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Vancouver Auto Chat 2016 VAC Community Head Moderator: Raid3n

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Old 06-25-2010, 07:42 PM   #1
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JDM Aero parts: Do they work? (hint: Voltex)

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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.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...
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Last edited by Jackygor; 06-25-2010 at 07:55 PM.
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Old 06-25-2010, 11:23 PM   #2
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like most things in the world, it works when used correctly.
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Old 06-25-2010, 11:34 PM   #3
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It would be nice if I can understand what they're saying in the video
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Old 06-26-2010, 12:13 AM   #4
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oh yes it works alright

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Old 06-26-2010, 07:34 AM   #5
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thats some transformer shit mang. only the autobots can do that.
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Old 06-26-2010, 06:36 PM   #6
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i have no idea when those ricers started to go wingless on the STI and EVOs....
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Old 06-26-2010, 07:08 PM   #7
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the second video on the first post..

DAMN that evo is FAST.. blows past the FD!
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Old 06-26-2010, 10:25 PM   #8
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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+!
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Old 06-26-2010, 11:52 PM   #9
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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
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Old 06-27-2010, 12:31 AM   #10
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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)
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Old 06-27-2010, 01:51 AM   #11
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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...
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Old 06-27-2010, 09:07 AM   #12
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Damn those are nice CE28N's..
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Old 06-27-2010, 08:32 PM   #13
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Originally Posted by .Renn.Sport View Post
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.
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Old 06-27-2010, 11:19 PM   #14
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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.
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Old 06-28-2010, 12:00 AM   #15
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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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