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Old 10-19-2023, 12:37 PM   #28 (permalink)
aerohead
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' Kamm back?'

Quote:
Originally Posted by razordave View Post
I have been Uber busy fixing mechanical issues along with brain turbulence.

Behold my latest tinkering!

Would this qualify as a Kamm back?

What do you see that I'm missing/ should watch out for in a tuft test?

I have one truss/crossmember/ 1x1 aluminum curved bracket roughly in the middle and plan to add one more toward the rear once I finalize the shape and brackets to attach to the bumper.

The rear fenders still really bother me. I'm trying to source a parts car to harvest the fenders in order to cut them and tuck them in out of the weather..
In order to be a 'K-form' roofline, the extension would have to add to, and respect the amount of roof and plan-view camber already established by Volkswagen, then performing the elongation along a streamlined pathway of slowly diminishing cross-section.
This is what creates the controlled flow deceleration, which is responsible for the pressure recovery, which 'IS' the drag reduction.
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It requires all-compound-curvature ( three-way curves ), the most difficult, and costly, in terms of both time and complication.
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