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Phil White wrote:
This all results in a 'slinging' movement of the rotor, both up and down and sideways, but it is all smoothly circular; no starting and stopping like a piston.
The original point I was trying to make was that just 1/4" lb at 2000RPM would make large forces. Please forgive me for mentioning "reciprocating". I understand that it is a fighting word around here 8*). It isn't reciprocating, it is an off-center spin. But as my washing machine with its weak springs demonstrates, an off-center spin can still shake the house. Washing polyester shirts, instead of cotton jeans, makes the shaking much less.
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