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Old 07-21-2010, 09:40 AM   #2 (permalink)
RobertSmalls
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Well, the amount of energy you'll spend hauling that around, excluding braking, is:
distance driven * CRR * 9.81m/sē * mass
divided by the efficiency at which you can produce power.

Then double it to account for braking. Then figure adding weight causes you to downshift and produce power less efficiently.

I figure you're looking at about 10gal/yr per 100lbs.
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