Does anyone have any idea on the aero difference between a Specialized Evade 2 and a Giro Aerohead?
I know it's impossible to say for sure without testing in the wind tunnel, but is it possible to say anything at all? I've heard estimates of only 2-3 watts, but that sounds low to me.
The reason I'm asking is I'm about ot do my first Ironman in a few days time, and can't decide on wich helmet to use. I expect the Areohead to be faster but the Evade has better ventilation. I usually sweat a lot, so using the Evade is tempting.
I know it's impossible to say for sure without testing in the wind tunnel, but is it possible to say anything at all? I've heard estimates of only 2-3 watts, but that sounds low to me.
The reason I'm asking is I'm about ot do my first Ironman in a few days time, and can't decide on wich helmet to use. I expect the Areohead to be faster but the Evade has better ventilation. I usually sweat a lot, so using the Evade is tempting.