Not just our first names that are the same, we both have the same sense of curiosity!
"Pto shaft speed must suit the needs of implements (initially grain binders), but should the pto speed be linked to speed of the engine or the tractor drive wheels? Experience in rice states, where the 1925 crop was heavy and traction was poor, demonstrated advantages of linking pto speed to engine speed. Grain binders could run at full speed while the travel speed was reduced to accommodate the heavy crop. The fastest shaft on binders (the pitman drive) ran at 500 to 600 rpm at normal travel speeds.
The 1926 draft standard was adopted by ASAE in April 1927. The pto rotational speed was specified as 536 � 10 rpm; W.L. Zink reported that this speed "seems to work out satisfactorily for all installations known." Thus, it is likely that the choice was a compromise related to the needs of early pto-driven machines.
Acceptance took time. A 1929 study of 35 popular tractors showed pto speeds ranging from 515 to 745 rpm with an average of 549 rpm. Through numerous revisions, the pto speed stayed at 536 rpm as late as 1948. By 1958, when a new 1,000 rpm pto standard was developed, the 536 rpm standard speed had been changed to 540 - 10 rpm. Probably, the speed was simply rounded up to a more convenient value "
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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