Giro helmets - huge appreciation

[Angelfishsolo]

similar to the pedestrian argument, just because more pedestrians have more head injuries does not mean being a pedestrian is more dangerous

Indeed. There are more peds per capita than any other form of transport.

 

[Angelfishsolo]

on page 3?

No page 56 . Page three discussed the merits of the Sicilian defence

 

[david k]

Indeed. There are more peds per capita than any other form of transport.

dont admit to that though because it wont help our quest to make people who wish wear helmets out to be fools

 

[david k]

No page 56 . Page three discussed the merits of the Sicilian defence

didnt get to page 56, in fact i rarely get passed page 3.

 

[tigger]

OK here's some pictures.

As you can see and from my description, definitely hit my head. My head was the only contact area with no damage.

Its purely speculation without photos and the helmet to look at but my guess would be that you did a typical cyclist high speed fall in which you rolled and slid on your body and arms and kept your head clear of the ground. Your helmet from your description is cracked. If it had done anything to mitigate an impact you would have seen a circular area of heavily compressed polystyrene. The fact that you didn't (or at least you haven't reported it despite being given the opportunity to) and it was visibly not the case in gaz's helmet photos means your heads probably never hit the inside of the helmet with a force even equivalent to a 12.5mph impact (that being the speed at which you should get bottomed out compression of the foam). You see the helmet is designed to work by decelerating you head slowly over the distance of the foam thickness as it compresses rather than abruptly as the bare head hits the object. That compression is non-reversible so its not that its sprung back, its designed to stay compressed. So no compression means no force had been applied to the outside of the helmet big enough to push it against the head and crush the foam. If the force is that low it is very unlikely to have caused injury if applied directly to the head. Fracture often occurs because a vent of something catches on the way and snaps the polystyrene in two which is very easy to do, unlike compressing it.

Just my speculative $0.02 since you asked for it.

 

[Angelfishsolo]

dont admit to that though because it wont help our quest to make people who wish wear helmets out to be fools

I am a fool many times over David. I happen to be a safe one

 

[Angelfishsolo]

OK here's some pictures.

As you can see and from my description, definitely hit my head. My head was the only contact area with no damage.[attachment=4513:Helmet1.jpg][attachment=4514:Helmet2.jpg]

Looks like you landed on something proud of the ground?

 

[Angelfishsolo]

didnt get to page 56, in fact i rarely get passed page 3.

Tit

 

[david k]

Tit

pair of tits

page 3, not us

 

[david k]

OK here's some pictures.

As you can see and from my description, definitely hit my head. My head was the only contact area with no damage.[attachment=4513:Helmet1.jpg][attachment=4514:Helmet2.jpg]

no doubt they will find a way to discredit this, wait for it, it will be along in a moment

 

[Dan B]

OK here's some pictures.

As you can see and from my description, definitely hit my head. My head was the only contact area with no damage.[attachment=4513:Helmet1.jpg][attachment=4514:Helmet2.jpg]

Contrast with mine: http://www.flickr.com/photos/coruskate/tags/helmetsavedmylife/ where you can see the polystyrene actually crushed partially instead of just snapping.


I buy Giros because they're the brand that fits my head best, but I've never found the replacement programme particularly good value: last time I broke a helmet I was looking at £50 plus postage to send the old one back, or £60 (CTC discount) to go and buy one from Evans

 

[tigger]

Looks like you landed on something proud of the ground?

There's gotta be double entendre in that question lol

Yeah looks that way doesn't it. Its not the best surface so could have been a loose stone or just a stone protruding. Hard to say with all the forces. Glad my soft skull and skin didn't take the brunt of it though.

Whatever damage is on the helmet is damage my head didn't take

 

[Angelfishsolo]

There's gotta be double entendre in that question lol

Yeah looks that way doesn't it. Its not the best surface so could have been a loose stone or just a stone protruding. Hard to say with all the forces. Glad my soft skull and skin didn't take the brunt of it though.

Whatever damage is on the helmet is damage my head didn't take

I am a helmet wearer and I would be delighted with that result. How are your injuries?

 

[Red Light]

All of the data collected is based on reported injuries correct? I have never reported the times I have come of my bike and hit my head as there was no need to. I am not alone in this. That skews the data surely?

It does but not in a way that helps your and david k's beliefs. Either your accidents would not have produced head injuries worthy of reporting anyway or the helmet changed what would have been a head injury into no head injury.

The ones where nothing would have happened anyway we can ignore because they will be unreported either way. For the others, when you double the number of helmet wearers as happens when mandatory laws are introduced, then you are going to convert a large number of what would have been reported head injuries into non-reports. i.e the number of reported head injuries will drop.

The fact that no drop is seen indicates that conversion process is not happening i.e. the new helmet wearers saw no decrease in their number of head injuries despite them all wearing helmets for the first time. As before, there are two options. Either head injuries are not decreasing because helmets are doing nothing that changes the outcome or they are causing people to have more accidents which compensates for the lower percentage of accidents which caused a head injury.

 

[tigger]

I bet you the price of a new lid (with or without the replacement offer) that your skull is made of something less soft than polystyrene ;-)

Yes of course, but that polystyrene still took the knock so my beautiful (subjective) less soft head didn't have to...