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Dorikka comments on Wear a Helmet While Driving a Car - Less Wrong Discussion
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Good point. I would be interested in learning what types of impacts (in terms of acceleration, preferably rotational) crasche is designed for, as well as its performance compared to traditional helmets. Do you know of any commonly used metrics that might ve useful for comparing helmets in general? If I remember correctly, the ASME standards use a very high acceptance criteria for linear acceleration (>100g) and do not account for rotational acceleration (which seems to cause most of the damage.)
This helmet is some neoprene (not rigid foam) inside pieces of a plastic shell. It doesn't look capable of passing certifications and the website does not mention any (or, actually, any data on how well it deals with impacts).
I got some info, linking in case you're interested.
Hmph. I sent them an email asking for some quantification of performance, or studies if they have them. Will see what they say.
Sorry, but I don't have the data you request.
I got some info regarding this, linking in case you're interested.