Existence and availability of 200g helmets?
02-08-10 | 04:40 PM
#1
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From: Knoxville, TN
Existence and availability of 200g helmets?
Anybody know whether there are still helmets that passed the helmet tests with a peak acceleration of less than 200g, rather than the standard 300g? I have memories about reading about them, but couldn't seem to find retailers that were actually selling them.
Side note: how much more protection would a 200g helmet provide vs the standard 300g helmet?
(Let's not make this thread a debate over the virtues or lack thereof of helmets per se. Thanks.)
Side note: how much more protection would a 200g helmet provide vs the standard 300g helmet?
(Let's not make this thread a debate over the virtues or lack thereof of helmets per se. Thanks.)
02-09-10 | 07:17 AM
#3
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From: Michigan
Bikes: Windsor Fens, Giant Seek 0 (2014, Alfine 8 + discs)
Anyone know where I can get helmets that weight a full kilogram?
Seriously, 100 grams? for 100 grams you're going to worry about it? Unless you have some sort of incredible neck injury that makes it painful to wear a helmet, really, just take two less swallows of water in the morning, there's your 100 grams.
Seriously, 100 grams? for 100 grams you're going to worry about it? Unless you have some sort of incredible neck injury that makes it painful to wear a helmet, really, just take two less swallows of water in the morning, there's your 100 grams.
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02-09-10 | 08:15 AM
#5
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From: Vancouver, BC
since the standard is 300 g's you might have a problem finding a helmet that advertises itself at 200 g's .
a helmet that would meet a 200 g standard would have to be thicker and softer than the standard helmet. The trend is towards thinner and denser foam.
It'd be interesting to see if you find one.
a helmet that would meet a 200 g standard would have to be thicker and softer than the standard helmet. The trend is towards thinner and denser foam.
It'd be interesting to see if you find one.
02-09-10 | 08:27 AM
#6
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From: Knoxville, TN
To clarify, I'm talking about the peak acceleration. 1g = regular force of gravity. Current standards specify that the head shaped mold cannot receive a peak acceleration > 300g, because even a momentary 300g acceleration would lead to brain damage in a person.
02-09-10 | 09:27 AM
#7
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From: Edgewater, CO
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I can't think of any bicycle helmet company that even advertises peak acceleration forces. You might look toward motorcycle helmets, but even the peak acceleration limits of the Snell 2010 standards for motorcycles is 243g. Snell M2010 Standards
So what you're looking for is probably out there, just not in a bicycle helmet form.
So what you're looking for is probably out there, just not in a bicycle helmet form.
02-09-10 | 03:10 PM
#8
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From: Vancouver, BC
There has been a fair bit of discovery in recent years and studies with athletes have shown that the amount of force and the location of the impact are not necessarily correlated to the severity of the concussion or its symptoms, and have called into question the threshold for concussion previously thought to exist at around 70–75 g's
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