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Originally Posted by freebeard
Since you haven't posted your diffuser yet, I'll throw this out there:
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Saweeeeetttttt!^^^^^^^^^^^^^
I'm glad I don't live out west. There is another form of fast I wouldn't be able to stay away from.
How about some details/more info on that car? Motor? Class? Speed?
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It is a divergent duct. If the top were similarly curved it would mimic half of an exponential horn speaker. Those couple to the ambient air very well
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Do you have more pics of this? I have an image in my head, I'm not sure if I understand 100% though.
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I wonder whether your speed whisker abaft the rear tire does much.
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That's actually my partners car (just sold it). I put a pic of that up because my diffuser isn't 100% done yet but it's a lot like the one we built for him. That car was/is mostly about looking cool. He doesn't drive fast at all. He just likes to fiddle with stuff and see what he can come up with. That said, the car has plenty of "GO". It makes 450/450 to the wheels on 93 and runs like stock. Big brakes, really nice suspension, etc, etc.
I doubt those wiskers/spats behind the tires are doing anything to help. They may even be hurting it.
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I think pulling the underbody air out to the sides would eliminate a lot of wheelwell turbulence.
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Exactly! This is what will be different on the blue car. The bumper cover (which wraps around behind the wheels) is getting trimmed up 4-5" to "exhaust" the rear tires. A lot like that Vette in the pic you posted. The diffuser will come down between the tires.....a lot like the Vette in the picture (I see a trend here).
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Do you think the speed whiskers on the front corners help?
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Partners car again. I think those are a good thing depending on what you're doing with the car. For high speed roadrace stuff (over 100mph) I would wager they will help with front downforce. All the Time Attack cars have them, DTM cars, I'm pretty sure the Ozzy V-8 Supercars do to. Of course throwing them on there willy nilly with no data got have you doing as much harm as good. They look cool and fit the look of that car though.
I've never seen the Polymetal before. I just looked it up. I wouldn't mind getting my hands on some of that. How much does it cost?
The downsides to the honeycomb stuff is that you can't bend it (well, not much). And if you want the edges sealed it takes FOREVER! I sealed all the edges up on my belly pan with really thin aluminum "tape". I almost lost my mind by the time I was done, LOL! Then I sprayed a thin coat of truck bed liner (Home Depot special) to seal it up real good. It tuned out great, but I am no "body man". That kind of work drives me crazy. I'm to OCD for it. I never know when to walk away.
I've never worked with the Alumilite, but some of the roadrace guys I know swear by it. A lot of them make splitters, diffusers, etc out of it.
I'm not a huge fan of aluminum splitters/diffusers though. I spent a lot of years racing......and crashing. I tend to build my stuff to crash. Aluminum panels will bend, but won't break. So they tend to tear stuff up they are attached to. The sintra is real nice for stuff that you may tag a curb (at the track, I don't hit curbs on the road
) like splitters and diffusers because it will flex a bit and then pop back into shape. And if you whack something hard enough to tear stuff up it will just break off. Not take the entire front of the car with it for example.
I do get that planning to crash is not the way most people go about stuff. I'm the kind of guy who plans to crash, and brings enough stuff to fix everything quickly.
Ok, more Vette pics!