I have a Yard Machine gas-engine powered log splitter that I would like to convert to power from my New Holland T6050 hydraulics. Is this a reasonable idea? Is there a conversion kit on the market? Any ideas?
Converting Gas engine powered log splitter to tractor hydraulics power
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Grn mtn boy
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I'm not sure which sub model you have but TractorData.com lists three. Two of which are closed center and one which is open center. Your first step should be to figure which hydraulic system you have. I've never worked on a project using closed center hydraulics, but they're many here who have the knowledge.
I would imagine you have some rear remotes on a tractor that size... And if it's the open center type, it could be as easy as connecting you remotes to the pressure and return sides of your splitter valve accordingly. You'll have to bungee the remote valve lever open if you don't have a open detent.
The performance of the splitter may suffer because of less system pressure. I'd imagine that your splitter has a two stage pump that'll produce more pressure than your tractor but that depends on the specifics, which I don't have.
Your tractor does have a fairly robust pump. The smallest listed is still 16.6 gpm which should move a 4 inch cylinder along pretty well. Of course to get max flow, the tractor will be at high RPMs. Which brings up the point of running a wood splitter with a 100+ HP tractor. I'm sure some will ask you why.
I'll be interested how to do this if it turns out you have a closed center system. There's a lot of experience lurking around TBN.
I would imagine you have some rear remotes on a tractor that size... And if it's the open center type, it could be as easy as connecting you remotes to the pressure and return sides of your splitter valve accordingly. You'll have to bungee the remote valve lever open if you don't have a open detent.
The performance of the splitter may suffer because of less system pressure. I'd imagine that your splitter has a two stage pump that'll produce more pressure than your tractor but that depends on the specifics, which I don't have.
Your tractor does have a fairly robust pump. The smallest listed is still 16.6 gpm which should move a 4 inch cylinder along pretty well. Of course to get max flow, the tractor will be at high RPMs. Which brings up the point of running a wood splitter with a 100+ HP tractor. I'm sure some will ask you why.
I'll be interested how to do this if it turns out you have a closed center system. There's a lot of experience lurking around TBN.
J_J
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There is no problem converting either system.
If your tractor is open center, you need a QD at the back from the PB from the loader valve, which you will plug in the log splitter pressure hose.
The return can go directly to tank.
If your tractor is closed center, all valves are in parallel, so the same pressure line will connect to all IN ports of all closed center valve including the log splitter closed center valve.
Return port hose goes to tank.
If your tractor is open center, you need a QD at the back from the PB from the loader valve, which you will plug in the log splitter pressure hose.
The return can go directly to tank.
If your tractor is closed center, all valves are in parallel, so the same pressure line will connect to all IN ports of all closed center valve including the log splitter closed center valve.
Return port hose goes to tank.
BigEddy
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If it were me, rather than converting I would be setting the splitter up for either or operation.
Remove the hose from the splitter valve inlet and replace it with a long hose with a QD fitting to match the tractor out port. Attach a mating fitting to the outlet of the splitter pump where the other end of the hose was connected.
Disconnect the hose at the splitter valve out port. Add a long hose and QD that mates with the tractor return port. Then attach a mating fitting to the original hose that runs to the filter or tank.
To run off the tractor just connect the hoses to your remotes and detent or bungee the handle. Connect the splitter return hose to the splitter pump for safety and to keep them clean.
To run off the engine just connect both sets of QDs on the splitter.
Total cost. 2 hoses and 2 sets of QDs that match your tractor remotes plus any miscellaneous fittings.
Assumes remotes on the tractor and your splitter is open center which it most likely is. You will want to drain the splitter and refill with the same fluid as your tractor hydraulics BEFORE connecting. Do so while your lines are disconnected and cycle the cylinder to evacuate both ends.
Remove the hose from the splitter valve inlet and replace it with a long hose with a QD fitting to match the tractor out port. Attach a mating fitting to the outlet of the splitter pump where the other end of the hose was connected.
Disconnect the hose at the splitter valve out port. Add a long hose and QD that mates with the tractor return port. Then attach a mating fitting to the original hose that runs to the filter or tank.
To run off the tractor just connect the hoses to your remotes and detent or bungee the handle. Connect the splitter return hose to the splitter pump for safety and to keep them clean.
To run off the engine just connect both sets of QDs on the splitter.
Total cost. 2 hoses and 2 sets of QDs that match your tractor remotes plus any miscellaneous fittings.
Assumes remotes on the tractor and your splitter is open center which it most likely is. You will want to drain the splitter and refill with the same fluid as your tractor hydraulics BEFORE connecting. Do so while your lines are disconnected and cycle the cylinder to evacuate both ends.
J_J
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His tractor is closed center.
Hydraulics:
Type: closed center load sensing
Capacity: 18.5 gal [70.0 L]
Valves: 2 to 4
Pump flow: 26.5 gpm [100.3 lpm]
Total flow: 43.6 gpm [165.0 lpm]
Steering flow: 17.1 gpm [64.7 lpm]
He would need a closed center log splitter valve for tractor use.
Hydraulics:
Type: closed center load sensing
Capacity: 18.5 gal [70.0 L]
Valves: 2 to 4
Pump flow: 26.5 gpm [100.3 lpm]
Total flow: 43.6 gpm [165.0 lpm]
Steering flow: 17.1 gpm [64.7 lpm]
He would need a closed center log splitter valve for tractor use.
