Why float valve for Boxblade tilt?

[KTM300]

I have a B3030 with one Double Acting rear remote installed used mostly for a top link. I'm interested in a hydraulic tilt link and have been reading posts. From the Kubota catalog, in the second position I can install either another DA or a Float Detent Valve.

I've heard posters mention wanting the float valve for a tilt cylinder. What's the advantage there?

Wouldn't the boxblade then follow the contour of the ground without cutting in at either edge?

Wouldn't that make it difficult to initially cut a ditch if the side wouldn't maintain the angle it's set to?

Does the Float valve only float in detent?

Does it stay put when not in detent?

I would think the DA valve would ensure the boxblade would maintain the angle set by the operator so it would cut in.

If a Float valve would maintain it's position when NOT in detent, then follow the contour when IN detent then I can see that being useful.

What part of this am I getting wrong?

Thanks,

KTM300

 

[wvpolekat]

If a Float valve would maintain it's position when NOT in detent, then follow the contour when IN detent then I can see that being useful.

And, the float valve does just that. Just like on a loader.

 

[MtnViewRanch]

If a Float valve would maintain it's position when NOT in detent, then follow the contour when IN detent then I can see that being useful.

What part of this am I getting wrong?

Thanks,

KTM300

You have nothing wrong, this is what you want. If you are smoothing a surface, and your intentions are to only smooth out a surface and not change the grade, putting the side link in float mode works very well. You CANNOT do this with a cylinder that has a check valve mounted on it. (dpocv)

 

[KTM300]

You have nothing wrong, this is what you want. If you are smoothing a surface, and your intentions are to only smooth out a surface and not change the grade, putting the side link in float mode works very well. You CANNOT do this with a cylinder that has a check valve mounted on it. (dpocv)

So the trade-off is a FLoat valve will allow you to follow a contour in detent but may not hold a non-detent position as good as a Double-Acting valve with a check valve.

Does the Kubota Float Detent valve have a detent at each end so the box blade can follow a contour at either the left or right extreme, or is the detent in the center of the lever throw?

KTM300

 

[dex3361]

The float is only in the forward movement of the lever. I only have the float detent on the top part of top and tilt. I had not thought about using it for the tilt function but I use it all of the time on the top function.

 

[SPYDERLK]

So the trade-off is a FLoat valve will allow you to follow a contour in detent but may not hold a non-detent position as good as a Double-Acting valve with a check valve.

Does the Kubota Float Detent valve have a detent at each end so the box blade can follow a contour at either the left or right extreme, or is the detent in the center of the lever throw?
KTM300

Well ... Your loader holds position well when not in float doesnt it? Thats what you could expect with the auxilliary valve too. In most cases leakage when the valve is in centered position is very slight so any short term position holding is excellent.
larry

 

[MtnViewRanch]

This is what I have found on my "TnT" sets and I have no check valves. On my Mahindra 3215, I have 2" diameter cylinders, after an hour or so of none use (implement is just up and I am using the loader) I notice that the cylinders have moved a bit. Normally this is not a problem because I very rarely have an implement in one position for very long. Normally when I am using an implement on the 3pt I am constantly adjusting it. My Mahindra 7520 has 3" cylinders and I have not noticed any movement with those.

 

[KTM300]

I appreciate all of the replies. I have a much better understanding now. It sure is nice to be able to think about thinks and ask follow-up questions rather than stand in front of the dealer and try to understand everything on the spot. My follow-up questions usually don't come to me until I'm half-way home.

KTM300

 

[HydrauLink]

I have a B3030 with one Double Acting rear remote installed used mostly for a top link. I'm interested in a hydraulic tilt link and have been reading posts. From the Kubota catalog, in the second position I can install either another DA or a Float Detent Valve.

I've heard posters mention wanting the float valve for a tilt cylinder. What's the advantage there?

Wouldn't the boxblade then follow the contour of the ground without cutting in at either edge?

Wouldn't that make it difficult to initially cut a ditch if the side wouldn't maintain the angle it's set to?

Does the Float valve only float in detent?

Does it stay put when not in detent?

I would think the DA valve would ensure the boxblade would maintain the angle set by the operator so it would cut in.

If a Float valve would maintain it's position when NOT in detent, then follow the contour when IN detent then I can see that being useful.

What part of this am I getting wrong?

Thanks,

KTM300

We offer a product you should take a look at: HydrauLink. Its patented design offers some benefits like you are describing here plus a few more that competing designs simply can't match.

 

[MtnViewRanch]

We offer a product you should take a look at: HydrauLink. Its patented design offers some benefits like you are describing here plus a few more that competing designs simply can't match.

Now I'm really confused. :confused2: In what way does your top link have anything to do with a side link? :confused3: I understand that you are trying to push your product here,:thumbdown: but I think that you should call it for what it is and nothing else. It is not a replacement for a hydraulic, it is an alternative type of top link with some different characteristics. It surely is not to be used as a side link.

 

[wdchyd]

Adding float looks like a good idea, but how about adding tees at the top link hyd cyl fittings and connecting them together with needle valve between ports (basically does the same thing as "Hydraulink").... open the needle valve when float is needed....close off when not.....that way you don't have to mess with the control valve that operates the top link cyl.....of course you're dealing with different disp on each side of the cyl again, but wouldn't this be a less expensive alternative than the "Hydraulink"??

 

[MtnViewRanch]

Adding float looks like a good idea, but how about adding tees at the top link hyd cyl fittings and connecting them together with needle valve between ports (basically does the same thing as "Hydraulink").... open the needle valve when float is needed....close off when not.....that way you don't have to mess with the control valve that operates the top link cyl.....of course you're dealing with different disp on each side of the cyl again, but wouldn't this be a less expensive alternative than the "Hydraulink"??

I don't see a reason for float on a top link other than with a rotary cutter. Before people get carried away with the Hydraulink, it looks to me that it is made for SCUTs. It is very small and only has a 4" stoke. Most CUTs and utility tractor top links have an 8"-10" stroke, or adjustment.

 

[wdchyd]

Yea, thinking about it again adding needle valve you are just making a S/A displacement cyl....Hydraulink must have an air pocket to allow the rod to retract in....

 

[magicheater]

I installed a joystick 10 years ago to add two more remotes that I needed for a logging grapple. I have what amounts to a double top link set-up (one function of the joystick) and the other the factory remote control. The other function of the joystick (with float) is used for the grapple and w/a selector valve on the grapple, the winch. I put the float on these functions for a reason, If I am winching a log and need to relieve the stress for an emergency situation, float is in the same direction and saves the response time to reverse the joystick. That is how I use the float function in this situation. I also have a homebuilt back blade with down pressure and I use the float function there with the other function being the top cylinder which through geometry and design allows me to select between, above or below, the plane of the wheelbase track. Float is nothing more than equalizing the sides of the cylinder to allow gravity, or other forces in my case, to have their way. It was there so I used it to my advantage.

 

[HydrauLink]

I don't see a reason for float on a top link other than with a rotary cutter. Before people get carried away with the Hydraulink, it looks to me that it is made for SCUTs. It is very small and only has a 4" stoke. Most CUTs and utility tractor top links have an 8"-10" stroke, or adjustment.

HydrauLink actually has a 6" stroke plus an additional 4 1/2" screw end for adjustments.