Re: fast hitch traction control

Posted by dick on February 04, 2001 at 18:52:29 from (199.239.12.58):

In Reply to: fast hitch traction control posted by joe on February 04, 2001 at 16:42:57:

The idea behind traction control is to put more weight on the rear tires by lifting up on the Fast Hitch (and thus the attached implement) when the going gets tough (i.e., when more "pull" is needed to move the implement). The way this is supposed to work is via a force-balance feedback arrangement where the increased demand for pull is sensed mechanically, and the increased downward force is applied automatically via the hitch mechanics; the hydraulic cylinder is not involved in this automatic feedback except as a static element (it doesn't move, but does transmit force just as if it were a solid piece of steel). The hydraulic cylinder's role in this setup is to set the "average" depth of the inplement, and the current depth floats up and down with the amount of pull required - up for more pull, and back down when less is required. I used to do this sort of thing manually with the neighbor's old Ford - raise up on the 3-point when the tires started to spin when pulling a disk or plow, and then put it back down again when the ground got softer.

An interesting, if somewhat mechanically complex idea. Hope my explanation is somewhat coherent and useful. Have seen this described in one of the IH service manuals, and you might get a better idea of how this is supposed to work (with pictures) from that source.

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