Discussion
As an engineer, infact an engineer that specialises in stress analysing things, I would say that your helmet should continue to offer the same level of protection after the drop.
The helmet provides impact protection via its EPS foam. When the foam compresses, it absorbs energy. With no head inside the helmet during a drop, there is nothing to make the foam compress. As for the shell, I find it hard to believe that there could be cracks serious enough that your helmet is going to desintergrate.
Having said that, I dropped my helmet recently and I used it as an excuse to get a new one.
The helmet provides impact protection via its EPS foam. When the foam compresses, it absorbs energy. With no head inside the helmet during a drop, there is nothing to make the foam compress. As for the shell, I find it hard to believe that there could be cracks serious enough that your helmet is going to desintergrate.
Having said that, I dropped my helmet recently and I used it as an excuse to get a new one.
creampuff said:
As an engineer, infact an engineer that specialises in stress analysing things, I would say that your helmet should continue to offer the same level of protection after the drop.
The helmet provides impact protection via its EPS foam. When the foam compresses, it absorbs energy. With no head inside the helmet during a drop, there is nothing to make the foam compress. As for the shell, I find it hard to believe that there could be cracks serious enough that your helmet is going to desintergrate.
Having said that, I dropped my helmet recently and I used it as an excuse to get a new one.
What about if the outer shell deflects and crushed the EPS in that area. Would that not make the EPS layer thinner and that area of the shell weaker; thus creating an area that 'absorbs' the energy less effectively?The helmet provides impact protection via its EPS foam. When the foam compresses, it absorbs energy. With no head inside the helmet during a drop, there is nothing to make the foam compress. As for the shell, I find it hard to believe that there could be cracks serious enough that your helmet is going to desintergrate.
Having said that, I dropped my helmet recently and I used it as an excuse to get a new one.
Apriliaer said:
What about if the outer shell deflects and crushed the EPS in that area. Would that not make the EPS layer thinner and that area of the shell weaker; thus creating an area that 'absorbs' the energy less effectively?
AFAIK there is a gap between the shell and the EPS foam. Also I don't believe the shell will deflect more than a millimetre or so when you drop it. I've said it before on these threads and I'll keep on saying it: my mate wore an expensive brand of helmet often raved-over on here. He nutted a lamp-post at moderate pace, broke his neck and was dead a few minutes later. No helmet on the planet whether cheap, expensive, scratched, chipped or otherwise, was going to save him.
So make your own choice. Spend the money if you think it's likely to make any difference. If it does you won't know, because you won't have been wearing a different helmet. If it doesn't you still won't know, because you'll be riding a cloud.
Paranoia: it's a wonderful tool for marketing men
So make your own choice. Spend the money if you think it's likely to make any difference. If it does you won't know, because you won't have been wearing a different helmet. If it doesn't you still won't know, because you'll be riding a cloud.
Paranoia: it's a wonderful tool for marketing men
Wedg1e said:
Paranoia: it's a wonderful tool for marketing men
Helmets aside, it has amazed me the elitism in motorcycling gear. As if one brand is superior to another based only on cost, looks and anecdotes. Especially when it comes to leathers."A thousand pound Dianese single piece is the best you say?"
"Yes sir, my mate crashed and he survived so its the best and most expensive we sell. How much is your skin worth?"
"Presumably it's tested independently to a specific standard then?"
"No".
"Designated as safety clothing and CE marked as such?"
"No."
"Built to a specific set of safety guidelines?"
"No."
"It's a fashion accessory then isn't it?"
"Yes."
"I'll take the RST one thanks".
The Moose said:
moanthebairns said:
f
k the petrol station staff!
I doubt they'd appreciate that...although, if they're hot k the petrol station staff! 
some how work the following lines into the script...
fill her up,
which pump did you use?
stick that on my loyalty card,
ive had a bit of a spillage,
can you please take your helmet off? cant you take it off for me hen!
enter your chip and pin into here big boy!
Chipchap said:
1 drop = scrap.
Aha, the helmet manufacturers advice was quick out there. Many moons ago a friend and I set about trying to break a helmet he was discarding anyway. With a sledge hammer. It took loads of blows (I used to know how many but memory fails to serve up the number), so I doubt a simple drop could do significant damage.Following on from previous post:
http://www.youtube.com/watch?v=9LfEFhBelTY&fea...
Unscientific and certainly unclear as to what is actually being tested here. But it shows that some helmets are crap and most likely to break or be damaged. Other ones which comply with relevant international standards are a little more sturdy and should cope with some simple day-to-day knocks.
http://www.youtube.com/watch?v=9LfEFhBelTY&fea...
Unscientific and certainly unclear as to what is actually being tested here. But it shows that some helmets are crap and most likely to break or be damaged. Other ones which comply with relevant international standards are a little more sturdy and should cope with some simple day-to-day knocks.
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