Racing parts are more for down force than low drag.

Low drag is about disturbing the air as little as possible and hopefully not introducing any lift.

For an interesting taste of what could go wrong, the first year Audi TTs had all kinds of aerodynamic features, turns out in the right conditions they get air up under them and the whole car goes out from under you. They had a recall after some famous race driver lost his life on the back roads in the uk. They added stiffer springs and that little lip spoiler.

Chris

 

performance nissan sponsors a few grand am racing cars.

as for hondas, the first company i ever heard of that wind tunnel tested their kits was mugen. from what i know about aerodynamics though C-West seems like it would be a good piece.

 

smell this

http://www.c-west.co.jp/labs/evo212.html

 

Yeah, cuz most people that I deal with are racing teams or engineers that want to win the race, instead of slap anything or any parts on their car.

I guess you never deal with serious racing team before, or pay attention to real professional racing. If your statment is true, how come we never see Wing west kit, or Kamnari kits on JGTC, BTCC, DTM, Le Man or WRC race cars.

Racing team I refered to are company like Calsonic, AVEX Dome, Endless, Taitec, CUSCO.....etc. Teams that racing in JGTC, Super Taikyu, and time attack. Where split second counts.

Gran AM series are small potatoes when compare to above metioned. JGTC are coming to US at Dec 18, and 19 this year in California speedway, I suggest you should go check it out.

And yeah smell the website that post by Topsecret2001.

 

http://www.c-west.co.jp/labs/fudo_rx7.html


There is some windtunnel data from C-West for the FD N1 kit.

Other than Mugen, I am not aware of any other Japanese Aftermarket manufacturer that actively uses wind tunnel testing in its designs, but most use track times (circuit testing)

 

to REDUCE drag. Vlad is basically right None of the kits out there will reduce overall drag. They increase frontal area and when you do that, you increase drag. Proper airflow management is a science. The aero kits are designed for looks mostly and or managing airflow to a desired effect like achieving X pounds of downforce in a given area at a certain speed. Frankly all the kit companies know how to sell to you. If you sincerely want to reduce drag, knock the mirrors off, put skinny tires on it. And get under the car and begin fitting dimpled panels over open areas to smooth airflow. That's where DRAG lives.

 

Originally posted by kzshin
I guess you never deal with serious racing team before, or pay attention to real professional racing. If your statment is true, how come we never see Wing west kit, or Kamnari kits on JGTC, BTCC, DTM, Le Man or WRC race cars.


I was exactly talking about serious racing when mentioned Nismo in Grand Am cup. I was there I saw it, I touched it. I saw Z getting 1,2,7,10 out of 48 cars in Ohio.I'm not aware of JGTC, Super Taikyu, and time attack. What channel I can see it on?

My statement still stands that most kits probably not screwing things too badly, so good driver doesn't care what front bumper is on the car as long as team got sponsor money. And no, it wan't go in serious races like LeMans, that's why you won't see that custom-import-tuning ugly kits in LeMans. Not that Z is in LeMans anyway. Did you watched LeMans this year by the way? I did, all 24 hours.


And yeah smell the website that post by Topsecret2001.

I was hoping it suppose to contain C-West aerodynamic data... Like downforce data etc... It has speed instead. Which can be greatly manipulated. Especially coming from manufacturers website. But okay, let's believe it's true data. Great. That makes 2 kits out of 100 worthy. Why do people buy the rest of the kits?

 

Why "air temp-intake" is different? did they do tests on different days? You can't lower temp 10C by adding fancy bumper. At speed it'll be close to outside temp, no matter what bumber is there.

 

And once you mentioned it...

After close look to the kit you reffer too, I think it's a perfect example of my point. I.e. kits are about looks.

Look at the scoops I circled in red. What exactly are they function. As we can see from the other pictures from that link, they just open to water tank and some other internals in Evo's front.

They are TERRIBLE for aerodynamics. I don't have a degree in aerodynamics, but fallowing F1 for many years, I can say that things like that create huge turbulence = increase coefficient of drag tremendously.

And they don't create any downforce, since for part to create downforce, air should flow around it. So they don't have function, bad for aerodynamics, and innesential for downforce. But they look cool.

Perfect example of look-is-our-goal approach. If they'd care to get maximum performance, the'd smooth the area but leave those huge lips on the corners. But then it won't sell so good.

Thanks for providing example.

 

nothing to say about the wind tunnel tested RX-7?

and i cant believe you think aerodynamics dont matter much in racing? they are one of the most important things...

 

just look at his suspension setup....he's setup for understeer....


Vlad, that link i posted has plenty of info to show that body kits can be functional performance enhancements. Besides adding downforce and smoothing air-flow, they may contain air ducts to help reduce engine bay temps. Your arguement that "You can't lower temp 10C by adding fancy bumper. At speed it'll be close to outside temp, no matter what bumber is there." is defunct. The data is there. Attack it how you will but it's more information than you've provided. Your arguements are mostly baseless accusations with nothing to back them up.

 

you're not going to see many if any of the japaneese series on tv in america; speed channel did show the jgtc last year, but i haven't seen it on this year at all. just because you haven't heard of it, doesn't mean it's not serious racing ... jgtc will be @ Fontana on Dec 18/19.

american tv doesn't air alot of the big racing series in europe and japan, it's a shame because they're so much more entertaining that the nascar, cart, and irl crap we have in the states.

 

im starting to get this thread confused with the fake bodykits thread...

 

I know for a fact that Varis does the same testing as C-West and focuses more on performance than looks with their Aero Parts.

Just some more info to back it up.....

VARIS - Mitsubishi Lancer EVO Side Diffusers

Varis has developed a new concept aero part downforce It is simple, yet very effective air channeling technique. The undersides of each side diffuser channel air from directly behind the front wheels all the way back to a point before the rear wheels were it exits to each side of the vehicle. This technique not only gives the vehicle some much needed downforce, it also reduces drag by smoothing the airflow underneath the vehicle.