Posted by Brendon-KS on September 21, 2018 at 04:00:22 from (63.245.145.35):
In Reply to: Hydraulic cylinders posted by Graveyard1984 on September 20, 2018 at 23:08:58:
George hit most of the high points in his post. I'll just add that the cylinder size you use depends greatly on the geometry of the hitch system. A small diameter, long stroke cylinder can do the same job as an equal-volume large diameter, short stroke cylinder if the geometry gives it sufficient mechanical advantage through the linkage. Also, for best performance you'll want to have a balanced system. You don't want overkill hydraulic capability compared to the rest of the system because it's much more desirable that a relief valve opens compared to ripping things apart.
George mentioned down pressure. Very few 3-point hitches have the capability of applying down pressure. If this is something you feel you want be sure to provide a means of floating as well since most all jobs will work much better with the hitch free to float when in the lowered position. If the hitch is locked in place (which it will be when applying down pressure mode) the weight of the tractor can get suspended by the implement and the front wheels which leaves your drive tires searching for traction. This might be OK for some jobs but not for general use.
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