Well, if you are worried about strengh, most All thread is Grade 2 which has a yield strength of around 55-57,000 psi. One 1/2 inch bolt has an cross section area of 0.7854 sq inches. One piece of 1/2 inch all thread should hold 43,197 lbs before failure. If you use mild steel all thread, that yield is 33,000 psi. One piece would hold 25,918 lbs before failure. Deere weights usually use 3 bolts so they would hold 38.9 tons.......using mild steel all thread. Using a 4-1 safety factor... they would hold 9 tons of weights. Your 200 lbs? A piece of cake.....
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Today's Featured Article - The Ferguson System Principal An implement cutting through the soil at a certain depth say eight inches requires a certain force or draft to pull it. Obviously that draft will increase if the implement runs deeper than eight inches, and decrease if it runs shallower. Why not use that draft fact to control the depth of work automatically? The draft forces are
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