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Old 03-09-2011, 11:16 AM   #40 (permalink)
Vanquizor
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Join Date: Aug 2009
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still pondering full smooth underbody vs. venturi, but the side skirting is on (28g furnace ducting)




And then I got to work on the fastback... a little 2x2, some painters tape and duct tape...


A little fiberglass, a little bondo...



Add an adjustable spoiler for good measure... CHUMPTASTIC!


The fastback itself sits at an 18 degree angle with respect to the roof, by adjusting the height of the rear spoile I can tweak the effective angle between the roof an the tip of the spoiler from the 18 degree starting point down to as shallow as 12 degrees. Right now the plan is to run the spoiler high an proud, then keep lowering it till we no longer see a measurable increase in speed on the front straight. Any bets on where we'll stop?

I wish I had a rear shot showing the inward taper of the fastback, but at its termination point it is 50% the width of the rear of the vehicle.

Given the work to date- comments? suggestions? Quit cluttering the forum nobody cares about your crap can?
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