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86% rule

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agco puller

11-02-2001 11:31:03




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I found some interesting technical data in an ASAE technical manual (ag engineer's). The engineer's use what they call an 86% rule to determine a tractor's PTO or belt horsepower. So for instance if an engine is rated at flywheel horsepower as in a combine or stationary power unit simply multiply it's rating by 86%. For example a certain combine carries a 70 hp rating. 70 x .86 would be 60.2 PTO horsepower. ..... cool!

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