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Old 12-08-2010, 01:29 AM   #12 (permalink)
BamZipPow
T-100 Road Warrior
 
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Location: The Woodlands, TX
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BZP T-100 (2010) - '98 Toyota T-100 ext cab - 3.4L/auto SR5
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Is there any aerodynamic benefit to sloping from the center fer the rear part of the cap? It's doing it naturally because of the lack of support...but should I build it that way or should I put in a support beam to make it straight?

Just did the math with my measurements.

Using this online trig calculator...

Here's how I calculated it...

First calculation:
Opposite = 21"
Adjacent = 78"
Angle (calculated) = 15.07°
Hypotenuse (calculated) = 80.7696"

Since I have it 11" higher...
Opposite = 11"
Angle = 15.07°
Adjacent (calculated) = 40.85"
Hypotenuse (calculated) = 42.3079"

I add the calculated adjacent side to the original to git 118.85" and plug that back in to calculate the actual angle with the 11" rise from the tailgate.

Opposite = 21"
Adjacent = 118.85"
Angle (calculated) = 10.02°
Hypotenuse (calculated) = 120.6953"

If the top ended at the tailgate...the angle would be about 15°. Since I have it up 11" from the tailgate, the angle is about 10°.


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