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Old 01-15-2008, 03:41 PM   #1 (permalink)
MetroMPG
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Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,527

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Even Fancier Metro - '14 Mitsubishi Mirage top spec
90 day: 70.75 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 62.14 mpg (US)
Thanks: 4,078
Thanked 6,976 Times in 3,612 Posts
Video: tuft testing (rear) 1993 Ford Mustang notchback

This is the style of car:




Note the turbulence over the entire rear window & most of the trunk lid.

The sharp transition & steep angle of the rear glass causes flow to separate at the trailing edge of the roof, with likely little to no reattachment on the trailing end of the trunk lid due to its low height & short length.

This design creates a large turbulent wake.

Foxbody Mustang Aero: Tuft Test @ 70mph (Stock)




Foxbody Mustang Aero: Tuft Test @ 50mph (Stock)



__________________
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
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