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  #111  
Old 11-22-2018, 06:57 PM
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PAPPY:
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In the rear I use a spoiler to lengthen the deck, a wing, and a diffuser. They should work together to both create downforce and smooth and reaccelerate the flowing air to blend with the free airstream behind the car, reducing drag.
Another advantage of the spoiler - it makes a significant increase in the wing's effectiveness. WIG - Wing in Ground.

These from Katz: [Multi-element]


[Single element]



Blown Diffusers: Nice comprehensive article here:
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CF Ducting from below cabin to slit exits skip the exhaust if a concern.

Cheers - Jim
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Last edited by phantomjock; 11-22-2018 at 07:10 PM.. Reason: add link
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  #112  
Old 11-28-2018, 02:52 PM
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Default It's a dirty job --- Duct Work



Here is an idea that looks really well done:


That is on a Porsche 917 - Long Tail. It appears they built these to provide cooling to the transaxle:


The scoops they used on deck were located below the wing:


Nice integration of the ducts to the rear deck shown here:


With a little imagination, you can see how this approach could be reversed to pull air from the high pressure region in the rear wheel wells and dump on the rear deck of the coupe C3s as previously mentioned.


I keep looking at these ideas and continue to "over-think" my C3 bodywork. Ahhh, madness.

Those linkages -- if interest, I'll add details on those too.

Cheers - Jim
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