Thanks to Spiffy 1 for the kind remarks. The note on the variable governor brings to mind what the "non-variable" governor was like. In a word, it didn't really govern unless the throttle was wide open. Moving the throttle lever toward "slow" simply closed the butterly at the carb. I have many, many memories of trying to rake hay with an F-20, using 3d or 4th gear to keep the noise down. Going uphill on part throttle, the engine would simply slow down, and going downhill, it would speed up. The reason for this is that the old-style governor works primarily by having the main governor springs pull the weights together, thus opening the throttle. Centrifugal force, working against the springs, would keep the throttle at the right opening to develop governed speed. This was, in effect, a "pre-calibrated" speed that was determined by the resistance of the springs. There was a slight adjustment via the strange-looking bolt on the back of the governor housing, just in front of the mag. This adjustment provided a slight counter-force to the main springs, as I understand it. The variable governors on these tractors have no springs on the weights. Spring tension is provided by the throttle lever, and the weights work against that tension. Partial tension means partial throttle, but WITH good governing action. A wonderful mechanical advance. It is "interesting" that IHC put a variable governor on the F-12, but did not convert the other F-series, 10-20, W-30, 22-36 and probably others in that line to variable governor until the late 30s, maybe 1937, but in 1938 for sure. There WERE late-model 10-20s with a variable governor. The little lever was replaced with a notched pull-rod, similar to the one on an F-12 and late model F-20. Have seen pictures of these in brochures, but can't put a date on them.
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Today's Featured Article - A Lifetime of David Brown - by Samuel Kennedy. I was born in 1950 and reared on my family’s 100 acre farm. It was a fairly typical Northern Ireland farm where the main enterprise was dairying but some pigs, poultry and sheep were also kept. Potatoes were grown for sale and oats were grown to be used for cattle and horse feeding. Up to about 1958 the dairy cows were fed hay with some turnips and after that grass silage was the main winter feed. That same year was the last in which flax was grown on the farm. Flax provided the fibre which w
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