[gumby79]

Am I understanding correct?
1)
If there's no change in frontal aera the a-b comparison will both be skued the same amount? Making the % of change an acaccurate a-b test. But the actual CdA # would be illegitimate.

Eg. Leave the Headache Rack on for ab cap test (the red part ) because it adds 15*2" of surface. 114*2" aera.79*2'
This shot is from a slightly elevated angle making the increase look larger. The lower bar is below the cab . Ecept in the center its 1/2"T ×6" W above. With ~ 7°pinch for & aft . The 3"W ×1/8"T is dead flat to the air.

The plan is for this to have an air curtain affect. To settle the disturbance from the cab/ cap gap. A less functional more aerodynamic design,has been suggested by many people , would be to eliminate this cab protection feature.

2)the Dodge advertised CdA (have you beenable to locate one yet?not me )compaired to the DARCO naked. Would this yield a value to the amount of skue?
I think the anwser is :
A) there is a variant from tunnel to tunnel so not comparable


3)
The removal of the headache rack (red part ) would alter the %of blockage resulting in a different skue ? A naked test could not be compaired to a headache rack test(different Aera/skue)?