aw3 wrote:
This is slightly OT but your previous post (that you've quoted there) raises something that I've thought about for a while.
My head size and shape puts me right on the boundary of a medium and large in most helmet makes and models. I'm wondering, how important is size in relation to overall drag?
I know testing is the only way that I'm going to know for sure, but if I can
just squeeze into a
medium Specialized Evade, is it completely pointless even considering any helmet where I'd have to size up to a
large? With the old-fashioned eye-ball test, most look like melons on my head and it's sure hard to see how any reduction in
Cd is going counteract the increase
A.
This may also be why one size fits all helmets like the old Wingspan test poorly on many/most folks; it just may be too big for them.
I'd love to see data not only on how each helmet tested for people; but also data on their head measurement, size helmet tested, head position and angle, etc. Aerodynamics is a science, and with enough data points we could probably get a reasonable predictive model of what helmets will work well for individuals.
ECMGN Therapy Silicon Valley: Depression, Neurocognitive problems, Dementias (Testing and Evaluation), Trauma and PTSD, Traumatic Brain Injury (TBI)