Farmergeist said: As a former engineering student, I must say that this pitman arm clamp is one of the dumbest devices I have ever encountered. Even the Egyptians of ancient times could build something better than this.
John Deer should be ashamed of itself.
Before you get too hard on the designers, I suggest you try an exercise:
Come up with your own sickle drive mechanism. Stay within these constraints:
1) Each end of the cutter bar must float independently while operating.
2) Bar can be raised to transport position.
3) Drive mechanism allows some front to rear movement of the cutter bar.
4) Normal maintnance and repair can be done with simple hand tools.
5) Limit the design to technology (metals and machine tools) that was available 100 years ago.
6) Machine still works when 50 or 60 years old.
7) Keep the cost down so a 1930's farmer could afford to buy one.
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Today's Featured Article - The Cletrac General GG and the BF Avery A - A Bit of History - by Mike Ballash. This article is a summary of what I have gathered up from various sources on the Gletrac General GG and the B. F. Avery model A tractors. I am quite sure that most of it is accurate. The General GG was made by the Cleveland Tractor Company (Cletrac) of Cleveland, Ohio. Originally the company was called the Cleveland Motor Plow Company which began in 1912, then the Cleveland Tractor Company (1917) and finally Cletrac.
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