Hydraulics question

[ron45]

What should I be thinking about when one side of a movement loop works faster than it's opposing side.?

So far I have not seen a subject in the topic pulldown menu that relates to anything I want to ask. A tractor minus hydraulics isn't much better that a team of mules. Yet there is no mention of it in this topic list. I don't care if it's never there is it utterly redundant, you could almost venture into spurious. The only thing worse on a web site is tags. Glad they are not here. I think those are just about generating hits for the website using them.

Ron

 

[Xfaxman]

What should I be thinking about when one side of a movement loop works faster than it's opposing side.?

So far I have not seen a subject in the topic pulldown menu that relates to anything I want to ask. A tractor minus hydraulics isn't much better that a team of mules. Yet there is no mention of it in this topic list. I don't care if it's never there is it utterly redundant, you could almost venture into spurious. The only thing worse on a web site is tags. Glad they are not here. I think those are just about generating hits for the website using them.

Ron

On what?

What is a movement loop?

Need more info and pictures.

 

[ron45]

For a minute I thought my signature stuff was missing or something. Would you believe on a : kioti LK3054XS, backhoe and FEL. Land Pride 6` rear blade with hydraulic cylinder for angle changes. The behavior I'm describing could be on anything that uses a two hydraulic cylinders to extend something and bring it back. If you think about it a minute your other question will come to you. Are you with the nomenclature police? I'll think about my question for a minute and I'll probably have my answer. Thanks anyway.

Ron

 

[Leejohn]

If you are talking about what I think you are, the timing bar is bent or gone. Bty what kind of music are you into?

 

[CDN Farm Boy]

What should I be thinking about when one side of a movement loop works faster than it's opposing side.?

Pizza

 

[VictorW]

The piston shaft detracts volume from a given cylinder compared to the opposing side and therefore less fluid volume is needed for the same axial movement.

 

[LD1]

Posts are very hard to read and understand just what the h*ll you are trying to ask.

When using two cylinders, like the loader lift or curl, the fact that everything is rigidly mounted keeps the cylinders in time.

If you want two cylinders to move the exact same amount (provided they are the exact same size cylinders), then you need to make sure they both have the exact same amount of fluid going to them. Not likely with a simple TEE setup. The odds that the resistance of teh cylinders is going to be identical is slim to none. And fluid will follow the path of least resistance. So lacking a rigid setup or "timing" bar, they make what is called a rotary flow divider. One in port, and two out ports. Provides the exact same flow out BOTH exit ports regardless of load on the cylinder. One cylinder could have a load and need 2000PSI to move, and the other have nothing and only require 10 PSI to move....with a tee, the cylinder with no load will fully extend before the one that is loaded will even start. But a rotary flow divider will make them both move the same.

Not sure why you want to know this. I cannot think of anything on a CUT or CUT implement that would require this

 

[countrybumpkin]

For a minute I thought my signature stuff was missing or something. Would you believe on a : kioti LK3054XS, backhoe and FEL. Land Pride 6` rear blade with hydraulic cylinder for angle changes. The behavior I'm describing could be on anything that uses a two hydraulic cylinders to extend something and bring it back. If you think about it a minute your other question will come to you. Are you with the nomenclature police? I'll think about my question for a minute and I'll probably have my answer. Thanks anyway. Ron

Good luck with getting much help from people, no need to respond like this when all he was doing is trying to help.

 

[BHD]

If one needs to have two cylinders work in unison that is in not in a rigid frame that has little or no twist,

then one needs some type of flow divider to feed both cylinders, regardless of the load on each cylinder,

the other possibility is the use of (I think there called re-phased or timed cylinders), and they have there flow that feed from one cylinder to the next, many large implements use them to control the lift so it is even, across the machine. (but they are special matched cylinders, not just off the shelf unit.
Chief TCR - Re-phasing Tie-rod Cylinders - YouTube

 

[BHD]

or the other possibility is a torsion bar system that make both work together, in some way,