Quote:
Originally Posted by brucepick
Thanks Frank. I think you're saying the rear edge of spoiler should meet the aero template line? I'm thinking, if it extends beyond that line (which represents a curved plane) that would be detrimental? And of course if it doesn't extend to meet the line, it doesn't intersect.
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This is just my opinion, but the "aero template" calls for a device that is rather larger than what I believe is being discussed here and certainly larger than the ones used in the 200 + MPH Bonneville cars.
The idea is also somewhat different in that these extensions are being used to move the separation point further to the rear and attempt to provide a more orderly transition than is typical of rounded surfaces on the rear of cars done created by stylists.
Airflow under the car was also addressed on the Bonneville cars. They had full length belly pans and one of them had the rear of the belly pan angled up with strakes not entirely dissimilar to those used on F1 and other race cars to provide some downforce and move air into the "hole in the air" made by the car.
Anyway, I think it impractical to attempt to fabricate an extension which actually intersects the "aero template". Besides, there is nothing which demonstrates that the particular "aero template" shown in the forums is any more accurate than any other.