View Single Post
Old 04-05-2008, 12:23 AM   #2 (permalink)
LostCause's Avatar
Join Date: Feb 2008
Location: California
Posts: 504

Thunderbird - '96 Ford Thunderbird
90 day: 27.75 mpg (US)
Thanks: 0
Thanked 7 Times in 7 Posts
Generally, you want the kammback to angle downwards to decrease the size of the separation bubble forming behind the car. I'd create a sloping kammback that extends as far back as rear-view vision will allow. The length of the rear canted glass creates an excellent opportunity to form a large fairing.

Those spoilers shown will not serve to decrease the trailing wake, but will partially kill lift instead. Your car experiences induced drag, which can be fairly significant. By killing the lift you lower induced drag and potentially improve mileage. I doubt the gains would be as beneficial as a true kammback, though.

- LostCause
  Reply With Quote