Hi I’m new here. I am planning on building my own press. I want to use if possible a 3hp electric motor that I have. It is 3450rpm think. Anyone know of a 2 stage pump that will work with this? Any help would be appreciated.
You might start with Javos Ironworks’ press build post on this forum. It has links to pumps from Concentric at Northern Tool. However, a three Hp may be pushing it. I am trying to get a callback to from Concentric regarding running my 5 hp with a 13.6 or 16 gpm per minute pump. As far as i can tell from researching it, the rule of thumb for two stage pumps
( logsplitter) is that it takes about 2.5 times more hp with gas engine than electric due to torque curves, etc. But I wouldn’t base the design on rule of thumb. I don’t know if anything les s than 11 gpm would be enough
That is the press that brought me to this site. It is a gem!
I’ve been in touch with a few people, but they get sketchy when it comes to liability issues. I’ve learned that a three hP MAY be pushing it, but rule is 2.5 times more HP is required from a gasoline vs. electric power supply. It also appears the g.p.m of the pump is not super important. Heres where i’m at; bought a 2" x 12" rod in a 5" cylinder, a 5 hp motor, a 16 g.p.m pump with a 20 gallon hydraulic reservoir. I will post everything as it goes (with Jeff’s permission) on the forum, but going to take a while . Also, I’m seeking a foot control rather than the hand controlled two stage log splitter pump control valve…
Hope that helps,