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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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horse power, rpm, and torque
At a recent club meeting the following statements were made, and I'm
interested in comments/corrections. It is torque, not horsepower that cuts the wood. I can accept that as torque is a measure of rotational force. With a Reeves drive at low rpm you gain torque over high rpm. This is what I learned riding 10 speed bikes and driving a standard transmission. With electronic variable speed you lose torque at low speeds, this is why the bigger lathes have 3 hp motors, to make up for the lost torque. This one I don't buy, but I don't know if it is right, wrong or partially correct. From posts in rcw, I though with DC motors you lost torque at low speeds, but AC (3 phase) motors maintained torque at low speeds. Any corrections or clarifications to these three statements would be greatly appreciated. Thanks Martin Long Island, New York |