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Old 09-08-2011, 09:40 PM   #21
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love it! looks great. i used all the same materials except for the abs sheet. my buddy made it out of aluminum. How is it handling without a wing. did your car understeer alot before you added the splitter? If i even flatten the angle of my wing a little, the back end gets loose and slides all over the place.
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Old 09-08-2011, 09:42 PM   #22
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Looks Great.
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Old 09-08-2011, 09:51 PM   #23
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Quote:
Originally Posted by y8s View Post
bring out the gimp.
Zed is dead
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Old 09-09-2011, 04:48 AM   #24
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Looks real similar to the one I built for Spoolin's car last winter. This is going to be the new trend on the track cars. Waiting for someone to angle it forward like a wedge, following the angle off the top part of the bumper.


Because racecar
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Old 09-09-2011, 07:59 AM   #25
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Make the front and rear longer and pointier, add a Fastback HT:




Making the front (including the splitter) longer (1 foot or so) will give a lot higher probability for curb interaction (and aerodynamic pitch pumping).
But why not try, it's just plywood, alu and plastic sheets.
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Old 09-09-2011, 01:05 PM   #26
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Originally Posted by Techsalvager View Post
how much did that ABS slab run you?
I was able to find 8x4 sheets of 1/4" ABS locally for $35 and 1/2" for $75. just to give you a ball park.
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Old 09-12-2011, 11:44 AM   #27
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I really, really like this splitter/bumper. Very nice work. Cheap, looks good considering, and most of all functional. Awesome.

Quote:
I think I'm going to make a frame around the radiator with aluminum angle iron, rivet the flashing to the frame, and seal the frame against the radiator with weather stripping. That will have the added benefit of making the ducting and/or radiator removable without re-doing a tape job every time.
Excellent idea. This guy who is local to me did the same sort of thing on his track Miata (V8 conversion). Look down towards the bottom of the thread.
http://forum.miata.net/vb/showthread.php?t=424672

My splitter is very similar to yours except for the vertical air dam. I considered that approach once before and chickened out. But now that I have seen it, I REALLY want to do it now. It looks like it takes care of covering up the front tires when viewed from the front. Can you post a front-on picture? It also looks like adding cutouts for things like brake ducting and tow hooks would be easy.

I would not worry about the Home Depot hardware unless you just want to upgrade it for looks. I have been using the same stuff for the front braces on mine and it works great. Track tested, no problems.

+1 on getting ABS from a local sign shop. That is what I do.

Alumalite would be nice but I am sticking with birch for my splitter so that when it is inevitably damaged the replacement material will be cheap and readily available.

MORE PICTURES!

Last edited by ZX-Tex; 09-12-2011 at 11:57 AM.
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Old 09-12-2011, 11:53 AM   #28
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I installed a new radiator and re-did the ducting with AL angle iron and weather stripping which worked perfectly.

The air dam covers most of the tires, an inch or so still sticks out with 225 A6's on 15x9 6UL's. To get them completely covered I'd need flare out the fender where the top of the air damn mounts.

more pics coming soon
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Old 09-12-2011, 12:11 PM   #29
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Another option for filling that gap between splitter and nose is trimming down a stock car nose....that's what I did here. They are cheap/durable...and a little more aerodynamic. Two different versions, first was more aesthetically pleasing but second was VERY effective.

The splitter on the first was sheet almuninum, the second was 1/2 birch with single layer of glass top/bottom. Very cheap and DIY. And most important easily reproduced because you will lose it! Well, at least if racing anyway.
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Home made splitter/air dam/ducting-cobra3.jpg   Home made splitter/air dam/ducting-ryanlogan27.jpg  
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Old 09-12-2011, 12:38 PM   #30
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Both look good. I like how you used the curve of the nose to blend it to your car.

Speaking of losing the splitter, I'll be racing the 50th Annual Weatherly hill climb next weekend...which includes a jump! I'm sure it will destroy the splitter, and I can't wait!
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Old 09-17-2011, 08:59 PM   #31
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You could add some temporary spacers to raise up the bump stops.
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Old 11-09-2011, 02:57 PM   #32
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FWIW I am about to do this on my 1994 LS1 track Miata. I have everything I need in hand so I just need to do it.
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