[Mavi Gogun]

http://university.tri-sports.com/2012/03/29/garneau-vorttice-helmet/

[jjcote]

Yeah, maybe. It's also possible that the dimples are there in an attempt to keep the customer from remaining attached to his money, and were designed by somebody in the style and advertising department.

[Mavi Gogun]

Ya- they can't sucker me into paying for what I can do to myself with a razor and hammer.

[CHassan]

Golf ball dimples work great on golf balls. I guess. I have never hit a smooth golf ball. Not that you can compare any of my hits side by side and expect even a slight bit of consistency.


I'm sure that ram air intake is quite aerodynamic too.

[Mavi Gogun]

[old newbie]

Somehow that hole in the forehead is just screaming fence post, branch, sniper target.

Steve

[Bondy]

I tried one of these helmets but when i use my #1 driver it still slices .
Thought it would have worked better fully dimpled with a more diagonal pattern.

[Scorl]

[Bobfly]

Mythbusters covered a car with 2-3 inches of clay and then dimpled it. The result was reduced drag and a significant increase in gas mileage despite the weight of all that clay. Dimples work and airflow turbulators work too. Don't know how effective it would all be at hg airspeeds but for xc competitions, anything that stretches glide and reduces drag is a benefit. Looks odd but then, so do I.

[Mavi Gogun]

That was the first episode of Mythbusters I watched- just 'cuz of possible HG applicability.

[Vrezh]

Good find, Mavi.

They don't mention any sort of aerodynamic engineering or wind tunnel studies.

Wood it be a "gut feeling" type of design or what?

I do believe it has merits, though. I would totally try it out (after taping the forehead

hole).

One way to judge the aerodynamic qualities of a helmet is to observe the wind

noise level in flight (something I learned by going trough helmets over the years).

[kukailimoku]

Seems like the big air scoop located just above the little goatee might negate the dimple's effect....

[Bobfly]

[dangarlandut1]

Golf ball dimples work - on cars, on golf balls - they work!

Just watched a MythBusters TV Episode last night. They tested identical brand smooth and dimpled golf balls with a Pro Driving them, the dimpled went 890 feet and the smooth went 550 or so. "Like hitting a brick", quote the PDGA pro.

Then they made an elaborate Clay covered Automobile, and tested it with and without dimples. With Dimples, 29MPG. Without 26MPG.

FYI: as they always do, Mythbusters DID establish various scientific baselines from sample sets, for the golf ball, for the (only one car used due to slight differences in each car of the same model) car: unmodified, clay-modified, clay-dimpled (with exact dimple clay weight in back seat to keep weight the same).

[tom emery]

So, how much does it cost?

[Mavi Gogun]

I think it's like $250... and irrelevant for me: I require mine to have a dimpled chin guard, too.

[pipefuser]

My first girlfriend had dimples and she was real fast.

[Avnav8r]

[jjcote]

Dimples definitely work on a golf ball. But there are a number of differences between a golf ball and a helmet (e.g. a helmet doesn't spin), and I wouldn't necessarily think that scaling the dimples proportionally would be the right thing to do. This just strikes me as something that was developed by a simple principle: "Hey, people know that dimples work on golf balls, and helmets are round, so let's make the helmet look like a golf ball, and people will buy them because they'll think it will work the same way".

[Vrezh]

Dimples work, spinning or not.

Even Atomic went to an extent to make the upper surfaces of

their racing skis sort of "dimpled".