Glad you tufted the leading edge of the hood. Despite the car's "blocky" front end appearance, those relatively small leading edge radii really work to prevent flow separation.
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Originally Posted by christofoo
I'm just polling for (dis)agreement here before I finish this up tonight.
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It seems that an angled airdam that lowers the stagnation point makes sense. Haven't seen any hard data or testing against a simple vertical dam though.
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BTW, the under-body clearance is about 6", so I'm shooting for about 5.5-6" air dam clearance (probably 6" toward the middle and 5.5" toward the wheels). I'd rather err on the high side if I must err.
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Why err high? Do a mockup with cardboard: go aggressively deep (say 3 inch clearance) and compare to 5.5-6 inch clearance.
I went very deep (3 inch clearance) with the air dam mockup I tested on my Firefly which has similar ground clearance to your Corolla. A-B-A coastdown testing seemed to show an improvement. I did not try a shorter version though.
http://ecomodder.com/forum/showthrea...down-9732.html