Bed Cover SEMA study

[McRat]

In a wind tunnel:

http://www.trucktestdigest.com/PDFfiles/SEMATonneauStudy2007.pdf

 

[Turbo Buick 6]

Well that proves that having the tailgate down is one of the worst things that you can do

 

[Mike L.]

I doubt you would see any increase in mileage from having a cover and also doubt you would see any top speed increase below 130 mph. I have run my truck with and without and never saw any difference.

 

[Brayden]

But is your measuring instrument calibrated out to two digits like theirs is? I didn't think they made Ass-o-meters that accurate :hello:

 

[McRat]

No, not much of a difference.

If your top speed was 130mph, it would give you 3 more MPH with the best cover they listed.

 

[Mike L.]

But is your measuring instrument calibrated out to two digits like theirs is? I didn't think they made Ass-o-meters that accurate :hello:

Brayden

My ass-o-meter has two digits ( left bun and right bun ); therefore it is accurate enough for this kind of work.

 

[Brayden]

 

[LarryJewell]

I doubt you would see any increase in mileage from having a cover and also doubt you would see any top speed increase below 130 mph. I have run my truck with and without and never saw any difference.

But is your measuring instrument calibrated out to two digits like theirs is? I didn't think they made Ass-o-meters that accurate :hello:

Brayden

My ass-o-meter has two digits ( left bun and right bun ); therefore it is accurate enough for this kind of work.

:hehe::hehe::hehe:

 

[RayMich]

It would be interesting to see some test results with cab-high caps.

 

[Lennart]

Caps will be the best way to lower the Cd.
Here is another study:
http://ecow.engr.wisc.edu/cgi-bin/get/me/363/ghandhi1/pickup.pdf

http://truckgadgets.com/tocfuelair.htm

I read the article from Ortolani and (Kehm) Ewosaku a while back, can`t find it online right now.....