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Old 02-01-2010, 09:04 AM   This thread is in the EcoModder Project Library | #1 (permalink)
Bow
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Fred - '98 Nissan Frontier XE
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Partial Bed Cover- '98 Frontier

Well, I decided it was time to try something else, and best of all, I got the time to do it...

What better to do on a Sunday morning in 45 degree weather?

I sourced the wood and built a partial bed cover for the truck.

4 - 1x12x4 white pine
1 - 1x10x8 white pine
1 - 2x2x8 pine

My bed is 54.75" wide at the rails
1x12 boards are NOT 12" wide!
1x10 boards are NOT 10" wide!

However, if you place 4 of the 1x12s and 1 of the 1x10s side by side, you get 54.375 (54 3/8) wide...

I have a 6' bed, so 4' long is plenty... and it is currently recessed into the bed about 3/8"

Here it is...







The Best part?
The first run to work this morning gained me 3 MPG Avg... 27.1! and in 37 degree weather!!

It cost me about $35 for materials...

Now I'm thinking about a belly pan...

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Old 02-01-2010, 09:30 AM   #2 (permalink)
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3mpg may have been a fluke, but looks good none the less.
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Old 02-01-2010, 09:36 AM   #3 (permalink)
Bow
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Fred - '98 Nissan Frontier XE
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Maybe so, I'll find out tomorrow on the way into work...

I do know that the truck doesn't drag from 40-50 MPH like it did before.
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Old 02-01-2010, 10:47 AM   #4 (permalink)
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Quote:
Originally Posted by Bow View Post
Maybe so, I'll find out tomorrow on the way into work...

I do know that the truck doesn't drag from 40-50 MPH like it did before.
How long is the bed?
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Old 02-01-2010, 12:27 PM   #5 (permalink)
Bow
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Fred - '98 Nissan Frontier XE
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6'
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Old 02-01-2010, 02:21 PM   #6 (permalink)
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7%

I think GM inferred that a 1/2-tonneau was good for about a 7% mpg improvement at standard conditions.
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Old 02-01-2010, 02:53 PM   #7 (permalink)
Bow
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Fred - '98 Nissan Frontier XE
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Thanks Phil!

If nothing else, it is a base for my future aerocap...
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Old 02-01-2010, 03:21 PM   #8 (permalink)
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Hey, Bow, I think it looks great! Far and away the best bang for the buck you're gonna get. Keep in mind too people, Bow has a big ol carry box back there too, that's gotta count for something, I'd say he has 4/5's of a tonneau.

Wanted to check this out so I made some Flow Illustrators of the build and the results impress me. For fun I put on an areocap too.





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Old 02-01-2010, 03:27 PM   #9 (permalink)
Bow
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Fred - '98 Nissan Frontier XE
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Thanks Chaz...

I think I need to figure out a Cab extension/wing next... that should be quick and easy... (famous last words... )
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Old 02-01-2010, 03:43 PM   #10 (permalink)
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Nice work on the 2/3 tonneau cover. A 2/3 cover is not much better than a full tonneau. Took this from Aerohead's photo album:

The carry box is probably not helping the FE that much since the weight of it is probably offsetting any aero gain.

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