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Old 10-01-2007, 12:22 PM   #1
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A member of another forum posted a horsepower worksheet in a horsepower discussion on another forum. I converted the spreadsheet into a web app to make it easy to play with the numbers.
Horsepower Calculator

It is interesting to see how the different variables affect the horsepower needed to move a mass up a hill. I can not attest to the accuracy of the numbers, as all I did was convert the formulas. There are also some interesting links that are helpful in understanding some of the numbers.


--kev
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Old 10-01-2007, 12:22 PM   #2
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A member of another forum posted a horsepower worksheet in a horsepower discussion on another forum. I converted the spreadsheet into a web app to make it easy to play with the numbers.
Horsepower Calculator

It is interesting to see how the different variables affect the horsepower needed to move a mass up a hill. I can not attest to the accuracy of the numbers, as all I did was convert the formulas. There are also some interesting links that are helpful in understanding some of the numbers.


--kev
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Old 10-01-2007, 01:13 PM   #3
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Interesting worksheet.

It takes more than twice as much additional HP to increase 5 mph from 75 to 80 a it would for the same increase from 45 to 50. It proves why a 5 mph drop in speed from 80 would save more fuel than a similar drop from 50.

HP required to go 70 is 2.1 times that required to go 55 assuming a 5 mph headwind on a flat grade.
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