Thread: Standard's deployable wing vs. SRT's fixed wing
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Old Mar 4, 2006 | 01:31 PM
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malcb
Joined: May 2005
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From: UK
Default Re: Standard's deployable wing vs. SRT's fixed wing
Originally Posted by pelked1
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A spoiler does more than just provide down force. A spoiler "spoils" the ability of an airfoil shape induced lift from lifting the back of the car. The Crossfire's cab and hatch longitudinal cross-section fairly closely resembles that of an airfoil more than most vehicles, and this is why our beloved Crossfire needs a spoiler.

I believe that the deployable wing on the standard model provides more down force (its angle is deeper than the srt's fixed), but the SRT's wing is wider and therefore spoils more airflow over the rear end than the standard.
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Leaving the aesthetic preferences aside, each to their own, I agree with your conclusion that the effects of the SRT6 are greater than the deployable wing but think the downforce vs. spoiler effect is the other way around.

If the deployable wing is supposed to act like a plane wing in reverse providing down force instead of lift and a steeper attack angle is better - plane wings would look more like our rear wings. Lift or downforce is only generated by the pressure difference on the two sides of the aerofoil section – hence I think the deployable “wing” should be considered primarily to be a spoiler – like the one that pops out of a Porsche which doesn’t look like a wing at all.

With regard to drag – I think you are correct in that, but also worth considering before remodeling just the back end, SRT6 has an different front spoiler, this will affect the airflow over and under the car and alter the lift caused by the shape.
 
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