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Thoughts on this quote..? (yes helmet thread)
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08-10-2012 12:45PM#1
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Lusk Doyle wrote: »Eh, a bit of context is needed before someone can comment
Apologies, updated OP.0 -
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Oh look. Another helmet thread.
Stolen shamelessly from buffalo.0 -
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When I crashed off my bike at speed I got my arm and leg ripped up. Had I not been wearing a helmet, I have no doubt that I would have got my arm and leg ripped up.
There, does that cancel your anecdote?
When I was out on my bike last week, a bird pooed on my head. Had I not being wearing a helmet I have no doubt that it would have gone in my hair.......
(I trust this anecdote has been suitably pointless and thereby cancels it self out
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When I was out on my bike last week, a bird pooed on my head. Had I not being wearing a helmet I have no doubt that it would have gone in my hair.......
(I trust this anecdote has been suitably pointless and thereby cancels it self out )
Same thing happened to me last week, but it got my shoulder. I was wearing a helmet, but it didn't make any difference.
...the pointlessness of this anecdote is so vast that I reckon yours has now been made relevant.0 -
When I was out on my bike last week, a bird pooed on my head. Had I not being wearing a helmet I have no doubt that it would have gone in my hair.......
(I trust this anecdote has been suitably pointless and thereby cancels it self out )
Same thing happened to me last week, but it got my shoulder. I was wearing a helmet, but it didn't make any difference.
...the pointlessness of this anecdote is so vast that I reckon yours has now been made relevant.
So pointless that you chose not to include it in your weekly rantings? You disappoint me sir!
I always wear a helmet. In the last open race I did this year I crashed and would have cracked my temple were it not for my helmet, since binned!0 -
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Moderators, Science, Health & Environment Moderators, Society & Culture Moderators Posts: 60,306 Mod ✭✭✭✭
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Remember reading a study about helmet use and vehicles where they worked out that statistically the vehicle where helmet use would save the most lives and which one was that? Cars. Yep, apparently head injuries in cars are a serious issue. These dropped off when airbags came aong but are still a problem. The joke is wearing a helmet in a car is illegal...
*Personally speaking* whatever floats your boat, whatever makes you feel safer is a good thing and fair play. I never wore one and TBH I doubt I ever would. Why? In my time being both a dopey and clumsy cove, a bad mix, I've had quite the number of crashes on(or is that off?) a bike and in none of them did I hit my head. Hands, wrists, knees and shoulders yes. Had a nicely dislocated one of the latter back in the day. Fun cycling home from the wicklow mountains with that I can tell you, though to be fair I was 19 so had plenty of one armed practice in other pursuits at the time.... Secondly I might put much more faith in one of those horse riding stylee one piece without vents jobs, than the mulitvented lighter than air jobs favoured by the general cycling fraternity. IMHO and it is of course IMHO they are about as much use as a chocolate fireguard beyond very low impact forces. Put it another way there's no way in hell they'd be passed for horse riding and if you suggested one to a motorbiker he'd laugh in your face. They remind me of a slightly better version of the old stylee leather padded jobs.
Then again that is Sean Kelly, a man that could headbutt the most vicious Belgian pave and it would come of worse from the encounter.
Like I said, whichever makes you feel safe/better is all that matters.
PS I suppose being the old fart I grew up in an era where my cycling heros went bare headed so I reckon that influences me. Ask a 20 year old who has their own cycling heroes and they're all helmeted.Many worry about Artificial Intelligence. I worry far more about Organic Idiocy.
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I always found this research interesting. No-one has ever really followed it up, as far as I know.
http://cyclehelmets.org/1183.htmlResearch by Corner, Whitney, O'Rourke and Morgan, 1987, commissioned by the Australian government to support forthcoming helmet laws, found that the standard tests for helmets were deficient as they only considered protection of the brain against a direct blow and not the reduction of angular (rotational) acceleration. Corner et al. also found by experiment that the mass which a helmet adds to the head can actually increase angular acceleration, which is linked to severe injury to the brain.
