8 horsepower running a hydraulic pump with just one 5/8" wide belt can make around 4 GPMs @ 1800 PSI if you're lucky. That's not much when it comes to a log splitter. I still have a splitter I built 35 years ago with a Bolens garden-tractor engine and a pump and cylinder off a John Deere 350 crawler-loader. Engine is an S8D Wisconsin. Cylinder is 4" diameter. Pump is a 2.3 cubic inch Cessna. Just to get any wood split I had to put a 3" pulley on the engine and a 14" pulley on the pump. Basically a 4.6 to 1 ratio and even with a 5/8" belt - it slips in tough wood. Note also that the engine runs 3600 RPM. So the pump is only running around 800 RPM. That makes it working as a 5 GPM pump. As long as the 5/8" belt is dry - the engine stalls in tough wood instead of the belt slipping. 8 horsepower is not enough to run a splitter with a single-stage pump unless you've got a 5" or bigger diameter cylinder.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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