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Permalink Reply by Joseph-Ohio on January 7, 2014 at 6:39am

Thanks Brian,

In the meantime I found a formula on line to convert torque ft.-lb.(considering rpm) to horsepower.

(ft.-lb.) x (torque rpm) / 5252 = horsepower

So (for the top drive) I'm finding (50,400 ft.-lb.) x (120 low gear rpm)  / 5252 = 1151.56 horsepower (in low gear).

Sound about right ?

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Permalink Reply by Brian Powers on January 7, 2014 at 6:54am

J-O

Sounds about right to me. Lots of moving iron, noise and vibration on those rigs, not for the faint of heart!

Brian

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