That does seem high. I have a Honda GX630 running my 28 gpm, 2 stage pump. I think the pressure is set at 2300-2400 psi, around that ball park. With an efficient enough design, you won't need 3k psi. Things start to break when you push that much.
Metaris.com/hydCal/HP.asp
This site says I would need about a 50 h.p. engine to run a 28 gpm at 3,000 psi
Is that right? That seems high but they are using the formula that it seems like everyone else uses.
Ok thanks for that. I did forget that.Dont confuse a 28gpm single stage pump with a 28gpm 2 stage pump. A 28gpm single stage pump will take about 54hp to build 3000psi. A 28gpm two stage pump is only putting out 28gpm in the low pressure mode of the pump. When it starts building high pressure, the flow drops to about 8 or 9gpm and takes much less hp. Also the pump only builds pressure to meet the resistance requirements it encounters. If your cyl is able to split all your wood at less than 3000psi, then your pump will never see 3000psi and your hp requirements will never reach maximum levels.
Also, to answer your question about using diesel engine. Most, if not all the 2 stage splitter pumps give flow rates at 3200-3600 rpms. Now there are a few of the small high rpm diesel engines out there, the Brigg's Vanguard diesel engines are one example. That are rated for 3000+rpms. Sadly most of the small diesels are not rated for those rpms. Doesnt mean you cant hook one up to a 2 stage pump, just that because of the lower rpms of the engines, your 2 stage pump isnt going to produce the advertised flow rates
How do you get a 4 foot diameter round from the ground to the ss? It might work for you but I don't trust myself to not get hurt.I second the super splitter. I am a commercial operation that does well over 500 cords a year including bundles. I have had my SS for 3 years and have had no problems at all with it. I have more than paid for the splitter with savings in operational costs. I use 1/4 of a gallon of gas to split a cord of wood. With 3 guys I can split and load a cord in under 20 minutes. I have split 3 to 4 foot diameter rounds without any problems at all. I split pinyon pine and pinyon juniper with mine which are both very knotty. It splits green, dead and burned wood with no problem. I have had a couple of bolts work lose and have to lubricate the bearings regularly, but it is a lot better than replacing hydraulic hoses, filters and hydraulic oil on a regular basis. My customers love how cleanly the wood is split. I live in the high desert of Nevada and my splitter has no problem running in temperatures of below 0 to over 100 degrees. I personally would never run a hydraulic splitter again after owning a super splitter. There is no comparision between the two.
You noodle it into smaller pieces.How do you get a 4 foot diameter round from the ground to the ss? It might work for you but I don't trust myself to not get hurt.
I got it running today. It sounded good. How do I find out the gpm for the pump?If the motor is good, its time to build one of these, http://www.arboristsite.com/communi...plitter-build-diesel-mower-conversion.290862/
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