Another Idea For A Bed Treatment - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 13 (permalink) Old 06-23-2011, 01:23 AM Thread Starter
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Another Idea For A Bed Treatment

A sloping bed cover gives good aero drag reduction but they restrict your vision.

Lately, I've been running around with an A.R.E. hard tonneau. Good vision and a lot better aero than an open bed, but not as good aerodynamically as a sloping lid.

Why not approximate a sloped lid with a set of stepped plates?

Check these out.

Tonneau

Two plates no duckbill

Two plates with a duckbill

Three plates and a duckbill

No tires as this is a centerline section.

Whaddaya think?

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post #2 of 13 (permalink) Old 06-24-2011, 12:45 AM
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Re: Another Idea For A Bed Treatment

I am assuming the pink stuff is really bad.

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post #3 of 13 (permalink) Old 06-24-2011, 11:34 PM Thread Starter
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Re: Another Idea For A Bed Treatment

I donít know if the pink stuff is necessarily bad or if it just differentiates itself from the aqua flows. In these sims, the pink stuff is mostly the entrained drag from the machinery under the truck. An air dam will minimize that. I left the air dam off these sims to simplify the run.

What is bad is when the aqua flow detaches from the black surface.

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post #4 of 13 (permalink) Old 09-30-2011, 06:17 AM
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Re: Another Idea For A Bed Treatment

I see the theory, but those animations aren't exactly accurate. An open bed is fairly aerodynamic because of the bubble. The animations are 2D, and dont take into effect the bed space. Notice how the air stops at the top of the bed. I agree how these could help MPGs, but the first video is not representative of actual drag.
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post #5 of 13 (permalink) Old 09-30-2011, 12:25 PM
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Re: Another Idea For A Bed Treatment

Quote:
Originally Posted by Treyspooner65 View Post
I see the theory, but those animations aren't exactly accurate. An open bed is fairly aerodynamic because of the bubble. The animations are 2D, and dont take into effect the bed space. Notice how the air stops at the top of the bed. I agree how these could help MPGs, but the first video is not representative of actual drag.
Not that I know all the ins and outs of aerodynamics but video 1 doesn't include the bed space because, as he said, it has a tonneau cover on it. There would be no bed space.

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post #6 of 13 (permalink) Old 10-02-2011, 06:23 PM
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Re: Another Idea For A Bed Treatment

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Originally Posted by Dave Whitmer View Post
A sloping bed cover gives good aero drag reduction but they restrict your vision.

Why not approximate a sloped lid with a set of stepped plates?
The stepped plates would restrict vision too.

If they were placed horizontally as in the animations, one would only be able to see between the plates. Thus, one would turn around, find the gap to look for, then the vision would be restricted to that area.

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post #7 of 13 (permalink) Old 10-02-2011, 08:14 PM Thread Starter
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Re: Another Idea For A Bed Treatment

The plates are exaggerated for the simulation.

I antipate using maybe 14 ga. aluminum.

The angle can be adjusted a couple degrees for visibility.

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post #8 of 13 (permalink) Old 10-06-2011, 07:31 PM
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Re: Another Idea For A Bed Treatment

Is there any benefit to running no tailgate (without a shell or bed cover)???

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post #9 of 13 (permalink) Old 10-07-2011, 01:35 AM
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Re: Another Idea For A Bed Treatment

Myth busters or snopes ICR proved no

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post #10 of 13 (permalink) Old 10-08-2011, 05:37 PM Thread Starter
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Re: Another Idea For A Bed Treatment

Any number of SAE (Society of Automotive Engineers) papers, based on extensive wind tunnel tests have said no.

"Tailgate down" is the most evergreen fallacy in the pickup world.

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