I need to design a system to allow a person to continue winding a conveyor by hand in the case of an electricity power cut so need to know a power output to calculate the optimum gearing required. It would also be usefull to know what the optimum height for mounting the handle should be.
2006-07-27 04:16:18 · 4 answers · asked by Anonymous in Science & Mathematics ➔ Biology
At some point in my distant past, I remember hearing that a human can initialize 2 horsepower at any one time for a short period (a few minutes), but 0.5 horsepower can be maintained over a period of hours.
Optimum height is slightly above waist height, so that the arms are slightly above the relaxed position, but still positioned at a downward angle in order place the person's weight behind the winding. And with minimal bending over (back problems result).
2006-07-27 06:18:01 · answer #1 · answered by interested 2 · 1⤊ 0⤋
couldn't give you a power output I'm afraid - but when designing the device, why not make it pedal powered rather than hand operated? This would give a much higher potential output, maintainable for a longer period and also leave the hands free for operating the tv remote in case you generate enough power to run the tv!!!!!!
2006-07-28 03:39:24 · answer #2 · answered by pyronaught2000 2 · 0⤊ 0⤋
I wouldn't bother if I were you. The energy required to replace electricity during a power cut would be quite a lot. That is if we are talking about running a house.
I don't think a human could possibly achieve it. Let alone maintain it.
2006-07-27 11:21:46 · answer #3 · answered by JeffE 6 · 0⤊ 0⤋
the amount of power output depends on the handle and the weight on the end
2006-07-27 11:20:21 · answer #4 · answered by Matthew C 1 · 0⤊ 0⤋