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17872Dave! help!

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  • rigmatch
    Dec 2, 2013
      If I had a 300 (real) watt drill motor turning at 150rpm attached to a 1/2" x 10 Acme screw, how much would it lift? If the screw was chain driven to a second, parallel screw, how much would the friction loss in the second screw cut the lifting capability.

      Another crazy invention needs your help!

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