Purpose built pumps for log splitters are two stage pumps. This give you the best of both worlds, high GPM for cycle rate, and high pressure for more "PUSH". A typical pump might offer a first stage at 16 GPM and 650 PSI, with a second stage of 3 GPM and 2500 PSI. The pump switches modes based on back pressure.
PTO pumps are single stage and limited to 2200 PSI or there abouts. They will give you a better cycle rate than an internal tractor pump at 3 to 5 GPM, but the "PUSH" won't be any better.
With a big enough cylinder on the splitter, you can make the compromise work. Use the high GPM of a PTO pump to cycle the big cylinder quickly, and the large diameter of the cyllinder to make enough force to split the tough stuff.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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