Harlan Van Gerpen is or was as American as anyone I know. I met him once after he retired and the company I worked for helped connect him with an agricultural tire maker to help design a vehicle load simulator. He had worked on one that Deere used to put a load on tractors for testing. They called them puffers. Tractors that had the engines converted to compressors. The load could vary according to pressure pop off valves and which gear the transmission was in. They had to be ballasted quite heavily, and I think I saw 3 hooked in series to make enough resistance to test large tractors. Harlan was a state senator in the 80's for several years.
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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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