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Re: 3-Point Hitch Standard Dimensions
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Posted by Hugh MacKay on July 25, 2006 at 05:06:30 from (209.226.247.13):
In Reply to: 3-Point Hitch Standard Dimensions posted by Sal Z. on July 24, 2006 at 12:52:10:
Sal Z: I'm kind of curious which you are trying to fabricate, and if indeed fabrication is your goal. Are you trying to fabricate implements, or a hitch for a particular tractor? If you are planing to fabricate implements then follow the specs Joe has given you. If you are into designing and fabricating a 3 point hitch for a tractor that was not engineered for 3 point hitch, you are into something much more complicated. Some of the considerations you must look at are; will the implement pull true and centered behind tractor, will the hitch have the lifting range to lower implement to ground as well as lift it high enough for normal movement and when completed will it lift the normal Cat I load safely. The design of some tractors is such, you will never achive all of these goals. Mounted equipment has never worked perfectly on tractors with configuration such that operator seat is behind rear axle center point. Some makes and model are easier than others to correct some of the problems I outlined above. I wouldn't want to comment further until I knew make and model of tractor. I just finished building one such hitch, we didn't get it right the first time. In fact we did it by stages using a 3 point disk harrow to test each component. We had to change where vertical links hook to lower links to get the hitch lifting good weight. We then experimented with a chain for top link, trying to decide where on tractor, was best position for top link attaching. For example the first try, tractor lifted front of disk but back of disk was still on ground. To correct this we had to lower the attachment point of top link at tractor. Almost every tractor will be different, study the features of factory 3 point hitches on tractors. Determine if you can incorperate those features on your fabrication. This requires some quite precise measurments and be prepared for changes. I can tell you, my hitch was a fraction of the cost of any aftermarket hitches, and it lifts twice as much as the nationally advertized aftermarket hitch. It works well in field pulling disk as well. Contact me if you wish.
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