Vickers pump....

[mrcaptainbob]

I have a Vickers pump on my log splitter. The ram moves slow, sort of has power. The engine is a 16 HP running about a 3" pulley, while the pump has about a ten inch pulley. The inlet and outlet ports are one inch. There are no numbers on the casting. How can I tell what the volume and pressure of this pump is? Also, can this pump be run direct from crank spindle via Love-Joy coupling? That is, say, 3600 rpm's?

[PILOON]

No reason not to unless pump is too large for the engine and stalls it out.

1" ports do suggest fairly high GPM's so perhaps a 5" pump pully might do the trick, in fact that would double the speed and if stalling does not occur you could then direct couple.

My trackhoe is 5 hp and directly coupled!

[J_J]

If your 16 HP engine is running at 3600 rpm, then with that pulley ratio, the pump will be running at 1081 rpm. That rpm can turn a 1.7 cu in pump, and give 8 GPM.

Does your pump look anything like this.

https://www.surpluscenter.com/item.a...name=hydraulic

There should be some numbers on it somewhere.

A 16 HP engine can run an 8 GPM pump, at maybe 3000 psi. To know the rated psi, put a gage on the pump and make the valve go into relief. This will at least tell you something close to the pump rated pressure. You have a lot of unknowns there. pressure, max rpm, volume, and you can back track some things and figure things out.

This data will give an example. A 16 HP engine can directly drive a .5 cu in hyd pump at 3000 psi, and pump 8 GPM.

Some pumps are capable of turning both directions. If so, then a Love-Joy connection can be used. I believe most small engine will turn counterclockwise, then the pump will have to be capable of turning clockwise , two shafts facing each other. If the pump is designed to only turn counterclockwise, then you can not drive it directly shaft to shaft. You can still do the pulley thing. Different size pulleys will change the speed of the pump.

[J_J]

If they used a larger displacement 1.7 cu in pump and geared it down, to produce a certain GPM, if you now connect it directly to an engine shaft, it would require 55 HP, and would stall it for sure.

mrcaptainbob

Is this a home made splitter?

[George G]

With both inlet & outlet being 1 inch. I would guess, you have a Vickers motor.

[Wayne County Hose]

A 16 hp motor running over a 3:1 underdrive on a log splitter. Sounds like somebody that really didn't know too much or built this from parts laying around. I would just drop the pump to a 3" pulley and see what happens. But, I would stand back for a few seconds once I pulled the cord.

[mrcaptainbob]

That is not the pump, J_J. This one is really old, as is the whole splitter. It is a home made splitter that I got from my son who got it from a friend, who got it from....well, I think it may go on for a few more. It's a rat nest of plumbing, as it has two controls. The one with the lever (Geeess..I need to take a pic of this!) that operates the cylinder is controlled by the lower one that kicks the system off, unless it's button is pressed by a tab on the cylinder shaft. There are so many 1/2" and 1/4" lines on this, it's hard to tell what's going on. The end of the cylinder is bolted to a large, 4" thick steel block filled with ports and cavities. The plan is to salvage the engine, cylinder and pump, add a new and up-to-date valve control and have a 'proper' log splitter.
I will put a new gauge on to check, as the existing is broken.
All the controls and relief mechanism are Sperry/Vickers.

[PILOON]

You stated that "inlet and outlet ports are 1" ", that suggests that the pump could be bi-directional.
Maybe that helps.

[mrcaptainbob]

Interesting. Could I tell if I opened it up?

[J_J]

If the pump is running and not leaking, I would not tear it down just to check. You might not be able to find the gaskets and seals. Can you not tell from how it was hooked up, which way it was turning.