[omi] hydraulics

Hi Folks, I haven't been around much for fabrication of the frame and probably won't be there on saturday build days at least until mid june, but I would like to help with the implementation of the hydraulics system. All the designs I've seen are centered around the powercube which is powered by a briggs and stratton engine. For simplicity and flexibility, I propose using an electric pump either 12VDC or 120VAC, or a standard mount and coupler so we could swap them out. It could still be powered by a generator for remote applications, or ideally from solar/batteries. I just see the OSE powercube as being a little more complex than we might prefer moving forward, and we can still get the same force even if we go to a lower power pump, the machine would just operate more slowly. power unit: http://www.zorotools.com/g/00034368/k-G0711252?utm_source=google_shopping&a… valve example (just a cheap one...not researched) http://www.coastpneumatics.com/valve-3quarter.html does anyone know the force/pressure we need for the rams? Cheers, hol