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Old 09-13-2010, 01:01 PM   #4 (permalink)
IsaacCarlson
eco....something or other
 
Join Date: Jul 2009
Location: Colfax, WI
Posts: 724

wood hauler - '91 Ford F-250
Team Pontiac
90 day: 26.69 mpg (US)

Rav - '06 Toyota Rav4 Base
90 day: 26.52 mpg (US)
Thanks: 39
Thanked 67 Times in 50 Posts
Quote:
Originally Posted by some_other_dave View Post
Yup. With an open differential (most cars have those), you need to spin one wheel twice to get one rotation of the ring gear. So double the numbers you think you "should" be getting, or chop your measurements in half.

-soD
Sorry, should be two revs...LOL You should get the idea now.
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1991 F-250:
4.9L, Mazda 5 speed, 4.10 10.25" rear
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