Radio 4 1.30pm today. I've got no other details, I just caught part of a trailer this morning. I've no idea how in depth it will be.
I guess it will be available on iPlayer later.
I guess it will be available on iPlayer later.
I must listen to this on i-player since it sounds like this is the same chap who wrote the A to B article on the same study subject long ago.Quite a good little broadcast I thought. It covered most of the important points in an informed way. I particularly liked the point about him wearing a ladies wig as part of his study!
The presenter Tim Harford does indeed interview the guy who did the A to B wig study. Not a bad programme as he points out there is really no statistics that prove helmet wearing is safer or not. I suppose our forum comes to the same conclusion on the numerous times it discusses this topic!I must listen to this on i-player since it sounds like this is the same chap who wrote the A to B article on the same study subject long ago.
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Leading to the point that knowledge is so often based on belief.- - - belief is not the same as knowledge.
Belief is indeed behind much 'knowledge'. But I still think that A&E cycling staff wearing helmets is a pointer towards informed choice. Another factor is the great change in the quantity and nature of other road traffic in the past 50 years. My old man rode his bike in Romford for many years wearing only a cloth cap for 'protection'; I wish I could be as confident in other road users.Leading to the point that knowledge is so often based on belief.
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Eps and epp have different compression characteristics, given that bumpers and helmets are designed for different impact levels it's not surprising that they require different materials. If eps doesn't compress enough in the most likely impact then it won't protect very well. In motorcycle helmet tests Snell is touted as the best standard, Snell is designed for preserving life at all costs and a lower speed impact can lead to brain injury where a BS helmet would have prevented it. That same BS helmet may have not saved the life in the higher speed impact, it's a balance between preserving life and preserving quality of life and there is no single correct answer.I cut expanded polystyrene (EPS) and expanded polypropylene (EPP) to make electric model aircraft.
EPS, the insulation material in fridges, shatters on impact and transmits shock to the radio gear.
EPP, the impact resisting material inside car bumpers, absorbs shock loading and protects the delicate bits.
What is your helmet made of?
EPS is so many times cheaper.
Dave
How can we tell? (If, that is, looking inside the helmet doesn't reveal an EPP or EPS (or for that matter SNELL) label).What is your helmet made of?
EPS is so many times cheaper.
Dave
In my previous post I didn't mention the biggest problem with helmets and that's getting it to stay on when you crash, it's quite a shock how bendy heads can be. I notice many cycle hemets are poor and will come off easily so in this case I went with Snell as they define fitting standards. The only Snell helmets I know of are Specialized and there is a big improvement over other helmets I've seen, even on the cheap ones.How can we tell? (If, that is, looking inside the helmet doesn't reveal an EPP or EPS (or for that matter SNELL) label).
Expensive things are often made out of cheap materials, so that's no guide in itself...
A