The diagram doesn't say "first impact" it simply accounts for ALL impacts. If you hit chin first and slide, your head will tilt down, scraping your visor.Randy wrote:I think its weird how they got that diagram. I wonder how you crash and hit your visor first.
JR, I do believe that there are full-face helmet manufacturers that are working on designs that are a bit "smarter". I believe there's an Italian helmet maker that has designed a helmet that gives you the ability to see directly behind you (due to a channel with a few mirrors in the helmet that as I remember pass above your skull).jrdudas wrote:I certainly can't argue with the logic presented by the postings in this thread; I however wonder about other factors that always go unmentioned. For instance; when I started wearing a 3/4 helmet I immediately noticed that my ability to hear noises near me was drastically reduced. On several occasions I was suddenly passed by a vehicle that I never heard. I have also found that wearing a full-face helmet severely limits my field of view. Those two issues represent to me that certain factors affecting safety are compromised by helmets that block your ears and interfere with your eyesight.
Now please don't misunderstand; I'm not trying to convince myself or anyone else that they should not wear a helmet. It just seems to me that the current choices available in helmets are at best a compromise; ie, in order to improve the protection offered by these designs you must accept that there is a reduction of the input of two of our most important senses. I don't think anyone can make a convincing case for not wearing protective headgear; I'd just like to see some more innovative designs come to the marketplace.
As a sidebar; why do all the motorcycle mounted police forces wear shorty helmets?
JR
Okay. Where is any data to back these up? Anything? If they're all just your impression, thats fine. But don't go and make a statement like this that implies that there is any statistical proof.slimcolo wrote:I wear a shorty for hot weather. My reasoning is that the heat has more potential to cause harm than decreased protection. We all know the up side of wearing a helmet but many don't know the downsides. (increased fatigue,decreased hearing/vision, heat and dehydration)
It depends. I've been riding in the desert southwest for a few decades now and when it's really hot out, the full face can really exacerbate the problems. Wearing a full face helmet in the desert on a 100+ degree day will prevent sweat from evaporating around your head (which is one of the bodies major heat radiators). You end up with a very hot, very wet head. Your head will keep sweating profusely, but you lose the cooling effect.Lion_Lady wrote: hmmm, 'heat and dehydration' - another one I'm trying to figure out. I'll give you that it can be a bit warm inside a full face helmet... when sitting still or stuck in traffic. BUT when you're moving, a full face will actually REDUCE dehydration, because it prevents the wind from pulling moisture off you as quickly.
P
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