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Wicked Awesome Splitter Action

Old Mar 1, 2009, 01:22 AM
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Wicked Awesome Splitter Action

So I've been screwing with aero parts on and off for the past year, slowly adding and improving things. I got an APR splitter last year and only had time to mount it in the stock, lame APR fashion - to the bumper. The angle of attack was +4 degrees and it really didn't stick out that far. Here's a picture of what it looked like when I first mounted it with my original air dam.



I'm planning on building myself a GT wing, and thus I need to be able to balance it out in the front with a legit splitter. So over the past 3 weeks I've been reworking the APR.

This is now the splitter that I've wanted to build for years now. It mounts to ONLY the chassis. It's adjustable while mounted. You can stand on it. It sticks out so far, and is low enough that you better not drive on the street with it. It mounts at the track in 10 mins.

Chassis mounts at the radiator support.




Aluminum reinforcement bonded with aerospace grade 3M DP 460 epoxy.




Hanging from 4 cables, and 5 bolts to the chassis. It's setup to adjust between -2 degrees and zero. A change in spacer blocks can make it go from -4 to -2 degrees as well. But that gets it pretty low at the tip. I'm going to start at the -2 to zero range.



Modified my air dam to be a two piece sliding joint, change the angle of attack and the air dam self adjusts - no taping or adjusting flashing.



Completed splitter off the car. The wood blocks are used as spacers to set the basic angle of attack with respect to the chassis.


Last edited by jid2; Mar 1, 2009 at 01:27 AM.
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Old Mar 1, 2009, 04:10 AM
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Wow

That's taking splitters to a new level
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Old Mar 1, 2009, 06:34 AM
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good job
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Old Mar 1, 2009, 06:37 AM
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mang thats sick!
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Old Mar 1, 2009, 10:27 AM
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Very nice mounting setup. It would be interesting to see how a flat splitter/undertray combo would compare with the Voltex 3-D undertay (no splitter element). I wonder what would make more downforce - the high pressure zone on top of the splitter element (like your setup) or the low pressure zone on the bottom side of a 3-D Voltex or DHP-style undertray. I also wonder which one would have a greater impact on drag. . .
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Old Mar 1, 2009, 12:47 PM
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That is a very nice rework of a one nearly useless APR splitter! I need to get some time to do this as well, now that we have a new road course around.

Evolutionary:
A splitter+ flat bottom will make more downforce than just an undertray. quite a bit actually. Not only do you have forces pressing down on the front of the splitter, but it keeps even more air from entering underneath the car, lowering pressure even more, creating more downforce.
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Old Mar 2, 2009, 09:09 AM
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Nice work!
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Old Mar 2, 2009, 09:20 AM
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GJ!!! Is the APR splitter really that big..wow didn't even know. How far in does it go under?
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Old Mar 2, 2009, 11:23 AM
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That's nice man! Always a huge :thumbsup: to DIY!
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Old Mar 2, 2009, 01:08 PM
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The APR unit is that big???

That is a stock APR unit that you strengthened.

Excellent, as always
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Old Mar 2, 2009, 01:30 PM
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Nice Work!!!

Weren't you working on flat bottom piece's for the car also? All this stuff combined should make a decent improvement in aero efficiency.
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Old Mar 2, 2009, 01:37 PM
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great job there.. Ill be buying APR splitter soon, that is sick there.
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Old Mar 2, 2009, 02:32 PM
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sweetness..... first the 2.3l, now this.... you are on it
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Old Mar 2, 2009, 03:03 PM
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Originally Posted by grillpt View Post
Nice Work!!!

Weren't you working on flat bottom piece's for the car also? All this stuff combined should make a decent improvement in aero efficiency.
Yeah the flat bottom is chillin' in the garage under going updates right now. I'm adding rubber skirts to seal off the edges under the car like the Voltex parts on the Cyber Evo. As well as adding some more jack access points and a wideband access. That way I'll be able to leave the flat bottom on all the time and not need to remove it when tuning/working. I should have had the access panels when I first built the parts but I didn't have time.

Once that's finished I'll move on to a rear diffuser, and then the GT wing.
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Old Mar 2, 2009, 03:06 PM
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i want one...
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