Skiing vs cycling

[steveindenmark]

I reckon it could take more of a hit than a cycle helmet but less than a bare skull, is that technical enough? :-)

So if we link that to the camel thread, maybe we should all be riding in something like a turban. :0)

Steve

 

[slowmotion]

There's an interesting article here that covers quite a bit of ground.
http://www.ski-injury.com/prevention/helmet

 

[roadrash]

I am seriously thinking of getting back into the protective headwear thing. I tried some bloke's bowler hat on last night and reckon I could go with one.

like your style, being from lancashire i will be going for the flat cap myself

 

[Linford]

No different from much helmet debate.....

Rotational injury.... No documented case of it ever having happened only academic speculation that it might occur.

Strangulation by cycle helmet.... Has never happened with a cycle helmet used on a bike only with a couple of kids on climbing frames.

Actually it is different, Schumachers helmet demonstrably did work to a degree way beyond its design specification. Much like coming of a bike and hitting the edge of the kerb. Some Protection from low probability high consequence events.

Skin and hair is actually quite grippy....a lot more grippy than the polished surface which these lids have. More chance of a rotational injury without a lid

 

[mcshroom]

Rotational injury.... No documented case of it ever having happened only academic speculation that it might occur.

Er @User, fancy telling him this statement is bollocks by any chance?

 

[PK99]

Er @User, fancy telling him this statement is bollocks by any chance?

even these folks http://www.cyclehelmets.org/1039.html only cite academic speculation

 

[srw]

even these folks http://www.cyclehelmets.org/1039.html only cite academic speculation

I think this is going to be one of those cases where an anecdote is useful.

(There are two circumstances in which anecdote is enough to prove an argument - where you're trying to prove the existence of something and where you're trying to disprove a universal.)

 

[Linford]

Especially for people with horns and other snag points on their head.

Just cut em off

 

[Wobblers]

In detail no. But i have googled ski helmet design specs and from all descriptions of the accident it was way beyond the design spec.

Somehow, I suspect you didn't have the appropriate instrumentation (strain guages and calibrated accelerometers) to measure the actual forces involved in this case.

In other words, your assertion doesn't have any foundation in fact. Try this line in any science lab and you'll be laughed out the door as you're being fired...

 

[Wobblers]

By all accounts Schumi was not going fast or dangerously even if off piste and when he initially treated was ok at the scene. The helmet was cracked, but it appeared to be a non trivial incident, it only transpired after a while that it was more serious. I'm wondering if this could not be related to previous brain crash injuries during his driving career, it was minor but maybe the straw that broke the camels back?
I have no doubt that skiing is more dangerous hour for hour than cycling, I've seen some horrific accidents on winter holiday's, and been subject to one myself.

If the helmet cracked rather than crushed, it may have absorbed very little impact energy indeed. That very much suggests to me that it failed.

 

[Wobblers]

Skin and hair is actually quite grippy....a lot more grippy than the polished surface which these lids have. More chance of a rotational injury without a lid

Could I ask you to add "physics" to the list of subjects you ought to read up on?

For starters, what's the definition of "torque"? (And I'm expecting you to at least supply the relevant maths)

 

[Wobblers]

Now I accept that my version was a little bit subtle but I am having on TMN for this.

Nice try, but no. You failed to supply an explanation as to why the statement was wrong.

 

[swansonj]

I can't be bothered to follow up the reference now to see how robust it is, but I have read that one of the reasons we have retained hair on our heads whilst losing it elsewhere is that the low friction presented by hair compared to skin reduces the rotational acceleration produced by any given glancing blow to the head - and as we all know, don't we, it is rotational accelerations that are far more damaging to the brain than linear ones. A polished smooth motorcycle lid may be even lower friction, after all a lot of development has gone into making them that way - but that just reinforces the argument that cycle helmets with air vents and (until, like me, you cut them off) visors are likely to be worse.

 

[swansonj]

Sorry?

Ok, losing most of it in most other places, speaking in evolutionary terms about the race as a whole rather than any individuals...

Perhaps I should just have said, one of the reasons we tend to have more hair on our heads than elsewhere.

 

[Linford]

Could I ask you to add "physics" to the list of subjects you ought to read up on?

For starters, what's the definition of "torque"? (And I'm expecting you to at least supply the relevant maths)

without googling it torque can be measured as a rotational force and usually in newton metres or lbs per ft.....now your turn...no cut and paste now mister.