Several years ago when I still lived on my parents farm, I built a beast of a 3PH woodsplitter. It worked okay, but the cylinder had only a 15 inch stroke and it weighed a lot! On the farm, I had access to a loader tractor though, so it didn't bother me. I moved the splitter to our new place and rigged up an electric hydraulic pump to run it, but it was such a beast to move around without a tractor and with the short stroke limitations, I ended up selling it. I bought a used Wallenstein WX310 which is meant for a tractor as well, so I just put some legs under it for a comfortable working height. I stuck with electric power though and built this powerpack: A lot of the parts are repurposed (pump, valve, filter, motor starter, wheels) but everything else still added up. The used motor was sold to me as 10 hp, but it's been rewound and the nameplate removed so I'm skeptical because the weight and shaft size are more typical for 7.5 hp. It works well though and in the end, I guess that's what matters. I like the fact that it's a lot quieter than a gas powered unit and there are no fumes. I split right inside my storage shed, although the motor and pump still have quite a whine to them so I would like to put some longer hoses on the splitter and set the powerpack outside the door. I also had to run a 40 amp service to the shed to run this machine, but I wanted power out there anyways, so the cost for that wasn't too bad. I also wanted to be able to use it for other purposes if it's ever needed.