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°.
