Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Jeremy Cato writes another article about aerodynamics. Misinformation ensues.

brucepick · 04-23-2009, 11:19 AM

My understanding is, the back end of a car potentially has more effect on the overall c/d than the front (unless you go drastic in front, with a long slope like basjoos). We don't have a really good view of the back but I can see the final cross sectional area is still pretty big. That's what determines the overall size of the wake, correct?

As for the rest - if they really want to drop the c/d, the car needs a full belly pan. But they don't get 'cool' or bling points for that so might not do it. Would be a shame to not treat the underside though; it should be cheap to build and no 'styling' penalty for using an optimum design.

04-23-2009, 11:19 AM	#21 (permalink)
brucepick OCD Master EcoModder Join Date: Dec 2007 Location: Eastern CT, USA Posts: 1,936 Outasight - '00 Honda Insight Team Honda Gen-1 Insights 90 day: 54.18 mpg (US) Thanks: 431 Thanked 396 Times in 264 Posts	My understanding is, the back end of a car potentially has more effect on the overall c/d than the front (unless you go drastic in front, with a long slope like basjoos). We don't have a really good view of the back but I can see the final cross sectional area is still pretty big. That's what determines the overall size of the wake, correct? As for the rest - if they really want to drop the c/d, the car needs a full belly pan. But they don't get 'cool' or bling points for that so might not do it. Would be a shame to not treat the underside though; it should be cheap to build and no 'styling' penalty for using an optimum design. __________________ Coast long and prosper. Driving '00 Honda Insight, acquired Feb 2016.