Posted by Bill(Wis) on September 14, 2012 at 07:43:39 from (184.75.123.14):
In Reply to: Question........... posted by Goose on September 14, 2012 at 06:36:33:
DeltaRed is correct. "After years of testing" John Deere released its first diesel tractor in 1949, the Model R.It had a live independent PTO, live hydraulics (PowrTrol) and was the most fuel efficient tractor tested up to that date at Nebraska. It had a lot of problems in spite of "years of testing". The engine was basically an upgraded Model D conversion with thermo-siphon cooling (no water pump) which resulted in overheating and cylinder head cracks. It had no center main bearing on the crank and would vibrate when used as a stationary power plant. This was caused by crankshaft flexing and subsequent failure if used in that role a lot. The 2 45degree bevel grears on the PTO were too small and would fail. "The tractor was, however, very good at being a tractor" and was used extensively for pulling large pieces of equipment. Most of its problems were resolved in the following models 80, 820 and 830. Also, reportedly, the R engine had a habit of running backward which was later corrected with a cam mod.
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
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