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PostPosted: Thu Nov 01, 2012 7:49 pm 
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Joined: Mon Dec 08, 2003 1:37 am
Posts: 245
Location: Sewickley, PA
I will snag the Giro air attack w/lens as soon as it comes out, looks OK for cooler ride days and should give some advantage in a 25+ mile race.

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Posted: Thu Nov 01, 2012 7:49 pm 


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PostPosted: Thu Nov 01, 2012 10:44 pm 
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Joined: Thu Nov 03, 2011 2:53 am
Posts: 43
Location: Adelaide, Australia
My Specialized Prevail is also supposedly (amongst other things) an aero helmet. I can't see it either.

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PostPosted: Thu Nov 01, 2012 11:00 pm 
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Joined: Tue May 31, 2011 9:48 pm
Posts: 84
This one doesn't require any mid-race trips to the car, and even reduces total weight!

Image


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PostPosted: Fri Nov 02, 2012 9:16 am 
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Joined: Sun Sep 03, 2006 1:55 pm
Posts: 2051
Location: Western Australia
prendrefeu wrote:

For example, part of the reason why the Toyota Prius gets such "high" gas mileage isn't necessarily that it is a hybrid, it is the body shape and details in the design that minimize drag. Drag is in large part affected by the way the air ends off of the object.


Yup. Since we're primarily talking about pressure drag, they just need to push the separation region as far back as possible. TT helmets and tube profiles are now using less streamlining and more boundary layer manipulation to lower the pressure drag. The vortex vanes on LG's vortice helmets and the 'tripwire' on BMC's new tube shape are examples. They just need to keep the flow attached to the helmet.

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PostPosted: Sat Nov 03, 2012 2:15 pm 
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Joined: Mon Aug 04, 2008 11:09 am
Posts: 317
prendrefeu wrote:
I am also not an engineer, but taking a look at the 'aero' claims by LG (Course Helmet) and Carrera (Radius/Razor) it seems that these two offerings are attempting to maintain ventilation while allowing for some aero qualities of the helmet overall


I know enough of aerodynamics to understand there is more than making it look like a tear drop ;)

But that said I think the Carrera looks completely generic... not different than the average Giro. I'm sure I'm missing something, but the problem is that only a few salesmen put it up as aero, Carrera themselves seem rather sparse with info. :noidea:

Quote:
RADIUS, Revolutionises the Pro helmet. Developed using the innovate "ATF" (Aluminium Tech Frame) system, Radius offers the best aerodynamic penetration (CX) which is synonymous of optimised internal ventilation and less frontal air resistance.*


Nice words, but best compared to what? Best of every road helmet? Best Carrera?

Not saying other manufacturers don't do the same thing, but with LG and Giro I can see the differences, this helmet looks amazingly generic. But hey, if it works I'll be in line buying one as it sure looks less silly (I need that as I am just pack fodder).


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PostPosted: Sun Nov 04, 2012 5:40 am 
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Joined: Tue Aug 02, 2011 9:20 pm
Posts: 1154
Location: New Zealand
Hell get that Kask TT helmet! I'm sure it would work both ways even without the visor!

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PostPosted: Sun Nov 04, 2012 8:36 pm 
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Joined: Fri May 18, 2012 7:11 pm
Posts: 296
Location: FL
The Kask is great but not $500 great unless racing.


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PostPosted: Thu Nov 08, 2012 11:03 am 
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Joined: Thu Nov 08, 2012 10:56 am
Posts: 5
Guys, couldn't I just put a condom over a helmet?


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PostPosted: Thu Nov 08, 2012 12:47 pm 
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Joined: Thu Dec 22, 2011 12:37 am
Posts: 398
http://university.tri-sports.com/2012/0 ... k-of-aero/

Anyone heard anything about that second helmet? I just got a Bambino and I don't think you would want to use it in anything but a time trial.

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PostPosted: Thu Nov 08, 2012 4:31 pm 
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Joined: Tue May 29, 2012 1:38 pm
Posts: 23
15wilsonwu wrote:
Guys, couldn't I just put a condom over a helmet?

Put a 0.02mm so that no one will notice


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PostPosted: Sat Nov 10, 2012 10:55 am 
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Joined: Tue May 10, 2005 4:59 am
Posts: 78
llhh wrote:
Have to say that this topic almost beats "The Freaks" topic!

Image


Awesome. Nice to try one day but unused :lol: :lol:

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