Posted by donjr on October 09, 2012 at 09:33:17 from (72.71.177.74):
In Reply to: Re: Tractor Firsts posted by JMS/.MN on October 09, 2012 at 07:17:56:
We have always called that "constant running", because the other units, like MF and Ford, smaller JD's, etc., have a two-stage clutch to engage the PTO before transmitting power to the wheels. But the clutch has to be depressed to engage the PTO, then released part way to start the PTO, as on the MF 65 series. Live PTO to us is one that is totally independant of the clutch, as with IH, JD and most larger units, where the clutch doesn't care whether it in or out to engage the PTO. Direct PTO is what is found on the older tractors- disengage the clutch, engage PTO, re-engage the clutch, and the tractor and the PTO turn at the same time from the one clutch. The first tractors I can remember with real, honest injun, live PTO were the 50 and 60 series JD's and a few IH Supers.
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