Originally posted by krumly
Think of it in terms of basic physics: force = mass times acceleration. A puck or stick hitting your head may be moving fast, but the force is
nothing like that a head backed up by a human body hitting pavement at speed.
Aren't hockey helmets designed with ethafoam or some other kind of 'elastic' foam that doesn't permanently deform on impact? Been years since I
looked at one, but that's how I remember them. Foam liners in bike helmets and snow sport helmets are designed to permanently deform on impact,
absorbing energy and slowing deceleration a lot more than multiple impact helmets. 20 years ago, before all the Snell and CPSC standards were
developed, there were some bike helmets that used elastic foam. They didn't pass the tests.
krumly |