What are these gromets on the EVOs and how can I install them on the roof of my NSX?
- Thread starter BATMANs
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Here's my Top 5 list of what those things on top of the EVO are for:
- They make it look like a sea monster when driven underwater
- Acts as a brake when you roll the car.
- To stop seagulls from perching up there.
- To discourage large trucks from driving over the top of your car (SEVERE TIRE DAMAGE!)
- Could be somethin to do with airflow.... naahh.. :wink:
on the aircraft these are called 'vortex generators' and are installed to energize the boundary layer (increase local turbulence) to decrease the flow separation from the wing. they only work under certain speeds and conditions.
i have no idea if evo sees any benefit from those but if so then it is only to help the airflow over the rear wing.
another bs ricer thing.
i have no idea if evo sees any benefit from those but if so then it is only to help the airflow over the rear wing.
another bs ricer thing.
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vortex generators, believe they only came on the MR before.
They sell them online and at pep boys maybe autozone. Come with double sided tape to stick them on.
Here:
http://www.sigmaautomotive.com/performance/vortekz/vortekz.php
They sell them online and at pep boys maybe autozone. Come with double sided tape to stick them on.
Here:
http://www.sigmaautomotive.com/performance/vortekz/vortekz.php
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Will they help with my spoiler's efficiencies?
There is a functional flow chart showing the use of them (Vortex Generator)
Suppost to function along the lines using the factory Evo wing. Guiding Airflow under the wing.
EDIT: Found it.
http://www.mitsubishi-motors.com/corporate/about_us/technology/review/e/pdf/2004/16E_03.pdf
Suppost to function along the lines using the factory Evo wing. Guiding Airflow under the wing.
EDIT: Found it.
http://www.mitsubishi-motors.com/corporate/about_us/technology/review/e/pdf/2004/16E_03.pdf
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Nice find.
I love the mug shots.
So it's a good thing to have.
Next is how can I have them installed on the NSX in that same spot and have it look like it came from the factory?
I love the mug shots.
So it's a good thing to have.
Next is how can I have them installed on the NSX in that same spot and have it look like it came from the factory?
Looks like Ebay sells these.
http://motors.shop.ebay.com/items/?...506.m270.l1313&_odkw=vortex+generat&_osacat=0
Just a quick photoshop. You'd probably have to get the individual vortex generators.
dont do it.. It wont look right.
Yes, please don't. The Evo doesn't even do it anymore.
Wouldn't make a real difference anyway. The flow over the NSX roof separates at the top of the rear glass, but then reattaches about halfway down. If you drive in the rain, you can see the water droplets speed up when they get out of the area where the flow is not attached.
So really, even the stock wing is in smooth air. A GT style wing shouldn't be affected at all.
So really, even the stock wing is in smooth air. A GT style wing shouldn't be affected at all.
The FQ400 has them on the car.
It is an Evo thing. As you see the Subaru has there roof fin on there models.
The NSX has enough going on, then to incorperate the roof fins.
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It was a gimmick. Its actually used to hide the bolts that hold the aluminum roof panel.
I remember reading a wind tunnel testing on evolutionm once saying how it would help with the down force, though it would technically add more weight because of the extra down force.
I wouldn't do it honestly I know the NSX has been designed well into the aerodynamics department.
If you were doing it solely for look appeal, well to each his own. I however wouldn't do it, but I wouldn't knock you for doing it
I wouldn't do it honestly I know the NSX has been designed well into the aerodynamics department.
If you were doing it solely for look appeal, well to each his own. I however wouldn't do it, but I wouldn't knock you for doing it
I'm going to pull the trigger on these after seeing this thread:
http://ecomodder.com/forum/showthre...z-vortex-generators-2003-jetta-rear-8839.html
http://ecomodder.com/forum/showthre...z-vortex-generators-2003-jetta-rear-8839.html
I remember seeing these on a member's NSX before and I think they were selling them.
I think it was evof575gtc.
I think it was evof575gtc.
IMHO any microscopic gain you'll get in aerodynamics will be offset by the microscopic weight gain of the vortex generators themselves. In other words, buy them for looks only; comparatively you'll impact the performance of your car far more with a good bowl movement.
Here, I found the vendor thread. But the pictures are missing.
http://www.nsxprime.com/forums/showthread.php?t=78679
http://www.nsxprime.com/forums/showthread.php?t=78679
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Yeah, if you read that mitsu technical PDF, it seems to imply the vortex thingies are basically a compensation device for the non-ideal roofline of the EVO (necessitated by the fact that it is a sedan). The NSX isn't compromised by the need for 4 doors and so is already pretty slippery. You'll note that there are no similarly-shaped cars that use these things (Ferraris etc.)
Note Honda Tech article on NSX Aero (2002+ Type R):
http://world.honda.com/NSX/technology/t3.html
Note Honda Tech article on NSX Aero (2002+ Type R):
http://world.honda.com/NSX/technology/t3.html
I think it would look, and taste, much better if you just put the Twizzlers on your car. :wink:
<img src=http://i287.photobucket.com/albums/ll130/biodeez/IMG_1731.jpg>
<img src=http://i287.photobucket.com/albums/ll130/biodeez/IMG_1731.jpg>
I actually saw a report about why they do it. It had CFD analysis in there, I will see if I can dig it up and post it. The theory is that it trips the turbulent bounday and prevents seperation of airflow beind the winow thus reduce drag.
HTH.
HTH.
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