There's some more discussion of Corner's work in this:
http://www.cyclehelmets.org/papers/p787.pdf
I like the story about the woodpeckers too.The second report of the Australian House of Representatives committee in 1985 recommended legislation to compel the wearing of bicycle helmets. The committee recognised that in support of it a mandatory standard was needed to assure the public of the efficacy of helmets. With the aim of making helmets more acceptable to the public, the committee recommended research on whether they could be better ventilated and lighter, such as by dispensing with hard shells. But the research, by Corner et al, did not simply endorse such revisions. Corner et al. reported that the standard tests were deficient in merely protecting the brain against a direct blow but not in reducing angular acceleration. To minimise it, they said that helmets should have very stiff shells with a low impact sliding reaction. In experiments simulating crashes with helmeted dummies falling forward over the handlebars at 45 km/h, they found angular acceleration averaging 58,000 rad/s , about 30% higher than the polymer full-face motorcycle helmets tested. This angular acceleration compares with 4500 rad/s for the onset of vein rupture and 1800 rad/s for cerebral concussion. The authors also noted that tests involving a forward velocity 8.3 m/s, or 30 km/h, plus a drop height of 1.4 metres had shown that even helmets with hard polymer shells did not slide on impact, presumably due to the high vertical force acting. In those tests, peak angular accelerations of 4800-15400 rad/s, varying greatly by kind of surface, were reached after 5-10 ms, falling to a fourth of those values or less by 10-13 ms. Corner et al. commented that the standard tests for helmets do not reflect the actual crash situation which usually involves considerable horizontal acceleration of the head as well as vertical acceleration. These result in high angular acceleration of the head on impact.
I notice that quite a lot of helmets are more compact and rounded now. I suspect these are safer than the long, more sporty-looking one, since the effective diameter of the head is germane to rotation, in addition to the extra mass mentioned above. Also, some of them seem to be hard-shell, which I think has a lower coefficient of friction than a soft-shell helmet, or even a head. If your head glides over the ground in a fall, it's decidedly less likely to rotate relative to your spine.
That being said, the chances of you suffering a serious head injury, helmeted or not, is not very high.
I think we've been through all this before?
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Why do so many cyclists wear dark glasses when cycling at dusk? I've assumed the glasses are to keep particulate matter out of the eyes and to prevent the eyes from streaming, but why dark glasses when the ambient light is low?
This is probably a very silly question.
cos it makes us look cool
(and cookie monster - i do carry 2 pairs ) My weather
https://www.ecowitt.net/home/share?authorize=96CT1F
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smacl wrote:The difference in Ireland and Holland is that Ireland dumped the bike in favour of the car at the first opportunity.
You may well be right. I certainly believe that the car is all horribly wrapped up in the Irish sense of growing up and "doing well for yourself" (whatever that really means). Amongst my generation the bicycle seemed to be considered something you used out of necessity rather than desire, and even while I was in college those few students that drove in seemed to have a slightly elevated status as if they were somehow more mature, more responsible, and already more successful than everyone else. Those of us who cycled to college seemed to be categorised as the polar opposite. I'm out of college 20 years now and I still encounter that same mindset in the workplace (only a few years ago, before I learned to drive and bought my first car at the relatively ripe age of 35, I was told by someone that cars are great, implying that bicycles suck, and that I'd realise this "when I could afford one" i.e. adult using a bicycle = childish and broke).
From a distance I've always assumed that the Dutch had a very different mindset, and saw the bicycle for the extremely useful and practical tool that it really is. By extension I assumed they recognised the folly of a dependence on the car and wouldn't promote or foster a culture that put the car ahead of everything else. However, I was watching part of a documentary on the bicycle as a mode of transport a few months back, which included an interview with someone heavily involved in the pro-cycling lobby in The Netherlands. He said that they'd had to fight hard in recent years to resist the efforts of the motoring lobby to convert some side streets in Amsterdam into routes for cars - I presume that the streets are currently for cyclists and pedestrians only. The intention was to try to ease motorised traffic congestion by providing cars with alternatives to the existing routes.
In fact, he gave the impression that the cycling lobby were constantly having to fight their corner in order not to lose ground (literally) to the motoring lobby. I was surprised, the idea of a large and powerful motoring lobby leaning on the cycling lobby went against my view of The Netherlands. It made me wonder whether there really is that much difference between the mindset in The Netherlands and that in Ireland. Cycling is clearly a success over there (in that it is considered normal), it's popular, and it doesn't seem to have the image of being inherently dangerous, so they certainly appear to be in a different place than we are here in Ireland, but why is that though? - that programme challenged my simplistic view that they've got to where they are because of a common mindset that elevates cycling above motoring, it does not appear to be anything like as simple as that. Which is perhaps a cause for optimism, 'cos if the Dutch are managing to overcome the narrow mindset of the motoring lobby over there, maybe it suggests that we could do likewise over here and that's something that I've considered a lost cause for a long time now.
Anyway, I should really drag this post back on to the topic of the miraculous helmet. What would Dr Doolittle do? He'd give out free helmets to all rabbits, hedgehogs, etc., giving them instant life-saving protection and eliminating in one simple step the carnage of squashed wildlife on our roads. 0 -
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