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Old 12-21-2011, 11:04 PM   #9 (permalink)
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Location: Maynard, MA Eaarth
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Mica Blue - '05 Scion xA RS 2.0
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90 day: 42.48 mpg (US)

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Holy moly Batman! That is some serious data crunching.

How did you determine the Crr? In my coastdown tests using the Instructables spreadsheet, this is the hardest part to get -- it is basically an educated guess?

@drmiller100 -- I suspect you are correct. The aerodynamic drag swamps everything else at a constant speed. And accelerating (from a stop and/or uphill) is huge but if you can limit the time it lasts in proportion to the whole drive time, then it becomes less critical.
Sincerely, Neil
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