In that timeframe, in relation to tractors... I would say the biggest change was power. You went from a tractor that probably topped around 60 HP in 1950 to several models topping 200 in the row crop class and near 800 in the FWD class by that time. Cabs would be the second biggest change, particularly on Deere's part where you went from a 2 lunger with hand clutch and pan seat all the way to a reasonably well designed, ergonomic, comfortable SoundGuard safety cab on the 40 series. Big, big difference there. Transmission technology would probably be a close third with the successful implimentation of the power shift by Deere in the mid 60's... but otherwise gear transmissions didn't change much in that time other than the addition of 2 and 3 speed power shifting. Hydraulic systems also made some major advances in that time frame; again particularly on the part of Deere... but I think really the most advanced and reliable systems didn't come until the early-mid 90's.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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