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Old 01-24-2012, 12:34 PM   #62 (permalink)
drmiller100
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Ummm, No.

There are two primary factors affecting how much horsepower it takes to move down the road. Rolling resistance, and Wind resistance.

Rolling resistance can be calculated within 10 percent if you merely know the weight of the vehicle - the rolling resistance is turned to heat and lost, and the rolling resistance is linear in relation to weight.

Heavier is ALWAYS bad except in a windstorm.
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