This message is from: "coy...@acrec.com"
...I was sort of hoping that the "scalp must move" rule
could be avoided...
I could use high school physics (for example KE = 1/2*m*V^^2) to
explain, but the bottom line is this: the closer your skull is to the
compressive cushioning, the better. The
This message is from: "plumg...@pon.net"
I was sort of hoping that the "scalp must move" rule
could be avoided if one had a helmet that came down
over the back of the neck...like the Tipperary. My
theory is the more encompassing shape of the
Tipperary means the helmet stays in place better.
The
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