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-   -   JDM Aero parts: Do they work? (hint: Voltex) (https://www.revscene.net/forums/618350-jdm-aero-parts-do-they-work-hint-voltex.html)

Jackygor 06-25-2010 07:42 PM

JDM Aero parts: Do they work? (hint: Voltex)
 
Quote:

http://www.zerotohundred.com/wp-cont...1fc1af8f3f.jpg

http://www.youtube.com/watch?v=kqjKx...ayer_embedded#

Have you ever been skeptical about JDM aerodynamic add-ons? Like the crazily popular front bumper carnards, splitters, rear wing and diffusers?. The Option magazine network advertisements all claim that these carbon fiber or fiberglass or sometimes plastic winglets things do work to keep your car planted with the effect that Bernoulli creates. Which in car terms, is widely known as downforce.

Though this may seem logical and all, people like you need to see it happening. So here’s an Option video documentary on the Tsukuba Time Attack’s Cyber Evo monster. There’s even a stock comparison near the end where the lack of these air spoilers, actually created the dreaded lift.

http://www.zerotohundred.com/wp-cont...d01878ea97.jpg

http://www.youtube.com/watch?v=YSiNZ...layer_embedded
http://www.zerotohundred.com/2009/au...k-hint-voltex/

hope its not repost

The cyber evo in the above video is the fastest car on tsukuba in its class this year...

toyota86 06-25-2010 11:23 PM

like most things in the world, it works when used correctly.

greendb7 06-25-2010 11:34 PM

It would be nice if I can understand what they're saying in the video

Meister1982 06-26-2010 12:13 AM

oh yes it works alright


josel_atr 06-26-2010 07:34 AM

thats some transformer shit mang. only the autobots can do that.

.Renn.Sport 06-26-2010 06:36 PM

i have no idea when those ricers started to go wingless on the STI and EVOs....

FerrariEnzo 06-26-2010 07:08 PM

the second video on the first post..

DAMN that evo is FAST.. blows past the FD!

Hehe 06-26-2010 10:25 PM

I think the problem is not whether they work or not. The problem is, most of the ricers don't have a car to take advantage of those parts.

Say a GT wing for example, when properly adjusted/placed, a GT wing creates huge amount of downforce. When do you start feeling the downforce? probably not until you hit 170+ for those big GT wing to become effective.

And a Civic can reach 170+, but not a whole lot after that. I'd say a rice'd out civic with no power mods will probably max out around 200... why do you want such downforce? Heck, even a BMW M3/M3 CSL has a tiny low-profile spoiler... and they can reach 300+!

.Renn.Sport 06-26-2010 11:52 PM

the video shows the down force created by the canards and GT wing at around 90km/h

on tracks like tsukuba, no matter how fast the car is, no one is able to reach over 200km/h on the back straight

Raid3n 06-27-2010 12:31 AM

the 3D GT wings work as low as 50-60mph i believe

the effective speed for the downforce bits would be affected most by the rake of the wing (angle of attack)

TOPEC 06-27-2010 01:51 AM

Quote:

Originally Posted by .Renn.Sport (Post 7006664)
i have no idea when those ricers started to go wingless on the STI and EVOs....

i have no idea when faggots like u started to cared about jap cars...

typ. 06-27-2010 09:07 AM

Damn those are nice CE28N's..

Hehe 06-27-2010 08:32 PM

Quote:

Originally Posted by .Renn.Sport (Post 7006914)
the video shows the down force created by the canards and GT wing at around 90km/h

on tracks like tsukuba, no matter how fast the car is, no one is able to reach over 200km/h on the back straight

Yes, but they have the speed to make downforce work for them. The downforce kicks in at 100KMH+ (not just the wing, but whole other aero parts in the same time), how long do those cars take to reach 100kmh? pretty much all within 5 sec if not faster.. they need the downforce because their acceleration is so fast they need ways to stabilize the cars within the limited track length they can accelerate.

A stock Civic needs 9 sec to reach 100KM. By the time the Civic reaches 100KM and downforce kicks in, the track is almost gone and brake comes on to reduce the speed. The GT wing becomes useless.

I'm basing my GT wing to be useful at 170+ because you have better/lighter options before that, making the wings useless. And as an example, supercars with speed-sensitive wings deploys only after reaching 150+. Bugatti Veyron's spoiler deploys when you reach 220KMH... just to show you when wings actually become useful.

And yes, downforce depends on angle of attack, but again, a car don't need downforce at lower speed. Any time before that just make the car slower.

Noizz 06-27-2010 11:19 PM

Quote:

Originally Posted by .Renn.Sport (Post 7006914)
on tracks like tsukuba, no matter how fast the car is, no one is able to reach over 200km/h on the back straight

Are you kidding me?

#1 Garage HRS SUN Auto Cyber Evo CT9A Mitsubishi Lancer Evolution (Best Lap: 55.864sec, Top Speed: 220.678 km/h)

http://en.wikipedia.org/wiki/Tsukuba_Circuit

Tsukuba's back straight is the same length as our track here in Mission. I hit 200 easily on my 600cc bike, I'm sure any GT car could do the same.

.Renn.Sport 06-28-2010 12:00 AM

Quote:

Originally Posted by Hehe (Post 7007695)
Yes, but they have the speed to make downforce work for them. The downforce kicks in at 100KMH+ (not just the wing, but whole other aero parts in the same time), how long do those cars take to reach 100kmh? pretty much all within 5 sec if not faster.. they need the downforce because their acceleration is so fast they need ways to stabilize the cars within the limited track length they can accelerate.

A stock Civic needs 9 sec to reach 100KM. By the time the Civic reaches 100KM and downforce kicks in, the track is almost gone and brake comes on to reduce the speed. The GT wing becomes useless.

I'm basing my GT wing to be useful at 170+ because you have better/lighter options before that, making the wings useless. And as an example, supercars with speed-sensitive wings deploys only after reaching 150+. Bugatti Veyron's spoiler deploys when you reach 220KMH... just to show you when wings actually become useful.

And yes, downforce depends on angle of attack, but again, a car don't need downforce at lower speed. Any time before that just make the car slower.

over half of the corners on Tsukuba are under 70km/h, even the fastest last corner averages at 150km/h max

the use of downforce is to create extra grip around corners without additional weight. if a GT wing only works at 170+, then the Cyber EVO could do a laptime of 55s on Tsukuba without any wings


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