It almost looks like the alum on the attachment and the wicker bill is part of the core? If so that's awesome, way better security then attaching to fabric. I love the design too, pretty much perfect for most classes. Also hows the trunk setup? Weak or strong enough to support or does it have backup?

 

You got it! Yep, the aluminum mounting tabs that stick out the bottom as well as the wicker/gurney flap are built into the wing element. If you wanted taller or adjustable gurney you could drill some holes in the built-in unit and then rivet on a taller wicker. As for the trunk, it is a cheap used mass-produced CF unit that has been modified. All the internal bracing was cut away, then the deck was laid up with 3 extra layers of heavy duty carbon fabric. The deck was slotted and the wing mounts were inserted from the bottom then bonded and riveted to the deck.

 

Sweet man, what'd this one run ya?

 

Nice, we are posting wings up now

I just purchased this not too go along, and with the front splitter I posted earlier, I expect to feel a much more planted car. Here is the data and a few pics. Going to be purchasing a bigger SUV/Truck in a few so I will finally be able to run my front splitter that has just been sitting in my garage.

http://www.kognitiondesign.com/68span.html

 

http://i696.photobucket.com/albums/v...2/IMAG0504.jpg

Working on a hanging system that will support the entire system from the bumper beam. Also there's two layers of alumalite on perpendicular "grains". Three inches of splinter, think it well have any positive effects on cooling aswell ?

 

Here's some research I put together on reputable WING companies. All information pulled directly from their websites.
I picked the one that would probably best fit our cars with normal hp (not 800hp).
Some companies offer a smaller or bigger version or even active aero versions that are 3-5k which I left off.

Kognition
$1299
68" - span
10" - chord
5-18 degrees - Angle Adjustments

APR GTC-300
$1430
67"
11.5" chord

Aeromotions
$1699 - R2 static
65"
10.2" chord
14 degrees - Angle Adjustments
12.5 lbs total weight

DHP Composites
1)2)

 

How come there there is a decent amount of rear airfoil development but no real front airfoil/splitter/diffuser development (besides APR)? The evo is a pretty balanced car, so I would think you need bot to stay neutral.

btw, @211ratsbud, looking forward to see more details on your splitter, I am looking to build myself an alumalite splitter as well.

 

My Evo ST-2 created by Charlie North with Alumalite composite material.









Lots of work left to finish but the basic shape and performance is complete. The APR GTC 200 wing works with the higher extensions. I am satisfied with the downforce we achieved relative to the cost in the ST-2 class. To compete in ST-1 you would need a wide body with 18"x11 wheels, 14" rotors, 480whp, massive wing and larger splitter. Beyond my ability so I am looking forward to racing against the Corvettes in ST-2 this summer with under 350whp.

 

Are you Kidding?? Out of all the splitters available the APR unit has the LEAST amount of development. It is just a flat piece of carbon cut to match the shape of the OEM front bumper. Have you not read this thread at all??

Voltex and DHP pop to mind rather quickly when thinking about who has developed true downforce generating packages for the front of the EVO. . .

And your thinking is right - you need to develop both ends together to keep the car neutral . . .

 

I think what I typed came out wrong. What I meant was there are no real front splitters out there that can just be mounted easily. Apr is crap, I agree, its just a flat piece of carbon fiber. The problem with voltex is it's just a under tray, does not "split" air. DHP does not have a mounting system. Someone should come up with a front splitter diffuser that can be mounted and adjusted easily

 

Love the look of the car! I saw it last year at the last Mid Ohio event as I was leaving. I caught a glimpse of it out of the corner of my eye and was like "what the hell is THAT crazy thing!" I spent about 10 minutes looking all over and around it, but no one was around to talk with. I really like some of the ideas you have going on there, especiall the DTM style side skirts. That's what they remind me of anyway And for some reason the rear diffuser reminds me of a jet fighter plane or maybe a Can Am car or something like that.

A couple questions - how did you come up with the rear diffuser design vs something more standard such as this:



Is your front splitter flat on the bottom or does it have diffuser tunnels along the lines of these:





Here are a couple ideas/observations on the splitter based solely on what I've read (as in - no real world practical testing I've done). The depth of the splitter under the overhang of the front bumper does not gain much downforce, at least compared to that which is gained by the part that sticks out past the front bumper when looking down from above. You may consider having the air dam come down vertically fromt the leading edge of the bumper rather than a few inches under the bumper. Also - any extra bit it can extend forward without scraping or breaking the rules will add some downforce, up to a point. Four to six inches is usually a good place to start.

If allowed by rules - running a 3-d undertray portion to the front splitter will help make much more downforce than just a flat panel. I would guess in the neighborhood of 50% more downforce - maybe more. You get the high pressure on top of the lip sticking out in front of the car, as well as the negative pressure suction under the car from the venturis. . .

Take this all as conjecture - my opinion and understanding and theory. . .

 

Please resize your image - at least on my computer it's stretching the entire thread out.

As far as cooling - it is possbile that with keeping more air from under the car that more will get up and through the IC and Rad. . .

 

OH! I see what you mean. Agreed on the APR, and yes it would be nice if DHP had a standard mounting system so someone can buy a "plug 'n play" splitter - but I think the problem is that people run all different ride heights, bumpers, intercooler setups, subframe braces, exhausts. . .

To come up with a one size fits all mount - it would probably compromize on overall fit and effectiveness compared to if someone were to come up with their own custom setup. . .

If anyone wants detailed pictures and parts write up on how I mounted my DHP splitter/undertray I can do that. It really was not TOO hard with simple hand tools (also helps to have a friend handy with a TIG welder, but not necessary).

As for the Voltex - the undertray that comes with the standard front bumper is NOT truly a splitter as mentioned. However - the RACE version such as on the Cyber Evo is both a splitter and undertray and bumper all in one. It has a complex but solid mount system and a good deal of wind tunnel testing - but also comes with a $$$$$ price tag. . .

 

Yeah if u could post up ur mounting of the dhp splitter that would be great. Trying to figure out my front aero for next year.

Yeah voltex is out of the question, just too much $$$

 

Nice write up man. And which intercooler is that on the white evo.