Why do most tractors with FEL's.........................

[von-mil]

It looks like the curl cylinder on the far side of the tractor has been removed from the loader/bucket. But why?

 

[oosik]

That's how I see it also. The curl cylinder on the "drivers side" is hanging by its hydraulic hoses.

 

[Gary Fowler]

I had to go check my tractors before answering. The LS has the ram attached to the frame while the Kubota has the ram attached to the FEL boom. After looking at all the cylinders including the curl, I am sure they are attached so that the piston seals are facing down to keep water and debris out as much as possible. On the LS the cylinders are configured in such a way that the rod end is facing downhill when attached to the FEL, but on the Kubota the configuration is such that the rod end is facing down when attached to the frame. Both curl cylinders are oriented so that the rod end is facing down. SO one tractor is like the OP's but the other is opposite BUT they all have the barrel of the cylinders sloping downward.

 

[Mysfyt]

I'm sorry, but mounting the cylinder like that makes no sense to me at all. Like the OP states, the hoses now have to travel with the cylinder, less power with the rod side, and now you've got all that leverage from a loaded bucket working on the weaker end of the cylinder at the anchor point. Turn it around and invest in better wiper seals on the cylinder!

 

[oosik]

Jeez - - I had to go out and check mine. Like Gary said my FEL hydraulics are with the piston seals facing down. However, I have my grapple(Land Pride SGC 1560)installed and it has the two hydraulic rams with the seals facing directly UP. And I can see no logical reason why they couldn't be facing down.

Soooo....... there must be some unknown force at work here. Ease of manufacturer, a higher engineering principle at work, luck of the draw................

 

[TMGT]

I'm sorry, but mounting the cylinder like that makes no sense to me at all. Like the OP states, the hoses now have to travel with the cylinder, less power with the rod side, and now you've got all that leverage from a loaded bucket working on the weaker end of the cylinder at the anchor point. Turn it around and invest in better wiper seals on the cylinder!

As has already been stated, the power is the same if the cylinder is turned either way, the geometry and load stays the same so the rod being on the frame side won't inherently be weaker. If you look at how the hoses are routed, they are mounted to the loader arms which moves with base end of the cylinder, makes sense on a quick detach loader to do it this way.

I thought it was odd also, until I spent a lot of time looking at modern loaders while designing one for a SGT, made sense once I laid it out, gives much cleaner plumbing.

With the exception of the L39, Kubota TLB's with the non quick detach loaders have the cylinders flipped with the hoses running on the frame. Not sure why the L39 is different.

 

[SPYDERLK]

As has already been stated, the power is the same if the cylinder is turned either way, the geometry and load stays the same so the rod being on the frame side won't inherently be weaker. If you look at how the hoses are routed, they are mounted to the loader arms which moves with base end of the cylinder, makes sense on a quick detach loader to do it this way.

I thought it was odd also, until I spent a lot of time looking at modern loaders while designing one for a SGT, made sense once I laid it out, gives much cleaner plumbing.

With the exception of the L39, Kubota TLB's with the non quick detach loaders have the cylinders flipped with the hoses running on the frame. Not sure why the L39 is different.

,,,,,,,,Yes

For a look in the mirror:
http://www.tractorbynet.com/forums/build-yourself/130845-why-do-modern-loaders-have.html

 

[oldpilgrim]

It looks like the curl cylinder on the far side of the tractor has been removed from the loader/bucket. But why?

I borrowed the pic from another poster who was doing work on his loader because the cylinder placement i was asking was very clear in that pic.

 

[oosik]

I looked in my old college engineering book. It makes NO difference whether the hydraulic cylinder is in the up or down position. The rod extends and pushes or retracts and pulls. The forces are the same in either the up or down mounted position.

 

[Mysfyt]

Doubling acting cylinders do not have the same power both ways. Its simple math and physics.