What on Earth was Chris Hoy wearing on his head this weekend, and can it possibly be UCI-legal?
Supplementary question: if it is legal, where does one get one?
For those of us that did not see it, any links?
-- Don Whybrow
Sequi Bonum Non Time
"My God! The thought of that evil man, loose in London--with money, from God only knows what source--fomenting riot and rebellion during a public emergency--and in control of an Engine- driven press! It's nightmarish!" (Gibson-Sterling, "The Difference Engine"😉
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
"Simon Brooke" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whereas some of us thought it was an incredibly ugly lid looking very dorky :-)
"Simon Brooke" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whereas some of us thought it was an incredibly ugly lid looking very dorky :-)
I am sure that in the pursuit of speed, thoughts of fashion and dorkiness are secondary. Having only seen the links to the helmet, I imagine it would make one look a bit like a bug eyed monster.
-- Don Whybrow
Sequi Bonum Non Time
A conclusion is the place where you get tired of thinking. (Arthur Bloch)
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
And sooooo much better than those long ugly pointy athings that stick two-feet up into the air like an alien antennae when the wearer contemplates the tarmac, while two feet behind the artic/coach/caravan they are tailgating.
It looks more like the BMX stylee which has an in-built youngster cool-factor.
"Simon Brooke" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whereas some of us thought it was an incredibly ugly lid looking very dorky :-)
I am sure that in the pursuit of speed, thoughts of fashion and dorkiness are secondary. Having only seen the links to the helmet, I imagine it would make one look a bit like a bug eyed monster.
Yep, a bug-eyed-mighty-fast-monster-thighed-kilo-specialist bike rider. Here he is in ation at the worlds.
"Simon Brooke" <[email hidden]> wrote in message news:[email hidden]...
Quoted message said:
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whereas some of us thought it was an incredibly ugly lid looking very dorky :-)
I am sure that in the pursuit of speed, thoughts of fashion and dorkiness are secondary. Having only seen the links to the helmet, I imagine it would make one look a bit like a bug eyed monster.
Yup. But, seeing the rules are you have to wear something silly on your head for racing, I thought that one looked interestingly less silly.
-- [email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/ Ye hypocrites! are these your pranks? To murder men and give God thanks? Desist, for shame! Proceed no further: God won't accept your thanks for murther -- Robert Burns, 'Thanksgiving For a National Victory'
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whoever wrote that press release doesn't know as much as they think they know about aerodynamics. My knowledge isn't perfect (doesn't smeone here have the Navier Stokes eqn in there sig?) but what I think they're trying to claim is:
The helmet doesnt have the classic teardrop shape (which is used to prevent flow separation) because the dimples cause turbulence in the boundary layer, which prevents the adverse velocity profiles that cause flow separtion and hence form drag.
They talk about "> Breaking surface air tension and prevent it from clinging on and down the riders back.
Apart from the nonsense about surface air tension, don't you actually *want* the flow to remain attatched down the rider's back? Ho Hum Yeaterday I came across a picture of myself riding in a TT wearing a lycra hat (like a swimming hat) that I thought would save me a handful of seconds. It made me look like a complete wazzock. It wan't even on straight. Roger Thorpe
>What on Earth was Chris Hoy wearing on his head this weekend, and can it >possibly be UCI-legal? > >Supplementary question: if it is legal, where does one get one? >
It doesn't look like a bike helmet, it looks much more like a skull cap. I don't suppose it's any better in a crash than any other helmet - except less likely to cause rotational injuries - but at least he didn't look like a total dork wearing it.
Whoever wrote that press release doesn't know as much as they think they know about aerodynamics. My knowledge isn't perfect (doesn't smeone here have the Navier Stokes eqn in there sig?) but what I think they're trying to claim is:
The helmet doesnt have the classic teardrop shape (which is used to prevent flow separation) because the dimples cause turbulence in the boundary layer, which prevents the adverse velocity profiles that cause flow separtion and hence form drag.
They talk about "> Breaking surface air tension and prevent it from clinging on and down the riders back.
Apart from the nonsense about surface air tension, don't you actually *want* the flow to remain attatched down the rider's back? Ho Hum
You want the flow to separate behind the head in a controlled manner. In a kilo or sprint situation a rider's head will present varying aspects so a teardrop will cause more drag than it would if you kept your head still as you might for a pursuit of longer road time trial.
The intricacies of laminar flow, turbulent flow and boundary layers are well complicated. Suffice to say a dimpled golf ball will fly further than a plain one. -- Phil Cook looking north over the park to the "Westminster Gasworks"
However, I did wonder if I was a great cyclist, maybe I could wear what I wanted?
That's probably about it- you don't get laughed at so much if you cross the line first...
A while back I remember someone posting to rec.skiing about how happy he was with a pair of Lange boots that had lost him three toenails... What would make him unhappy with a pair of boots?
On Feb 25, 10:26 pm, "David Martin" <[email hidden]>
Quoted message said:
Tony B said:
Simon Brooke wrote:
<snip>
Quoted message said:
It then becomes cool.
..d
....or very, very hot. Don't see much ventilation there. Probably doesn't matter much to the kilo. specialists and other short distance track monsters, but it looks like it was designed to cause your head to overheat as fast as possible.