Melodeon
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Posts posted by Melodeon
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1 hour ago, irish surgeon said:
Hi guys, quick question, I have a 3.5t kubota and am in the process of putting a rotating finger grab on it. Now my issue is the guy I'm dealing with is very easy to get on with and has gone through everything which I'm happy with but just before I pulled the trigger today and purchased I had a look at the weight of rotator and grab which is 290kg and said to myself am I buying something that's not suitable for machine, now my guy said it will work it no problem but I don't want a machine that's not fluent because the application is too heavy, any thoughts welcome
Hmmm... I'd be shy of hanging 290kg (plus brackets & pipework?) off the end of a 3.5 tonne machine, to be honest.
My brash grapple and fixed rotator totals 167kg according to the spec sheets, plus brackets and pipework, so in the region of 200kg in total I'm guesstimating.
It's nicely matched to the 5 tonne Yanmar ViO 50 (zero-swing machine) it's on, but you'd still need to be careful with anything of consequence in it at full stretch out to the side.
I have a felling head for it that specs at 220kg, plus brackets and pipework, so totalling at around 250kg I'm thinking, which is getting on for being a bit uncomfortable for the machine. You very much have to be careful of overloading/tipping.
Can you dummy up that sort of weight on the digger (plus another 200kg+ for payload) and see how it handles?
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Just another vote for the Intermercato Tigergrip.
Mine's on a Yanmar ViO 50, rigidly mounted through an AVS-Hydraulikmoteren AR-H 70-2.1 (6T/14T) rotator:
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Follow up on the Brunnett low pressure problem:
I disassembled the seat box, control levers, and the forest of steel pipes and unions and got that valve chest out of there and onto the workbench.
After much further disassembly, cleaning, and close examination of all the internal pressure relief valves and seals (all of which were spotlessly clean and appeared to be in prefect working order), I discovered that the main relief valve was loose, and took almost a full turn to snug it back against its seat.
The main relief valve is the only external one on the whole assembly, and is easily accessible in situ on the machine!
Feck
I nailed that whole thing back together again and ran a pressure test.
BINGO! 2100psi!
Much success
She's now lifting like a champion.
Now, about those 30 year old 'flexible' hoses that aren't entirely happy with this new situation...
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It's obviously too late for anyone his year, but for future reference:
My biennial trip to APF via Birmingham airport includes a compulsory stop at Beckett's Farm, on the A435.
Becketts Farm Shop, Restaurant, Conference Facility and Property Lets
Magnificent Full English!
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That's fantastic information folks, thanks!
According to a bit of Google image searching, the valve chest does indeed appear to be a Monsun Tison HV07.
No pilot controls on this old girl, it's 'directly' operated by a system of levers and links that would please Heath Robinson!
This particular valve seems to have been pretty commonly used on lots of cranes and lifting equipment, so it's not utterly unknown in the hydraulics service sector.
Next task, find a schematic/exploded view of the valve!
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While I'm pondering these things...
Who made the valve blocks for these old Bruunetts, does anyone know?
I can't see any sort of identifying mark or text on mine.
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One for the Bruunett 578F aficionados:
What sort of pressure should my hydraulics system be making?
I ask because the main lift on the crane seems to be 'weaker' than I remember.
Other functions appear to be fine.
Plumbing a gauge into the lift ram service gives me 1000psi at high tickover, rising to 1100psi at working revs (1700 rpm approx.)
Tapping into other services is giving 1500psi at tickover rising to 1600psi at working revs.
Even these higher figures look low to me, but perhaps someone can tell me if they're in the ballpark for such an old machine?
My Operator's Manual is telling me about relief valves in the system ranging between 2175psi and 2750psi, so I'm thinking that normal working pressures should perhaps be up around the 2000psi mark.
All filters have been changed and the system refilled with fresh Hy-Tran.
The return filter above the cab in particular was a disgrace, partially collapsed and clogged with bits of instant gasket and rubber off skived hoses!
I strongly suspect that some of this debris is fouling in various relief valves and giving me my poor lifting performance issues.
To my mind, it's looking like I'll be stripping down the pump and valve chest to clean it all out.
Anyone have any experiences or tips to impart before I get the spanners twirling???
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Another chainsaw machine I'm afraid, but I've always been impressed by the Regon R1 when I've seen it demonstrated a few times over the last couple of years.
A lovely tidy little machine (up to 10" logs) with lots of nice details and features:
Wilsons are the UK agents:
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I have a Black Splitter S2 630 (as supplied by the good people at Exac-1) on my Yanmar ViO-50, and it has handled everything I've thrown at it to date.
This includes ugly gnarly Leylandii trunks a meter across at the thick end, and chunks of big old veteran Ash, Beech and Chestnut, in lengths of 1 to 4 meters.
It IS possible to stall it in particularly large/knotty stuff, but it's really only a matter of addressing the victim from the right direction and working with the grain of the timber, exactly as you would do when splitting ugly stuff with an axe.
I haven't tried it on stuff down around 6", but I have no doubt it'd be perfectly capable of doing a nice neat job.
Here it is after reducing a bunch of Leylandii to manageable sizes (the log against the blade is for bracing the work piece):
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That's a handy diverter. Are the hydraulic lines for the rotator on top of the valve there. Is it a quick release coupling system or do you have to take the spanners out when you remove the grab. Also are the electric circuit type you have better then the manual type. Presumably more convenient from the cab.
