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Dyno PTO Horsepower - Super M
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Posted by Jason - Senoia, GA on December 24, 2003 at 20:19:49 from (65.140.134.231):
I hooked my Super M to a PTO dynamometer at a tractor pull this past summer to see how much horsepower it would produce. According to the owner of the machine, the procedure is to run the PTO rpm up past 540, then increase the load on the PTO until the rpm drops to 540. At that point, you read the horsepower. My Super M showed over 50 hp (I can't remember the exact number), but my rpm would only go just over 540 rpm, so there was very little "room" to load it down to 540. The other tractors tested would rev significantly past 540 so that the load could be increased further before they dropped to the rated speed. My tractor is in excellent original condition and runs great. The throttle linkage is not binding or limited, so my question is: How do you adjust the rpm range with the governor? I have never worked on a governor. I did pretty good in the 7000 lb class anyway - I was slightly outpulled by a Super MTA and an M with a corn-picker low gear.
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