Tx Jim
New Member
J_J
Maybe I'm wrong but I thought NH's CCLS hyd system will operate a open center control valve that attached to tractors remote control valve(SCV) with no problems.
J_J
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I don't know.
Perhaps you will explain how it works.
Load-sensing systems (LS-system) generates less power losses as the pump can reduce both flow and pressure to match the load requirements, but requires more tuning than the CP-system with respect to system stability. The LS-system also requires additional logical valves and compensator valves in the directional valves, thus it is technically more complex and more expensive than the CP-system. The LS-system system generates a constant power loss related to the regulating pressure drop for the pump regulator:
Power loss = \Delta p_{LS} \cdot Q_{tot}
The average \Delta p_{LS} is around 2 MPa (290 psi). If the pump flow is high the extra loss can be considerable. The power loss also increases if the load pressures vary a lot. The cylinder areas, motor displacements and mechanical torque arms must be designed to match load pressure in order to bring down the power losses. Pump pressure always equals the maximum load pressure when several functions are run simultaneously and the power input to the pump equals the (max. load pressure + ΔpLS) x sum of flow.
Five basic types of load-sensing systems[edit]
Load sensing without compensators in the directional valves. Hydraulically controlled LS-pump.
Load sensing with up-stream compensator for each connected directional valve. Hydraulically controlled LS-pump.
Load sensing with down-stream compensator for each connected directional valve. Hydraulically controlled LS-pump.
Load sensing with a combination of up-stream and down-stream compensators. Hydraulically controlled LS-pump.
Load sensing with synchronized, both electric controlled pump displacement and electric controlled valve flow area for faster response, increased stability and fewer system losses. This is a new type of LS-system, not yet fully developed.
Technically the down-stream mounted compensator in a valveblock can physically be mounted "up-stream", but work as a down-stream compensator.
System type (3) gives the advantage that activated functions are synchronized independent of pump flow capacity. The flow relation between 2 or more activated functions remains independent of load pressures, even if the pump reaches the maximum swivel angle. This feature is important for machines that often run with the pump at maximum swivel angle and with several activated functions that must be synchronized in speed, such as with excavators. With type (4) system, the functions with up-stream compensators have priority. Example: Steering-function for a wheel loader. The system type with down-stream compensators usually have a unique trademark depending on the manufacturer of the valves, for example "LSC" (Linde Hydraulics), "LUDV" (Bosch Rexroth Hydraulics) and "Flowsharing" (Parker Hydraulics) etc. No official standardized name for this type of system has been established but Flowsharing is a common name for it.
Perhaps you will explain how it works.
Load-sensing systems (LS-system) generates less power losses as the pump can reduce both flow and pressure to match the load requirements, but requires more tuning than the CP-system with respect to system stability. The LS-system also requires additional logical valves and compensator valves in the directional valves, thus it is technically more complex and more expensive than the CP-system. The LS-system system generates a constant power loss related to the regulating pressure drop for the pump regulator:
Power loss = \Delta p_{LS} \cdot Q_{tot}
The average \Delta p_{LS} is around 2 MPa (290 psi). If the pump flow is high the extra loss can be considerable. The power loss also increases if the load pressures vary a lot. The cylinder areas, motor displacements and mechanical torque arms must be designed to match load pressure in order to bring down the power losses. Pump pressure always equals the maximum load pressure when several functions are run simultaneously and the power input to the pump equals the (max. load pressure + ΔpLS) x sum of flow.
Five basic types of load-sensing systems[edit]
Load sensing without compensators in the directional valves. Hydraulically controlled LS-pump.
Load sensing with up-stream compensator for each connected directional valve. Hydraulically controlled LS-pump.
Load sensing with down-stream compensator for each connected directional valve. Hydraulically controlled LS-pump.
Load sensing with a combination of up-stream and down-stream compensators. Hydraulically controlled LS-pump.
Load sensing with synchronized, both electric controlled pump displacement and electric controlled valve flow area for faster response, increased stability and fewer system losses. This is a new type of LS-system, not yet fully developed.
Technically the down-stream mounted compensator in a valveblock can physically be mounted "up-stream", but work as a down-stream compensator.
System type (3) gives the advantage that activated functions are synchronized independent of pump flow capacity. The flow relation between 2 or more activated functions remains independent of load pressures, even if the pump reaches the maximum swivel angle. This feature is important for machines that often run with the pump at maximum swivel angle and with several activated functions that must be synchronized in speed, such as with excavators. With type (4) system, the functions with up-stream compensators have priority. Example: Steering-function for a wheel loader. The system type with down-stream compensators usually have a unique trademark depending on the manufacturer of the valves, for example "LSC" (Linde Hydraulics), "LUDV" (Bosch Rexroth Hydraulics) and "Flowsharing" (Parker Hydraulics) etc. No official standardized name for this type of system has been established but Flowsharing is a common name for it.
Tx Jim
New Member
J_J
Were you referring to my statement about a plain open-center valve operating on a CCLS system while plugged into the rear remotes??? Yes it defeats the purpose of CCLS but it will work correctly unlike an open-center valve on a JD closed-center system which won't operate properly.
Were you referring to my statement about a plain open-center valve operating on a CCLS system while plugged into the rear remotes??? Yes it defeats the purpose of CCLS but it will work correctly unlike an open-center valve on a JD closed-center system which won't operate properly.
banjodunn
Veteran Member
CJONE
Veteran Member
It will run it no problem but be aware of heat issues. I have seen systems with restrictions [poorly designed] that had heat issues when you turn it into a open system like you are doing. CJ
