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Old 05-09-2013, 11:58 PM   #26
Itsawagon37
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Quote:
Originally Posted by Goatcrapp View Post
just throwing this out there, but it's very likely that the wagons produce more downforce in the rear without any sort of spoiler whatsoever. the oem one is really just for looks. increasing the angle will create a ton more drag, and only marginally more downforce.
i can agree with the drag part somewhat, though im not so sure simply being a wagon is making more downforce. I wont get into huge details but check out BMW M coupe in its first year of racing and the rear wing downforce issues it had. but the basic need for a wing on most newer hatch cars is simply for dust control on the rear glass. I can say though that I have noticed improvements more so then hinderances, the biggest is less rain spray on the rear glass when its raining, and highway stability and ability to maintain lane center in turns on the highway(WV rt 79/68) in the mountains even at 85.
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Last edited by Itsawagon37; 05-10-2013 at 12:12 AM.
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Old 05-10-2013, 12:19 AM   #27
Goatcrapp
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Quote:
Originally Posted by Itsawagon37 View Post
i can agree with the drag part somewhat, though im not so sure simply being a wagon is making more downforce. I wont get into huge details but check out BMW M coupe in its first year of racing and the rear wing downforce issues it had. but the basic need for a wing on most newer hatch cars is simply for dust control on the rear glass. I can say though that I have noticed improvements more so then hinderances, the biggest is less rain spray on the rear glass when its raining, and highway stability and ability to maintain lane center in turns on the highway(WV rt 79/68) in the mountains even at 85.
we still get plenty of dust :P

roof rack will break up the air up there, but as a test, try running her without the cross bars and without the oem spoiler. on all the cotton tests i've done over the years on wagons (specifically, sharper rear gate angle than hatch) and the sharp spill off of air from the back creates its own good, usable downforce. Sedans have a trunk which creates an additional plane of travel for the air, and lift (or at the very least unpredictable spill off), but wagons... love me some wagons (not just wrx wagons either. Used to drag a turbo malibu wagon back in the day.. what a tank, and it hooked like nothing else... felt stable all the way down the run, too even at trip digits. I recommend cotton testing, but it's a bit time consuming just for informational use.. very useful for helping you setup for different tracks though.
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Old 05-10-2013, 11:00 AM   #28
Leftear
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I second the dust statement >.<
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Old 05-10-2013, 10:17 PM   #29
Itsawagon37
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you make a good point there, and by cotton testing im guessing youre talking about applying cotton strands or cotton balls to the car to see the airflows effects on it correct? Much like they did in wind tunnels before using smoke.
I just know that from a drivability standpoint I seem to have some improvements. I plan to do some real testing so to speak once I get my week off from work(my job has me out for 7weeks straight) ive got a road I can make multiple runs on at a controlled speed to see how my handling changes are affecting the car.

Last edited by Itsawagon37; 05-10-2013 at 10:35 PM.
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