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Mr. Schwiebert The reason for powering the pumps with the P.T.o. are as follows: - backhoe will be removable (mounted "clip on style" similar to a 4500 series Ford) and the whole thing will be functional as a unit, the only thing required to use this hoe on another tractor would be the mount. - to be able to adjust pump speed to optomize boom speed (within limits of course) - although a tandem pump would be nice, I have several pumps on hand - this will be my first hoe construction, probably not my last, thinking of doing a small production run of them (once it works the way I want), and fully self contained units remove a lot of variables from the mounting equation. Mounts would be the only major changes, tractor to tractor. - also I wanted to use easily obtainable pumps for future service, specialty and expensive parts do not go into my designs if it can be avoided *** note to all reading along: if this sounds appealling to you, remember it is not built yet and I want to try to break it, then possibly (probably) redesign, one would not be available for a long time. Off topic now, do you know of any structural engineering web sites that may assist in designing a steel framed shop equipped with lean-to, jib cranes, straw bale infill, etc? Thank you very much for your input, if you type twice as fast as I do, it took a lot of your time. Truly Zoltan
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