Bi Directional Log Splitter

[clutchcargo]

Just playing with some figures. If you use a 16 GPM pump, or flow from a tractor, the speed of the cyl will be 6.1 sec to extend, and 4.8 sec to retract. What is the actual GPM you will be using?

Haldex 16gpm pump - Honda GX39 13HP - Prince Fortress 4.5 x 24 Cylinder all operating at 3000 psi.

You got it right on the speed. Should keep me busy splittng a log every 5.4 seconds don't ya think?

47,713 lbs force on extend side, 35,785 on the retract.

I only need 8 hp for the pump but the extra 5 hp cost me $57. You know "more power grunt grunt grunt". Credit Tim the Toolman on that quote!

 

[clutchcargo]

Roy,

I believe he is going to use a push block and two splitting wedges on each end. That is just the opposite of the other two way splitters.

With a table on each end, the total length will be longer than most splitters.

If his pump is capable of 3000 psi, the splitting force will be around 23.85 tons in extend mode, and 17.89 ton in the retract mode

JJ you really have your thinking cap on and calculator handy. Your comment about the length is half right. The splitter will be sideways perpendicular to the tow vehicle.

Over all width 63" with a 30" removable table on each side.

 

[Yellowhair42]

I have a Powerhorse two way splitter and it's fast.Your design will be even faster.I have two helpers and can keep up with them.All of it's sliding surfaces are steel on steel and after three years it's showing no wear yet.

 

[clutchcargo]

I have a Powerhorse two way splitter and it's fast.Your design will be even faster.I have two helpers and can keep up with them.All of it's sliding surfaces are steel on steel and after three years it's showing no wear yet.

Just think how fast you would be if you did not have to be moving all the split wood out of the way. You could have your helpers working with another splitter and double your out put. LOL

The **** Erectus will make two windrows of wood on each side 5 feet away from the splitting area without touching it after it has gone through the wedge. Like having a conveyor on each side.

 

[Brad_Blazer]

I guess you will use 4-way wedges or similar because if you have to split more than once the moving pusher design becomes more work.

 

[clutchcargo]

I guess you will use 4-way wedges or similar because if you have to split more than once the moving pusher design becomes more work.

Brad amen to that. It will have single, 4 way and maybe a box type like on the Timberwolf TW-7

 

[KennyG]

Since we are kicking around ideas, how about a double ended splitter block rigidly mounted and a moving table over it with push blocks on both ends? Wouldn's this give you the efficiency you are looking for without a significant increase in overall splitter size?

 

[oldnslo]

I guess I am the odd ball again, because my first thought was, this would be an ideal application for a double rod cylinder. Equal speeds and forces in both directions with what would seem like significantly less moving parts.

Just the ramblings of a semi senile old phart...

Roy

 

[J_J]

Have you considered the double lever auto valve? You know how it works right. If you are fast enough, the auto valve will extend and retract automatically, and then return to neutral, waiting for another cycle.

If you do use this valve, the relief is set to 2000 psi, so you might need to adjust it for your desired performance.

https://www.surpluscenter.com/item.asp?item=9-6587&catname=hydraulic

Same valve but with PB.

https://www.surpluscenter.com/item.asp?item=9-6587&catname=hydraulic

 

[clutchcargo]

Have you considered the double lever auto valve? You know how it works right. If you are fast enough, the auto valve will extend and retract automatically, and then return to neutral, waiting for another cycle.

If you do use this valve, the relief is set to 2000 psi, so you might need to adjust it for your desired performance.

https://www.surpluscenter.com/item.asp?item=9-6587&catname=hydraulic

Same valve but with PB.

https://www.surpluscenter.com/item.asp?item=9-6587&catname=hydraulic

JJ that splitter in the background has the autocycle valve and it works great. I am sacrificing speed for safety on the Erectus by using a non detented valve so you I will have at least one hand out of the danger zone. You never know when the FIL might want to use it.