I'm in the process of planning a wood splitter build, and will most likely be modeling a conglomeration of these two designs: Firewood Splitter Videos Whitlands Engineering : WS 300/400/450 I originally planned a horizontal machine, but after seeing these models I'm convinced that a properly designed VERTICAL machine is the way to go. (Dennis the Backwoods Savage will be happy he has earned one convert!) :coolsmile: The log lift, comfortable working height/position inherent to standing at a table, conveyor, and possibly the addition of a self-propelling system all are very attracitve to me. So, in planning this machine, my question is can anyone out there help me with the hydraulics to power the conveyor, and a drive axle. I've thought about using a hydraulic motor to drive the pinion of an automotive rear axle assembly (Ford 9") for propelling the unit. I've got the splitting cylinder, lift cylinder, pump & valves handled, but I don't know anything about how to properly spec out a hydraulic motor, and how it will effect the existing hydraulic system. Will I need to go with a larger pump? Should I use a selector valve to turn the drive unit on and off? How do I reverse the drive motor on the axle? How will the pump for the conveyor effect the splitter system flow, and so on? I currently have a 4 X 24 X 2 splitting cylinder, a Prince 3000-1 valve, a second valve for the log lift and am planning on using a 2-stage 16gpm pump. Please if anyone can point me in the right direction to get this all figured out I would very much appreciate it.