View Single Post
Old 01-12-2008, 12:10 AM   #4 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,451

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

MPGiata - '90 Mazda Miata
90 day: 55.97 mpg (US)

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

Appliance car - '14 Mitsubishi Mirage ES (base)
90 day: 67.41 mpg (US)
Thanks: 3,983
Thanked 6,874 Times in 3,565 Posts
The gear ratios are all the same for these cars - only the final drive is different.
5th is 0.757
Final drives:
4.39 - 1.0L garden variety (1995 and up), 13 inch wheels
4.105 - 1.0L garden variety (1989-1994), 12 inch wheels
3.79 - 1.0L XFi (1989-1994), w/12 inch wheels
3.523 - 1.3L SOHC (1989-1994), w/13 inch wheels
So multiply 0.757 by each of those final drive numbers, and that's how many times the crankshaft will rotate for one full revolution of the wheel.

EG. 4.39 * 0.757 = 3.323 crank revolutions per wheel rev.
__________________
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