View Single Post
Old 05-19-2008, 11:43 PM   #1 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
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
Calculated: frontal area of a '95-01 Geo Metro

I finally borrowed a better digital camera than mine and used the zoom photo/Photoshop method of calculating frontal area:



Except the image I was actually working with was 1545x1127 pixels.

My results: 1.81 square meters / 19.45 square feet

This is pretty darn close to the Geo figures of 1.85 m^2 / 20 ft^2 listed here: http://www.mayfco.com/geo.htm (which are uncredited, and tainted by the author's admission that many of the figures on his site are estimates).

Of course I only have one mirror, and much of the time the single mirror is folded flat, so I'll prep a few more variations of A for use in my calculations.

Attached Thumbnails
Click image for larger version

Name:	frontal-area-good-silhouett.gif
Views:	395
Size:	2.2 KB
ID:	763  
__________________
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
  Reply With Quote