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Discussion Starter #1


Racers are always looking for an edge, right? check this.

Ok they look cool or their hideous or they can't work? Is one of these statements you?

Well the answer here is yes they do work. Aeropsace industry spends millions researching things like this and their finding have put these type of devices in different variations on planes all over the world from small to large.

NASA says they work (NO, not THAT NASA, the space guys LOL):
http://www.nasa.gov/centers/langley/news/factsheets/Micro-VG.html

And they give a race car a more aerodynamic shape to cut through the wind (always helpful) and they look bitching to I think.

Check them out and order them here:
http://www.sigmaautomotive.com/performance/vortekz/vortekz.php

And for a lousy $20.00 for the set of 10 why not try them?
 

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If they work, which seems obvious by the research by Mitsubishi and NASA that they do.
Just stupid not to throw a $20.00 set on the roof of your car!!

Why don't more cars in the pits have them on is the question?

Too focused on the engine maybe?

Aerodynamics is always a huge focus on any professional race team.

Maybe it's time VWs think about it too.

Great thread!
 

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Seem to be illegal on NHRA pro cars at least?
Source:http://media.ford.com/newsroom/release_display.cfm?release=25474

"this was taken from a interview with John Force:
I come out of the roof hatch at Richmond and I got hung up on the bolts coming through the roof, so I told my guys, ‘Turn ’em over so I don’t hit ’em going out,’ so they were sticking up. We set the track record that weekend, but we were busted because they said they were vortex generators, that we deliberately turned them upside down to redirect the air, and I said, ‘No way. It was to keep from tearing my fire suit."



Heres a questioned sorta related answered by NHRA pro stock racer Warren Johnson:

Source:http://www.nhra.com/dragster/1999/issue36/speed.html
With all of the fuss about aerodynamics, I have a question that may seem a little wacky. Most of the fish that have evolved in the sea over millions of years have a rough skin texture. Has anyone attempted to produce a rough-textured race car body? I'm told that golf balls have dimples in them for a reason.

Jim Wrytack
Deerfield, Ill.

Jim, you can go to the head of Professor Johnson's class. You've raised an excellent question.

Several years ago, 3M made a "fish scale" coating that was applied to the hulls of several boats competing for the America's Cup. I understand that this coating could indeed increase speed by reducing the friction between the hull and the water.

The rough texture of the "fish scales" worked like millions of miniature vortex generators. A vortex generator creates a boundary layer between the surface of the solid body and the fluid (or air) that is moving around it. You might think of the eddies that are formed by these vortex generators as tiny roller bearings that reduce the friction between the surface and the moving fluid.

Back in the glory days of the Trans Am road racing series in the late 1960s, Roger Penske put vinyl tops on his championship-winning Z/28 Camaros. There was speculation at the time that the rough texture of the vinyl was similar to the dimples on a golf ball. Several years later, it was revealed that the bodies had spent too much time in an acid-dipping tank, and the resulting damage to the roofs was concealed by the application of vinyl tops. Of course, those on the Penske team may have unknowingly improved their race cars' competitive advantage while covering up their indiscretion.

Though I've never seen fish scales or a vinyl top on a Pro Stocker, I have seen contingency decals carefully placed in aerodynamically sensitive areas. Now suppose that you trimmed the edges of the decals with pinking shears to create jagged edges like fish scales. No, that would never work — or would it?
 

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but they are so dang ugly! oh, where on a notchback top would they go? ;D
 

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Discussion Starter #7
vwfye said:
but they are so dang ugly! oh, where on a notchback top would they go? ;D
I agree about the airtab type. They would be good for a trailer to tow better I bet!

The ones on the new mustang look cool!
 

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Brian Watts said:
vwfye said:
but they are so dang ugly! oh, where on a notchback top would they go? ;D
I agree about the airtab type. They would be good for a trailer to tow better I bet!

The ones on the new mustang look cool!
sorry, they look ugly and remind me of the plastic flaps that were on every schucksomatic's wiper arms in the late 80s
 

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Discussion Starter #9
vwfye said:
sorry, they look ugly and remind me of the plastic flaps that were on every schucksomatic's wiper arms in the late 80s
LOL yea they kinda do LOL

But I kinda like them, maybe I am way off? But for a race car especially if it makes you go faster and drive straighter I would have them all over my car. And the research says they work.

I would have the big ugly ones on my race car trailer to save gas with it being over $4.50 a gallon for sure!!
 

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So if I mount these on the back of my Bus, I should be able to increase my top speed from say 65 mph to maybe 68 mph. Oh yeah, send me a set.

I thought this was a thread about an awesome generator that I could take to Bug O Rama and hook up my blender to make smoothies with. Dang it.
 

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Like if the Red Baron or Madson or Crawford was using these and winning, others wouldnt start at least trying them?If it works it works!
 

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Discussion Starter #14
Austin Larsen said:
Only way to get any reliable data is a windtunnel
Agreed

But with all the feedback from NHRA,America'sCup boats, land speed cars that they have spent the millions on the wind tunnel wouldn't mean they work and our little VWs could benefit from them?

I mean at the cost of wind tunnels chances of our cars getting into a wind tunnel is slim I would assume

Just wondering if anyone had tried them

Or hell at least put them on your tow rig to save gas
 

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I know of one old guy that has had them on his car -- we had a long talk about them but he wouldn't admit they helped -- right, knowing him, he doesn't do anything without a reason -- -- lol
 

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My 57 will be getting a set before I head out to Bonneville. Anything that can make the car more stable at high speeds is welcome.

brad
 
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