Need a pto log splitter guru for advice J_J?

[Car Doc]

Don't know what your FEL relief valve setting, but the relief for that valve says 2250 psi. I don't know if it is adjustable, and if it is, then adjust it to match your FEL psi.

Ok I will thanks. :thumbsup: I am still in the process of determining just what my pump setting is with a gage so once I get that I sure will make them the same.

I see by looking at my YM336 manual (same tractor as mine just US spec is all) this morning that the pump relief valve can be shimmed up to approx 2200 to 2700 psi so I should have gobs and plenty of room to set them both properly each shim increases about 50 psi fwtw.

I see where my valve has been shipped from NY so it will take 4-5 days by brown ground.

 

[N8ghz]

I may try one of these valves too, but remember, when this thing is regening oil from the rod end to add to the pump going to the cap-end, that you are getting zero to the tank. That is why the specs show a minimum tank capacity. The tank has to be able to make-up for the oil that is not returning from the rod end during the regen.

I have been hunting for info on this valve, and it seems that it has been around for several YEARS. It is surpirising that we don't have people who have played with one by now.

I will be interested to hear your reports.

 

[J_J]

Car Doc,

Here is a comment from someone that has used one on his 7 GPM tractor. He did not say if he ran the engine to produce the full 7 GPM's, or he reduced the engine speed to produce about 4 GPM's.

You can shift the lever to fast or slow any time in the stroke, so after the log has started to split, you might be able to shift back to the fast mode.

Quote:

LSR -3060-3 Price $ 87.95
Hi, a few weeks ago I purchased a Prince LSR-3060 2-speed valve from you, with the intention of using it on a tractor(~7gpm) for a 3pt mounted splitter. At the time you had asked for an update on how it ended up working out.
Having finished the splitter I can report it works very well in controlling 2 speeds. The lever has 2 stops for extension, pull it all the way out and the ram moves at about double speed, once it hits resistance release the lever and pull it again to the slow stop (about halfway for full force). However, what I think is really cool is that after contacting a log and getting the initial split at the slow speed, you can then pull the lever all the way out again and split through the full length of the log at the faster speed thus saving time.

Although you said regent works in retract also, I have not read anything, that it will do that. It might, but have not heard anything.

 

[Car Doc]

I will be posting my progress dont worry guys (I am taking pics as I go) and it almost seems too good to be true a valve can serve almost the same purpose as a 2 stage pump does to me anyway.

There again I am no engineer just a tinkerer I will try most anything once especially if it saves money and effort.

Btw you guys were wondering about regen during retract? The guy at Cylinder Services said it does regen on retract to speed it up fwtw.

 

[N8ghz]

Btw you guys were wondering about regen during retract? The guy at Cylinder Services said it does regen on retract to speed it up fwtw.

This is the thing I wonder about. The Prince sheet I saw on it, showed a retract rate of 1.22" per second with a 3 GPM pump. That'd be 19.68 seconds on a 4x2x24 cylinder. So I doubt if it regens on return?
Somewhere else I read that max GPM is 5 with this valve.

 

[J_J]

Car Doc,

I think the guy at Cylinder Services is blowing smoke, as Prince retract time is the same as any 4 in cyl, 2in shaft, and 3 GPM.

Looking at the figures, I don't believe that there is a fast return, or they would be bragging about it.


PRINCE# LSR-3060-3


PSI 3500

MAX GPM 4 gal in - 25 gal out

3/4" work posts, 1/2" in & out

4 in, 25 out

TYPICAL PERFORMANCE with a 3 GPM pump, and a 4" bore cylinder with a 2" rod:

Rapid-Extend speed: 3.7" per sec. (24" in 6.5 sec!)

Full bore speed: .92" per sec.

Rapid-Extend force: 7,850 lbs @2,500 PSI

Full bore force: 31,400 lbs

Retract speed: 1.22" per sec.

Unless someone puts more GPM through the valve, and gets the results, it would be hard to know what would happen with 5 or 6 GPM's flowing through the valve.

If the ratio is 6 : 1, it would be hard to believe the valve is capable of 36 GPM's, with 3/4 in work ports. It might work, but there would be some problems.

3 gal pump for computing figures.

4 in cyl
2 in rod

Using 3 GPM for extend = 26.66 sec

Using 25 GPM for extend =3.116 sec

using 3 GPM for retract = 20 sec

The fast extend time is only if the wood is easy to split

Cycle time will vary depending on the time the pump stays in fast extend, otherwise, if hard stringy wood, cycle time will be computed using the low GPM figure.

 

[Car Doc]

I believe you JJ its all the salesmen I wonder about. :laughing:

All I have to do is speed up my engine to find the limits of it and I wont be shy about it either speed is what am after. :thumbsup:

 

[Diamondpilot]

I built a 3 point splitter 7 years ago using a 4x24 cylinder. My tractor is 28HP and 5 7gpm hydro system. With the tractor at 1200 rpm, about half of its 2700 rpm red line, give me plenty of power, pressure, and speed.

Chris

 

[J_J]

Cycle time is relative to the operator.

A young person full of energy, etc, may think the splitter is slow because he can throw a large log in the splitter and have to stand there and wait on the rod to extend and retract. An older person may think, that slow time is just about right as I struggle to lift logs and hold the lever.

And there are old people that have no patience and want it to go faster all the time.

I think the auto log splitter valve would be about right for me, because, when I set the log and set the valve, I can be getting the next log ready for splitting.

Now, if the auto valve had regen, you would not waste much time, because the splitter would compelete the operation and be waiting on you to get the log ready. A work table would also be ideal for the pieces of wood that need re-split.

 

[Car Doc]

That's great to know Diamondpilot thats for adding your experiences! :thumbsup:

JJ I hear ya its 100% operator now an auto valve would be nice is there such a thing I guess I never heard that one either the valve I am getting isn't one or is it? (shows how much I know) I just searched and holy mackerel are they pricey whew but it would be nice....