Vortex Generators - hopefully a rational discussion.

[ChazInMT]

You FOOL!!!! Now you have gone and put in print "turbine-action axial vortex" out on the web!!! It's just a matter of time before Big Oil finds out and reports to the MNU Division of the TriLateral Commission!! You Have Killed Us ALL!!!

[MGB=MPG]

+_++++Take it offa there, it's not doing anything good, not even keeping the back window clean."""


well you are are full of horse manure because it sure does wipe the rear glass clean on dusty roads ...

its a Fact Jack

[Frank Lee]

http://www.youtube.com/watch?v=oGdlJWfx1GA&NR=1

[euromodder]

Originally Posted by cfg83

That's the same as wheel covers

And some 60% of it, if it's 0,006.

The gain for VGs, however, is indeterminate because you don't really know *where* to put them, unless you are willing to pay for wind-tunnel te$ting and/or commit to a fanta$tic CFD analy$i$.

Wasn't Mitsubishi's main problem getting the vortices to work with the rear wing, rather than simply getting the VG to work ?

That seems to complicate matters a wee bit more ...

[euromodder]

Originally Posted by MGB=MPG

theory is that it directs smooth air from top side to fill *the Vacuum * of the big hole i punch in the air.. thus reducing drag..

But it does so at the cost of increasing drag & area.
These things can work, but in order to do so, they need to be far more elaborately shaped than this crude contraption.


Spoiler Alert: Minivans and SUVs Could Become More Fuel Efficient : TreeHugger


"It should be emphasized how different this spoiler is from those we're accustomed to seeing on performance cars, and the small ones already installed on some SUVs and minivans"

Whats your evaluation of that old top duct on the ford ??

Most likely working against you.
Remove it and see what difference it makes.

[AeroModder]

Originally Posted by dcb

Does anyone have any test data of their own? Or a more concrete plan for how folks can determine if there is a positive MPG effect? What is the plan to get this thread out of unicorn land?

When I get some free time and dry weather lining up together (which is about as hard to find right now as FE results from VGs), I'll be doing some ABA testing with my Aspire. It's a hatchback, so it won't be the same as Mitsu's application, but I haven't noticed a difference other than pretty looking tuft flows since I taped them on.

[kstruve]

I think it's fairly clear that most of us can agree that any effect on FE, either positive or negative is quite negligible. That said, I'm actually considering putting some on my car. I have a WRX and the back window never has air flowing over it and it's annoying. I don't have any "wind" to keep it clear when it gets wet or snowy. I've been looking for something that might help with this problem, plus, I think the delta-wing type look kind of cool!

[Joenavy85]

i got a notification that someone had posted video links, but i'm not sure where it went.

[Pendragon]

Originally Posted by Joenavy85

i got a notification that someone had posted video links, but i'm not sure where it went.

Yea!

I saw the video and even made a brief comment. The video showed results of a run with spoiler, with VGs and stock. As I recall it, the spoiler edged out stock by a slim margin and the VGs trailed. I hope he posts back again.

[MetroMPG]

It's here: http://ecomodder.com/forum/showthrea...ock-16573.html

Figured it would be better if a test wasn't buried in this discussion.