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: 1964 JD 2010 Dsl - Part 2 - by Jim Nielsen. Despite having to disassemble the majority of my John Deere 2010's diesel engine, I was still hopeful I could leave the engine-complete with crankshaft and camshaft-in the tractor. This would make the whole engine rebuild job much easier-and much less expensive! I soon found however, that the #4 conrod bearing had disintegrated, taking with it chunks of the crankshaft journal. As a resul
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