Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - BMW e36 318 tds

MetroMPG · 05-01-2012, 02:59 PM

tjts - Unfortunately, you can't make that assertion without knowing whether flow reattaches on the stubby "decklid" portion of the hatchback.

If flow separates at/near the top of the rear window, and does NOT reattach downstream, then a properly designed "batman thing" will definitely help.

I think the profile of the rear of the car falls well outside of the optimum. My money's on Batman to the rescue.

05-01-2012, 02:59 PM	#15 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,534 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 57.73 mpg (US) Thanks: 4,082 Thanked 6,979 Times in 3,614 Posts	tjts - Unfortunately, you can't make that assertion without knowing whether flow reattaches on the stubby "decklid" portion of the hatchback. If flow separates at/near the top of the rear window, and does NOT reattach downstream, then a properly designed "batman thing" will definitely help. I think the profile of the rear of the car falls well outside of the optimum. My money's on Batman to the rescue. __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget