Draft control uses the amount of pulling force and "suction" of the plow in the ground to control the depth of the plow in the ground. The early 400 had a second cylinder on the front of the hitch attachment point, under the transmission. This cylinder could be used to tilt the fast hitch (over quite a range) and was a fair attempt at a manually controlled (seat of the pants) system. (I like it best of all the 400/450 series hitches. Later 400 and 450 tractors had a draft control with a "D" handle on the left side of the platform that was a next generation fixed amount draft control. It worked OK but was not as sensitive as an internal hydraulic draft control. It worked OK on Farmalls, not so much on Utility style. There is no chance of flipping over backwards with a fast hitch plow because the plow cannot go past its full up position. it could do a wheelie, but not flip. Draft control does not work on trailer type plows on any tractor. Flipping over backwards is very unusual and takes real wrong procedure to do if hooked to a standard drawbar. If hooked to a fast hitch loop drawbar, or 3 point drawbar, in the full up position, a tractor could flip. Jim
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Today's Featured Article - Listening to Your Tractor - by Curtis Von Fange. Years ago there was a TV show about a talking car. Unless you are from another planet, physically or otherwise, I don’t think our internal combustion buddies will talk and tell us their problems. But, on the other hand, there is a secret language that our mechanical companions readily do speak. It is an interesting form of communication that involves all the senses of the listener. In this series we are going to investigate and learn the basic rudimentary skills of understanding this lingo.
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