Quote:
Originally Posted by jimhs
I would remove the roof rack rails if I don’t use them rather than spending $
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Do you mean the cross bars in the 2nd and 3rd pictures? Or the longitudinal rails? I've been driving without crossbars for as long as I had this Jeep, the cross bars only go on when I need to carry things.
Quote:
Originally Posted by aerohead
* The wing is forcing air over the roof to blow over the backlight, hopefully keeping some of the road spray from reaching the glass.
* In the past, measurements showed only drag 'increase' with such devices.
* The wing itself adds frontal area.
* And the wing has its own drag.
* To reduce drag, you'd blend a roof extension out as far as you dared, which included side extensions to box in that area, all the while providing a slight cross-sectional reduction along a streamlined path, generating pressure recovery. The only thing aerodynamics is about.
* You might take a look at the 1987 Renault Vesta-II concept, or Mercedes-Benz' Bionic Boxfish concept. The back of these two 'squarebacks' would be the gold-standard for streamlining.
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Understood, thank you very much for the details. I've got a spoiler off a first generation Cayenne which is fairly long, time to see how I can fit it, since I stashed it away hoping the jeep factory deflector would help.