Dump trailer conversion to gas engine/hyd pump.

[lennyzx11]

This is more of an idle thinking thread.

I’m looking for insight on how to convert my dump trailer from a single acting 12v power pack unit to a gas engine and pump.

The dump cylinder is single acting.

If I wanted to run a double acting cylinder(s) as a separate accessory circuit also along with the single acting cylinder, what would be the most efficient way to convert?

Thinking about a hydraulic winch or wood splitter ran off the same power unit. Not both at same time.

The dump back to tank from the cylinder’s single hose is my dilemma. A diverter solenoid or on/off valve tee’d into that supply hose is first thoughts.

Ideas?

 

[ptsg]

You could use a regular double acting spool valve. Then, just connect one of the ports to the dump trailer cylinder. The other port, either cap it or run a line back to tank.

By capping the non used port, it will force the fluid through the relief valve when you're lowering the dump bed. Not a necessarily a bad thing as it's for short periods of time but will load the engine up to the set relief valve pressure.

 

[lennyzx11]

You could use a regular double acting spool valve. Then, just connect one of the ports to the dump trailer cylinder. The other port, either cap it or run a line back to tank.

By capping the non used port, it will force the fluid through the relief valve when you're lowering the dump bed. Not a necessarily a bad thing as it's for short periods of time but will load the engine up to the set relief valve pressure.

Ptsg,
So it would be as simple as running the second line from the da spool valve back to tank or tee’d into return line?

Pressure into spool on inlet.

Neutral position pressure flows through spool to return to tank.
Position A. Pressure flows through valve to cylinder.

Position B pressure flows through valve to return to tank along with gravity pressure flowing from dump cylinder to return to tank also?
The A side going to the single acting cylinder is open to return while the B side is pressurized?

After thinking about it... I guess it would have to be or a deadhead situation occurs.

 

[Peter 315]

You could get a spool valve with float for the dump trailer...

 

[LouNY]

Or get a valve with a float detent, and use the float to lower the bed.

 

[ptsg]

Ptsg,
So it would be as simple as running the second line from the da spool valve back to tank or tee’d into return line?

Pressure into spool on inlet.

Neutral position pressure flows through spool to return to tank.
Position A. Pressure flows through valve to cylinder.

Position B pressure flows through valve to return to tank along with gravity pressure flowing from dump cylinder to return to tank also?
The A side going to the single acting cylinder is open to return while the B side is pressurized?

After thinking about it... I guess it would have to be or a deadhead situation occurs.

Yes or as Peter and Lou suggested, just get a valve with float and avoid extra hoses and fittings.

 

[Tx Jim]

May I ask why you desire to convert from single acting to double acting dump cylinders & convert to gasoline over electric powered pump? Will your dump bed not lower when bed is empty? I've owned a flat bed rd bale spear that's moved many 1000's of rd bales with very minimal problems.

 

[RickB]

Flow requirements for an effective log splitter are going to be much different than for a winch or bed hoist.

 

[lennyzx11]

Flow requirements for an effective log splitter are going to be much different than for a winch or bed hoist.

I was just researching that.
The wood splitter I was thinking of using is a 22 ton with a 13 gpm pump. I was wondering if a 6.5-8hp engine on that pump would handle the dump on the 6x12 trailer rated for 7k.

What started this thinking was the fact that the dump trailer battery is bad and won’t hold a charge any longer.
And the motor is bad on the wood splitter which was a “found” treasure for 200 bucks.

I have two other good splitters.

So rather than a battery (or even two) here, an engine there, maybe make a project of it and get an all in one that I could split from the ground or trailer, throw the splits in the bed, and then dump in the stack.

I use the dump trailer for bringing firewood home and as my general utility trailer.
I use a warn 4000 lb electric winch on a receiver mount to pull logs (and tractor treasures) up into the trailer occasionally. It take a toll on the battery every time. Two deep cycles would be better so that could mean buying two good batteries.

Or do like my wife says and buy a motor from harbor freight, fix the splitter and sell it and use the money to buy some batteries for the dump trailer.
Silly woman... how did that make anything “better”!