Unless the SM has the optional low speed first gear the 450 has the greatest reduction in first gear by a little. All other reduction gears through transmission and rear end are the same ratio. SM first 19 and 44 teeth = 2.31 ratio. 450 first 21 and 52 teeth = 2.48 ratio. Some SM came with 13 X 38 tires and some 450 with 15.5 X 38 which added to a 450 feeling slower in first.
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Today's Featured Article - Harvestin Hay: The Early Years (Part 2) - by Pat Browning. The summer of 1950 was the start of a new era in farming for our family. I was thirteen, and Kathy (my oldest sister) was seven. At this age, I believed tractor farming was the only way, hot stuff -- and given a chance I probably would have used the tractor, Dad's first, a 1936 Model "A" John Deere, to go bring in the cows! And I think Dad was ready for some automation too. And so it was that we acquired a good, used J. I. Case, wire tie hay baler. In addition to a person to drive th
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