This is an interesting concept but this hill side tester will always overestimate the stability since the tractor doesn't tip along an axis parallel to the PTO shaft. It actually tips along an axis running from the rear tire contact patch to the front axle oscillation point (wide front tractors) or the front tire contact patch (tricycle tractors). The plumb bob will cross this actual tipping line before it crosses to the outside edge of the rear tire when viewed from the rear since the center of gravity is always ahead of the rear tires. The farther forward the CG is the more discrepancy there will be between the tester and reality.
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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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