L3560 & LA805 Loader Lane Shark

Indiana Mike

New member

Equipment
Kubota 3560
May 31, 2024
1
0
1
Kansas
Good Morning,
Has anyone recently installed the Lane Shark C-Flow kit on a L3560? I understand that they have released a new loader handle with intergraded control switches for their brush cutter. My question is what happens to the throttle up switch on the Kubota factory handle?
 

TheOldHokie

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Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
7,628
3,800
113
Myersville, MD
windyridgefarm.us
Good Morning,
Has anyone recently installed the Lane Shark C-Flow kit on a L3560? I understand that they have released a new loader handle with intergraded control switches for their brush cutter. My question is what happens to the throttle up switch on the Kubota factory handle?
My understanding was the C-fkow kit only works with the WR Long third function.

I am still waiting for someone to explain the advantage of that complicated and expensive C-flow plumbing over adding a simple maintained toggle switch.

Dan
 

AllenBC

New member

Equipment
L3901, L525 Loader, BH77 Backhoe, Lane Shark LS3, Pallet Forks, Snow Plow,
Jul 10, 2024
1
1
3
Warwick, New York
With a 3rd function kit you have a supply and a return line but the return does not go directly to the tractor motor oil sump; it goes back through the 3rd function valve. If you are running fluid out one line, then fluid comes back in the other so that seems like it would run the Lane Shark fine. But if you stop, both sides of the valve close. That's a good thing for a grapple because it means the jaws stay where they were when you stopped the flow. It's the same for the loader and the loader valve - otherwise the bucket would go to float whenever you stopped raising the bucket.
But it's not a good thing with a hydraulic motor spinning a HEAVY blade because when the flow is stopped the blade will continue to try to turn - the motor becomes a pump pushing fluid to a closed valve. Pressure will build up on the motor return side and the seals will blow out. The C-Flow kit gets around this. It provides a direct connection back to the tractor motor sump through a separate line with no valve to stop it; that allows the blade and the motor to slow down without over-pressuring the motor. There is also a bridge between the pressure and return lines that allows fluid pumped by free-spinning blade to circle around back to the motor so there is neither pressure or vacuum on either side of the motor.
I don't know why the kit is so expensive. The replacement joy stick handle with simple start/stop controller circuit is neat and everything is measured out for a particular tractor model making installation way easier than buying all the connections separately. If you follow directions carefully, all will work whether you understand why or not.
One weird thing is that although WR Long builds the C-Flow kit for Lane Shark cutters, they will not sell it directly to consumers or dealers. Purchase must go through Lane Shark. The only reason I can see is the two companies don't want other implement makers to take advantage of what these two have worked out.
 
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Matt Ellerbee

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Lifetime Member

Equipment
MX6000
Jun 27, 2019
1,798
2,030
113
Canton, Georgia
My understanding was the C-fkow kit only works with the WR Long third function.

I am still waiting for someone to explain the advantage of that complicated and expensive C-flow plumbing over adding a simple maintained toggle switch.

Dan
Looks like it would work with any 3rd function. And seems simple to make with a hand full of fittings and another hose.
 

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
7,628
3,800
113
Myersville, MD
windyridgefarm.us
With a 3rd function kit you have a supply and a return line but the return does not go directly to the tractor motor oil sump; it goes back through the 3rd function valve. If you are running fluid out one line, then fluid comes back in the other so that seems like it would run the Lane Shark fine. But if you stop, both sides of the valve close. That's a good thing for a grapple because it means the jaws stay where they were when you stopped the flow. It's the same for the loader and the loader valve - otherwise the bucket would go to float whenever you stopped raising the bucket.
But it's not a good thing with a hydraulic motor spinning a HEAVY blade because when the flow is stopped the blade will continue to try to turn - the motor becomes a pump pushing fluid to a closed valve. Pressure will build up on the motor return side and the seals will blow out. The C-Flow kit gets around this. It provides a direct connection back to the tractor motor sump through a separate line with no valve to stop it; that allows the blade and the motor to slow down without over-pressuring the motor. There is also a bridge between the pressure and return lines that allows fluid pumped by free-spinning blade to circle around back to the motor so there is neither pressure or vacuum on either side of the motor.
I don't know why the kit is so expensive. The replacement joy stick handle with simple start/stop controller circuit is neat and everything is measured out for a particular tractor model making installation way easier than buying all the connections separately. If you follow directions carefully, all will work whether you understand why or not.
One weird thing is that although WR Long builds the C-Flow kit for Lane Shark cutters, they will not sell it directly to consumers or dealers. Purchase must go through Lane Shark. The only reason I can see is the two companies don't want other implement makers to take advantage of what these two have worked out.
Cflow is just a bypass into a tee ar the power beyond outlet on the third function valve. As such IT IS NOT GOUNG TO TANK. It is going to the next downstresm valve which could be your rear remotes, Thats why the crossover circuit is needed. If you operate the 3pt or a remote while the LS is running you put the LS motor in series with your cylinders and thats just plain crazy.

I think a bettet and inexpensive design is to put a diverter on the PB outlet of the 3rd function and use it to switch the LS on and off. Connect the return on the LS to a real tank return. Much cleaner and no need for a crossover circuit.

No matter how you do it you still have unwanted interactions with the loader and 3rd function valves which are in the PB circuit and upstream of the LS motor....

Dan
 
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Matt Ellerbee

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MX6000
Jun 27, 2019
1,798
2,030
113
Canton, Georgia
The LS website is quite explicit - WR Long only. I sispect its wiring related.
Wiring here seems simple with their control box. I could see a simple toggle switch in place of the box (no seat safety that way though). Basically just need a way to turn on one side of the 3rd function without holding the button down.
 

TheOldHokie

Well-known member
Lifetime Member

Equipment
L3901/LA525, B7200DT/B1630, G2160/RCK60, G2460/RCK60
Apr 6, 2021
7,628
3,800
113
Myersville, MD
windyridgefarm.us
Wiring here seems simple with their control box. I could see a simple toggle switch in place of the box (no seat safety that way though). Basically just need a way to turn on one side of the 3rd function without holding the button down.
I dont know Matt - just repeating what Travis says at the 35 second mark in this video.


Dan
 
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