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Old 11-13-2020, 09:42 AM   #58 (permalink)
kach22i
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Quote:
Originally Posted by JacobLeSann View Post
The box cavity on the Nissan pickup and the van in #55 seems like the sides wouldn’t do much. To me, I’d think air would rush off the side edges before it gets to the sidewalls of the cavity.
If you click on some of the links provided including a link to a semi-truck patent with stepped box cavity you will start to understand this as not so much about attached air flow or even reattached air flow but of tempering re-pressurization after a moving body passes through the air. Call it "filling the hole" if you will.

Quote:
Originally Posted by kach22i View Post
A little more info, some argue that it's about refilling the Aerotemplate- Part-C (or against).

https://ecomodder.com/forum/showthre...nit-33989.html
Several recent treads on this have explained it better than I can despite the personality disputes that colored them.

Do your cardboard and masking/duct tape mock-up, bet you will want those box cavity sides for structural stability.

I would do the bottom of the box cavity only after full belly pan and actually call it a rear diffuser at that point of the game.

If anyone finds a good CFD gif showing how a box cavity works it may do more for intuitive understanding than reading 30 pages of arguments.

I'll see what I can find, but now that you know what Google search terms to use you can feed yourself information to the point of overload.

EDIT: An LED brake light strip all along the ends would look cool and maybe keep people from walking into it in a parking lot.

Stupid people knocked off the mirrors on my S-10 by walking into them.
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You cannot sell aerodynamics in a can............

Last edited by kach22i; 11-13-2020 at 09:55 AM..
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