Where did that valve come from? Cheers.
The valve is a 12V 3/8" Badestnost DVS6-6/2L:
BADESHTNOST Plc. - Hydraulic products, valves, > PRODUCTS
http://hydraulic-vlv.com/files/mf/products/32_file.pdf
Yep, the services for the crowd ram pass through the body the valve and the diverted services to the rotator (in my case) are out the top.
It almost bolted straight into position, except I had to file the holes in the hose mount bracket on the dipper a tiny bit to let it all line up nicely.
Using suitable connectors, all the original hoses on the machine re-fitted without modification.
I also milled a few millimeters off an edge of the valve (opposite end from the solenoid) to allow it fit neatly into position on the dipper.
The new auxiliary hoses duck under the end of the crowd ram and appear out the side of the dipper and terminate under the original rock-breaker hose ends.
I got them made up slightly too short, so the bends in them are a little tighter than I'd like, but they appear to be working fine for the last year or so.
They all terminate in flat-face quick couplings.
The diverter is operated by means of a push button on the left joystick.
Its default position (unenergised) leaves the crowd ram work normally.
Energised (button pushed), the service is switched to the new hoses, giving full proportional control of whatever tool is out there.
I can't crowd AND rotate (in my case) simultaneously, but I haven't found that to be an issue.
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I fitted a changeover valve on the dipper of my Yanmar, into the bucket crowd service.
The solenoid pokes out through a convenient hole, so I fabbed a cover and threaded a few holes and bolted it on.
It's activated by a button on the left joystick, providing full proportional control of the circuit via the right joystick.
I use it for the rotator and it's a joy to use.
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Nice bit of kickback going on at the start there
Looks like a Stihl MS 461-R:
MS 461-R - Emergency services saw
Ludicrously expensive piece of kit if I recall correctly, and replacing the fancy carbide tipped chain would make your wallet scream for mercy!
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That's terrific work, well done!
I'm eventually going to have to do something similar with the centre bearing on mine, but I'm procrastinating manfully for the moment
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One of the modern battery electric saws would suit this sort of thing very well in my opinion.
It'd certainly be safer than faffing around with a running petrol saw over your head fitting it into the socket and attaching the control cords!
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Somewhere in the Netherlands by the look of it:
[ame]
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In my opinion, it'd be hard to beat the mighty Sugoi for this sort of thing:
Fast, aggressive, will handle anything up to 3/4 the length of the blade.
Not suitable for fine pruning cuts on small stuff, but for stripping down and tidying up firewood, I reckon it'd be unbeatable.
I adore my 360mm one!
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Drone recovery is a better earner than cat rescue:laugh1:
They're also much less likely to tear you to ribbons and/or spray you with piss!
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Today I went up 40ft for drone....
Looks like some flavour of DJI Phantom.
Relatively pricy piece of kit, well worth some effort/cost to retreive; I hope you got properly paid for the job!
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All Blackbirds are black birds, but not all black birds are Blackbirds :-)
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Has anyone ever made a kindling knife for a full sized processor, does anyone know?
Something like how the old manual potato chipper works:
I suppose the problem would be making a grid small enough to make kindling that was also strong enough to withstand the splitter ram on the processor.
How about 2 sets of parallel knives, one behind the other, one set vertical and the other set horizontal?
Or perhaps just one set of knives (vertical or horizontal) and run the product through it twice?
I've been getting enquiries for kindling and am wondering if I can do it using equipment already on hand
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I did look at these but at any where from 30 pounds per spanner and a 7 piece set costing over £300 on their website there a bit steep for me!
Have you got a set yourself? what are they like?
I don't personally have those particular ones, but I do have a decent selection of their 'ordinary' Flank Drive combination spanners, and they're nothing short of amazing.
The Flank Drive open ends will often grip and shift damaged stuff that the ring ends are slipping on, and they leave ordinary 'hardware-shop' spanners in the dust regarding fit and finish.
They also look gorgeous and feel fantastic in the hand
A good friend of mine has an even worse case of Heavy Metal Disease than I do, and he has the Reversible Ratcheting Combination spanners linked above.
I've used them in his place and they're every bit as good.
The rachet mechanism is crisp and precise, and the direction lever is nice and unobtrusive but still changes over easily when required.
They're fully rebuildable, but he's never had to repair one yet, and he uses them a lot.
These thing ARE expensive and won't suit everyone's situation, so if someone is prone to breaking or loosing tools or if 'others' have access to the toolbox, I'd be slow to recommend them.
If you're a one-man-band with full control of access to and use of your tools, I'd suggest buying one or two of the smaller 'cheaper' (relatively speaking
) ones and giving them a try. -
If you're willing to pay for the best, it's hard to beat Snap-on's Flank Drive® Plus Reversible Ratcheting Combination spanners:
https://store.snapon.com/FLANK-DRIVE-174-PLUS-REVERSIBLE-RATCHETING-COMBINATION-C629584.aspx
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Differential lock perhaps?
Show us your Arb Diggers please.
in Large equipment
Posted
A though occurred to me: are you sure about that 290kg total?
That's something like 200kg for the grab and 90kg for the rotator, and that size of kit is what's specced for 7 tonne machines rigid mounted and 10 tonners pendulum.
It sounds insane for a 3.5 tonne machine.