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Re: Scaling Winch Motor Help
Principles first:
Let's say your task is to lift 150 pounds 36 inches in 5 seconds. The mechanical power required is 150 x 36 / 5 = 1080 inch-pounds per second.
Inch-pounds are converted to Newton-meters by dividing by 8.85, which gives the required mechanical power as 122 Newton-meters per second. This unit is also called a Watt.
122 Watts mechanical output is well within the capability of a CIM motor, so an efficient (low friction) lift mechanism could climb higher than 36 inches, or in less time than 5 seconds, or some combination of the two.
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Richard Wallace
Mentor since 2011 for FRC 3620 Average Joes (St. Joseph, Michigan)
Mentor 2002-10 for FRC 931 Perpetual Chaos (St. Louis, Missouri)
 since 2003
I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, stimulating progress, giving birth to evolution. It is, strictly speaking, a real factor in scientific research.
(Cosmic Religion : With Other Opinions and Aphorisms (1931) by Albert Einstein, p. 97)
Last edited by Richard Wallace : 10-03-2016 at 14:43.
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