shape) would most likely get you less of an improvement than a 300cm^2 reduction is say your chest (flat and non-aero).
Basically this is 1/2 of a piece of 8.5x11 paper in reduction in frontal area.
If this is true it is not clear to me if we are talking at what speed. I assume it is the typical 30mph that is most common. I do realize a reduction in size of one shape versus another in the wind is going to cause different results. Therefore a 300cm^2 reduction in an aero helmet (aero shape) would most likely get you less of an improvement than a 300cm^2 reduction is say your chest (flat and non-aero).
Last edited by:
bartturner: Jan 21, 12 8:25