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Old 01-17-2003, 10:28 AM   #1
MarkZ
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2010 Outback 3.6

Default Aerodynamics effect of skid plate??

Anyone know what the aerodynamic effects of a front skid plate would be??

Would there be more down force, would the car be more 'slippery'??
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Old 01-17-2003, 03:06 PM   #2
Malik
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I think the change would be insignificant - unless you were testing it in a wind tunnel at ultra high speeds. The skid plate would have to cover a substantial portion of the belly and have some aerodynamically designed features before it would result in any meaningful change in drag or provide any downforce. Perhaps not even then.

Malik
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Old 01-17-2003, 04:15 PM   #3
jeffg
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I think I would have to disagree. At least the skid plate I have acts a lot an undertray. I did not have anything like this from the factory, but I can notice a handling difference when I have it installed on the car, especially if it is windy. It actually seems more floaty. May just be the way our square cars handle wind though.

J
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Old 01-17-2003, 05:59 PM   #4
Subie Gal
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Default Re: Aerodynamics effect of skid plate??

Quote:
Originally posted by MarkZ
Anyone know what the aerodynamic effects of a front skid plate would be??

Would there be more down force, would the car be more 'slippery'??
skid plates are designed for protection...

NOT aerodynamics....

cheers
Jamie
www.subiegalracing.com
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Old 01-18-2003, 05:48 PM   #5
MarkZ
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I know what a skid plate's purpose is, I was wondering in there was an aerodymic side effect. I beleive I've seen GT and GTS cars have a flat bottom in front (plus the diffusers in the back) that look a lot like skid plates. That's what made me wonder.
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Old 01-19-2003, 12:49 AM   #6
tmeh
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Quote:
Originally posted by jeffg
It actually seems more floaty.
that kinda scares me... i'm getting one soon. car already floats too much with any crosswind at speed.
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Old 01-19-2003, 01:21 AM   #7
SJwrx
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yeah, these damn AWD cars just lift off the ground

Rich
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Old 01-19-2003, 09:24 AM   #8
tmeh
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my RS gets tossed around on the highway a lot more than the FWD minivan i drive at work does... so i can rip out my rear driveshaft and my car will be more stable at speed? guh.
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Old 01-19-2003, 06:31 PM   #9
Ramsdale
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I have the Primitive front plate, and it's affect on lift or downforce is nil. The plate is pretty wide, but I don't believe it generates any aerodynamic effect that I can feel, even at speed.

True, F1 cars and the like use undertrays, but they run the entire length and width of the car, and have big channels in them, and don't have holes in the middle.

Also, the effects on F1 cars don't show up until very high speeds (150mph plus). Even the Lamborghini Muira, which had a notorious tendency to lift it's front wheels off the ground at it's top speed, wouldn't show any handling issues at 140 - which is where your WRX would be at.

The RS does get tossed around by wind, more than other cars I've driven. (It did this even before I got the plate, and the plate didn't make it worse or better.) I don't know what the rounder WRX is like in the wind, however.

Anyway: The front plate is great for protection. I didn't notice any handling differences due to weight or wind.

Enjoy,
KR
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Old 01-19-2003, 09:49 PM   #10
Frederf
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The design of underbody aeroparts is a very complicated science... I doubt any part installed without this express purpose will have a positive effect on aerodynamics...
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