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Android Users - Coming Soon! - Migrating from aCar 4.8 to 5.0

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Old 02-08-2007, 06:39 AM   #1
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Magazine article

Anyone interested in aero should go pick up a copy of the March 2007 "Hot Rod" magazine. (wait, March? Yeah, the mag industry has a wierd calendar)

Not the usual reading for guys here, but turn to page 112 and they have a nice article on wind tunnel testing a car for racing at Bonneville. They took a Camaro from a .497 Cd to .201 with some aero tricks! Definately worth a read, IMO.
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Old 02-08-2007, 07:19 AM   #2
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Anyone interested in aero should go pick up a copy of the March 2007 "Hot Rod" magazine. (wait, March? Yeah, the mag industry has a wierd calendar)

Not the usual reading for guys here, but turn to page 112 and they have a nice article on wind tunnel testing a car for racing at Bonneville. They took a Camaro from a .497 Cd to .201 with some aero tricks! Definately worth a read, IMO.
Whoa... that sounds awesome. I think i'll pick that up later.
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Old 02-08-2007, 07:45 AM   #3
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It be great if someone could scan that article and post it up here.
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controversy is an idea thought up by weak people who are too afraid to hear the truth.
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Old 02-08-2007, 08:14 AM   #4
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Is this it?

http://www.hotrod.com/techarticles/h...o_tricks_tips/
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Old 02-08-2007, 08:48 AM   #5
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NIIICE!

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Old 02-08-2007, 09:43 AM   #6
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it sounds like i need to buy that jdm or edm spoiler for my crx now
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Old 02-08-2007, 01:09 PM   #7
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I can't find that camaro.
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Old 02-08-2007, 03:48 PM   #8
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Fender Air Pockets

In the article, there's mention of relieving air pressure in the fender wells. Some models have "brake cooling" tendencies with flow into the well, but I wonder if letting air flow out the rear of the area would provide a better overall flow of the vehicle?

Salt/Sand and grime may be harsh on the body or frame, but I'm thinking about how a notch or hole in the often-plastic shield behind the tire would help with improving air-flow. Maybe something that runs the air out and perhaps down under the car. That is, unless you have the area covered Maybe the front wheel wells could benefit most...

RH77

EDIT: Excellent article, BTW (as I read it again)...
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Old 02-08-2007, 11:52 PM   #9
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No, they don't tend to put the newer articles online (have to make money somehow). The article I read they were actually testing cars in a wind tunnel.

Regarding flow in the fender wells, alot of fendered race cars have vents in the top of the fender to let out pressure. Not sure how it affects drag, but it can probably reduce front end lift. The front wheels seem to be terrible for aerodynamics no matter how you cut it. Pressure in the wheel well, turbulence, disrupted flow... I wonder what effect front fender skirts have on lift tendencies? They might trap in pressure, but might also reduce flow through the area and encourage it to go elsewhere?
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Old 02-09-2007, 05:18 AM   #10
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3" by 2" Lip

On some newer cars, I've noticed a small lip extension (about 3-4" wide and 2" tall) just before both the front and rear wheels on the Kia Spectra, Prius, and TSX (I'm sure more have them).

I searched but couldn't find a pic -- I may have to get under the TSX to snap some shots myself.

They often have cut corners similar to a half-octagon shape. IIRC, this also helps with directing flow around the wheels (not sure about the exact rationale )

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