Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - How to improve fuel economy with a tonneau cover

brucepick · 11-02-2011, 05:47 PM

The "simple wing" seems to get decent results as shown, but...

I think the "simple wing" could be improved a bit by angling it down slightly towards the tailgate's top edge. The ideal would be a rounded transition going to maybe a 10-12º angle downwards. But even a straight line panel, about 10-12º downwards, should be better than the straight wing.

And of course combine it with the bed cover for a nice improvement.

11-02-2011, 05:47 PM	#20 (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	The "simple wing" seems to get decent results as shown, but... I think the "simple wing" could be improved a bit by angling it down slightly towards the tailgate's top edge. The ideal would be a rounded transition going to maybe a 10-12º angle downwards. But even a straight line panel, about 10-12º downwards, should be better than the straight wing. And of course combine it with the bed cover for a nice improvement. __________________ Coast long and prosper. Driving '00 Honda Insight, acquired Feb 2016.