Brand new pump locked up?!

Correct, once it fully shifts...but its not on/off like a light switch...the spring on the load sense pin is compressed progressively as the pressure builds.

 

10 horse Briggs.

 

There is a small transition window of 50-100 psi, but once it shifts, it's going to stay there until the pressure drops and resets the load pin.
They should shift pretty quick as long as the pressure is going past the set point. Mine have always shifted smooth as silk at the set point unless something was wrong in the pump. I can easily hear the shift with the electric motor vs a gas engine.

 

10 hp will run the higher gpm

 

The pump I pulled off looks like a 2 stage but this splitter never shifted since I got it. And that’s been many many years and cords ago.

 

could be a damaged load pin or check ball seat. It could be adjusted too far also.

 

That's plenty for either pump...

 

I've never operated one that worked that way...my Champion you could literally hear and see it trying to decide what "gear" it wanted to be in when you got into some gnarly wood...

 

Did the engine stall sometimes?

 

The pump I used as a test bed with my electric motor had a worn check ball seat. I ground it as close as I could, but it would still "hunt" for the right gear in certain pieces. Almost like a smooth chatter. My good pumps have just flat out shifted.

 

I have used a couple of gas powered splitters that made it hard to tell when it shifted, unless you were paying careful attention to the cylinder speed.

It can be hard for some people to tell an 8 second cycle time from an 11 second or 13 second cycle time. Many don't care as long as the splitter works.

My high pressure is 1.8 gpm because I am using a 3hp electric motor, so when it shifts the ram slows down a lot. You can't miss it.

 

Well, I've used probably a dozen different splitters over the years, I guess I've never experienced a good pump.

 

any pump that does the job is a good pump. They can wear and have small issues that go unnoticed, but still work ok. I have an older speeco and it shifts pretty quick.

 

That is one thing on the one I just built, the high pressure stage is 4.1 GPM...I would pick one with a little less GPM on the high pressure side if I had thought (and calculated) things through a lil better...but its working fine as is now that I have the relief set at 2300...the current plan is to just "run it!"

 

No, but maybe the change from high to low was so gradual I never noticed. I’ve experienced other splitters, at gtg’s, and the change was more pronounced. I’ve split stuff that slowed the wedge down for sure, even backed some out.

 

That the thing that is confusing to me...if its not shifting, it would surely stall out sooner or later (unless the pump is so whooped that it is just bypassing internally), or if it is stuck in low, it would be exceedingly slow...like as in almost a full minute for a full stroke out/in (based on your 5" cyl, 4 GPM in high pressure stage, and a 24" stroke)
Maybe with that big ole cylinder its just got so much power that it never needs to shift! (not likely)

 

That's 6.5 hp! How does the motor handle it? That's a lot of torque.

 

My math showed 5.5 HP, (4.1 gpm x 2300 psi/1714) but yeah, it's maxed out...2300 seems fine, 2500 was no go...I still need to take an amperage reading on it though too...but, honestly so far the only time it gets anywhere near 2300 is when I force it at the end of a stroke...I need to find some fresh elm to split for a real test!

 

So, I’m planning to go with the fleabay one. Looked at seller feedback and see this;



Guess I won’t be ordering from work today. Should be able to this weekend. 90 day warranty so I’ll be splitting the rest of my sons hoard soon.

 

I'm calling BS on that feedback,,,if it turns backwards then everyone would give it bad reviews, because most all small engines turn the same way...