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    the weight of the counter shaft and motor on my...

    the weight of the counter shaft and motor on my lathe is enough to stall a 1/2 hp dc drive in the slow speed, so 500 rpm max iirc. that's 5.4 foot pounds. in reality my motor might be delivering up...
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    But you need the back gear to get the 40 foot...

    But you need the back gear to get the 40 foot pounds of torque needed to drill a 1" diameter hole, at 40 rpm, the slowest back gear speed you can get from the 1/3rd hp motor those lathe shipped with....
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