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Canadian Daves JustKDX
What does more teeth on back sprocket do for me?
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[QUOTE="reepicheep, post: 1361761, member: 104942"] A 2x4 nailed to a tree and sticking out 10 feet, with a 10 pound bucket of water hanging from the end, is producing 100 foot pounds of torque, and zero horsepower, and doing zero work. Torque is force, which until it moves, isn't work. Torque over distance is work (horsepower). The speed (RPM) you can sustain while maintaining X amount of torque is determined by the horsepower available. I can easily gear a dremel tool to make 100 foot pounds of torque... at insanely low output RPM's. I can't ever make a dremel tool make 100 horsepower. Those motors that rotate entire restaurants (or building sized satellite dishes) are fairly low horsepower, maybe 10 or 15 HP. But they are geared for insanely high torque... but move at very low speeds. I agree that gearing isn't the thing that changes horsepower. At a given RPM, a motor will always be producing the same horsepower. However, gearing *can* change RPM for the task at hand, and if you can re-gear such that you are at a higher RPM for a given problem, you are reconfiguring your motor to make more power for the problem at hand. The rub of course is that you eventually run out of RPM's... (Edit, took out a statement about force being "potential energy", because, well, it was wrong). [/QUOTE]
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Dirt Bike Discussions By Brand
Canadian Daves JustKDX
What does more teeth on back sprocket do for me?
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