Hydraulic hitch for a 1.8t

Vinpetrol

Vinpetrol

Well-known member
As it’s a Volvo there’s no aux pedal that you could divert for rotate I suppose?

I’d try a divertor on the boom as Druid suggests, and control it from a momentary (non latching) button on the left joystick.

Cheap enough to try, but if you like it you’ll need another grand for smaller grader at least!
Yes that’s right doob , it already uses the boom offset slew to divert to the one service already on the boom as standard . I did wonder if a track service could be diverted ? Never heard of it done before right enough . That Nordic bucket of Aiden’s in a slightly smaller size would be perfect . The rest I will likely convert and share between the 2 machines
 
Vinpetrol

Vinpetrol

Well-known member
Yes that’s right doob , it already uses the boom offset slew to divert to the one service already on the boom as standard . I did wonder if a track service could be diverted ? Never heard of it done before right enough . That Nordic bucket of Aiden’s in a slightly smaller size would be perfect . The rest I will likely convert and share between the 2 machines
I think that’s how my grab on the duck works with a diverter on the rotate lines
 
Vinpetrol

Vinpetrol

Well-known member
of course there is always the Cetop route :ROFLMAO::p:p
will give you multiple prop. dual op. services from one prop. line ;)
's how my VA-r is plumbed

where's me tin hat :ROFLMAO::ROFLMAO:
Can you have prop control this way ?
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Can you have prop control this way ?
provided the feeding service is prop. - yes ...
the disadvantage is that the service providing the supply is the controlling factor over flow rate and the cetops then split that flow to however many functions you're running at any given time.

So if (for example) you're using it to run a tilty, only operating one function, that will get full flow, operate say tilt and rotate simultaneously and the given flow will get shared, so could not rotate slowly and tilt quickly - it's basically the old button control, but with prop. flow control at source, (originally they were simple on/off, non prop. and was a stab, stab type of action [on the buttons], to get motion).

dare say Aiden could come up with some prop. cetops and roller controls - at a price :rolleyes:

@TiltyShaun 's little Kub has run this system for years - mine is exactly the same and functions perfectly well - you get used to how it works - select motion and give it oil - can add a motion as you go too, without any real dramas ... main thing to remember really is to select one function before activating the prop. feed - selecting a primary function after giving it feed will result in it coming in with a jolt. selecting a second motion/function is a lot less dramatic.

now I have some decent 'net speed, I ought to put mine on and do a vid. - I can run tilt, rotate, aux/grab and even my hitch, all together
 
TiltyShaun

TiltyShaun

Well-known member
provided the feeding service is prop. - yes ...
the disadvantage is that the service providing the supply is the controlling factor over flow rate and the cetops then split that flow to however many functions you're running at any given time.

So if (for example) you're using it to run a tilty, only operating one function, that will get full flow, operate say tilt and rotate simultaneously and the given flow will get shared, so could not rotate slowly and tilt quickly - it's basically the old button control, but with prop. flow control at source, (originally they were simple on/off, non prop. and was a stab, stab type of action [on the buttons], to get motion).

dare say Aiden could come up with some prop. cetops and roller controls - at a price :rolleyes:

@TiltyShaun 's little Kub has run this system for years - mine is exactly the same and functions perfectly well - you get used to how it works - select motion and give it oil - can add a motion as you go too, without any real dramas ... main thing to remember really is to select one function before activating the prop. feed - selecting a primary function after giving it feed will result in it coming in with a jolt. selecting a second motion/function is a lot less dramatic.

now I have some decent 'net speed, I ought to put mine on and do a vid. - I can run tilt, rotate, aux/grab and even my hitch, all together
Happy with how mine works on the little Kubota. When I jump into the Kobelco which is on the rollers I still find my left foot press down!!
 
Vinpetrol

Vinpetrol

Well-known member
provided the feeding service is prop. - yes ...
the disadvantage is that the service providing the supply is the controlling factor over flow rate and the cetops then split that flow to however many functions you're running at any given time.

So if (for example) you're using it to run a tilty, only operating one function, that will get full flow, operate say tilt and rotate simultaneously and the given flow will get shared, so could not rotate slowly and tilt quickly - it's basically the old button control, but with prop. flow control at source, (originally they were simple on/off, non prop. and was a stab, stab type of action [on the buttons], to get motion).

dare say Aiden could come up with some prop. cetops and roller controls - at a price :rolleyes:

@TiltyShaun 's little Kub has run this system for years - mine is exactly the same and functions perfectly well - you get used to how it works - select motion and give it oil - can add a motion as you go too, without any real dramas ... main thing to remember really is to select one function before activating the prop. feed - selecting a primary function after giving it feed will result in it coming in with a jolt. selecting a second motion/function is a lot less dramatic.

now I have some decent 'net speed, I ought to put mine on and do a vid. - I can run tilt, rotate, aux/grab and even my hitch, all together
So If I did it this way say from a track motor I’d need the track pedal pushed all the time to get the flow once the diverter was pressed . So if I press the track pedal full flow the cetop valve would deliver the prop control ?
 
doobin

doobin

Well-known member
So If I did it this way say from a track motor I’d need the track pedal pushed all the time to get the flow once the diverter was pressed . So if I press the track pedal full flow the cetop valve would deliver the prop control ?
No.
Simple terms:

You’ll only get proportional flow from a roller on a joystick if you fit a cetop valve somewhere, which may not even be possible on your machine. If you can get a permanently live flow from the machine (as if you were fitting a tilty with control pack) then you might be able to mount one down the boom and a roller in the left joystick to control it. Possibly you could have latching switch on your current aux to supply this and then use two cetops on the boom to supply tilt/rotate. But all to do with open/closed centre hydraulics etc- it needs to be able to be live without pulling the rest of the machine down. Speak to @CPS

If you use a mechanically variable spool (pedal) to provide variable flow, you can then divert that variable flow into an aux by pressing a momentary button. If you use track pedals I think you’d need two divertors- one on a latching pedal to isolate the pedal and a second momentary one to supply the tilty. Otherwise you will have to be perfectly synced with pressing the pedal and the button- or you’ll have the track jerking around all the time.
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
So If I did it this way say from a track motor I’d need the track pedal pushed all the time to get the flow once the diverter was pressed . So if I press the track pedal full flow the cetop valve would deliver the prop control ?
only if it was a prop cetop. on/off cetops simply route the oil where you want it to go and your prop. service providing the oil controls the flow rate

I use my rotate service on a pedal to provide flow to my VA-r's cetop bank, which in turn, determines which function(s) gets oil and in which direction it/they operate
 
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