Need Help with HP requirments on a 42" mower


Old 04-17-13, 07:35 AM
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Need Help with HP requirments on a 42" mower

I am building a tow behind mower for my Power King, Gravely tractor. It is a 42" cut mower with swing blades like an IH Cub tractor and is belt driven. Mower will be used for grass and brush cutting. The spindle is a new old stock Woods spindle and requires blade tip speed of 13900 FPM. I am thinking 12-18 HP should work. I am trying to figure out how much HP will be needed to drive this mower before I buy an engine with out enough power to power the mower.

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Old 04-26-13, 02:57 AM
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I should think the horsepower rating your suggest would be in a good range. I would, however, look for a work horse type engine, such as Kohler rather than B&S, or other more common engines. I just think you would get better service.

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