what are the functions you need to control up front?.Thanks Bill, mainly cutting a large laurel hedge, er indoors feels that the flail is a bit too aggressive That's what I thought I would need but finding out how its done and what i need is proving to be a problematic.
Excellent, very helpful thanks very much.what are the functions you need to control up front?.
norm's right about the flow divider, it will allow a motor to run constant, altho you would have to figure out the speeds you need and size a hyd motor to suit about half of what you do have right now.
your looking for something like this on the cheapest end, (thats 50lpm 3/8 bear in mind, they have bigger, just an example)
http://www.ebay.co.uk/itm/Hydraulic...8-1-2-BSP-50lpm-1-4-Bank-12-24v-/232050279142
if you had a flow diverter valve off the pressure line which one side went to the cutterbar motor and the other side to a 2 bank 2 way valve system like in the link then i take it you would have all three things covered.
the thing that would concern me until youd have some calcs worked out would be the size of the return line on the boom, you can be sure the third service has two pipes running up the boom that are both the same size,I would assume the 3rd service would be more than man enough to run it on a Merlo, as already said they can move some serious oil.
Many years ago when I was helping at the farm part time after school nearly all the hedge trimmers were finger bar I used to spend hours drilling out the old and riveting new cutters on the bars.not sure a finger bar cutter would be good for cutting branches
id doubt there is a function on the switch for the 3rd service for constant pumping so something would have to be organized in the wiring and you would have to see what else suffered once it was constant pumping.
she should be good for what the op wants but you never know what likes oil, a loop pipe on the 3rd service, hold it on and see what dosent want to go fast or work and if you can do without it, nothing may suffer but id be surprised if nothing did.
but that would only control the motor, as stated, then the other services on the attachment would suffer because that line is then limited.JCB's have a continuous 3rd service at the push of a button in either direction (pipe orientation) and you can set the % of the pump flow rate to it as well which allows you to control the speed
how times have moved on from the not so older stuff.I don't know Merlo but newish JCB's have a continuous 3rd service at the push of a button in either direction (pipe orientation) and you can set the % of the pump flow rate to it as well which allows you to control the speed and give other hydraulic functions at the same time. In theory anyway!
That was my first idea, so as to separate the services of the cutter at the cutters control there is a possibility of using both hoses as flow and fitting a larger 3rd hose as a low pressure return.you could run the flow divider up the front norm and hope the flow would of been enough to service all but as we mentioned before, other things would probably suffer.
if he bought the mcconnel one then i wonder what the op's plan is to work it up front as its got 4 cables running from it.That was my first idea, so as to separate the services of the cutter at the cutters control there is a possibility of using both hoses as flow and fitting a larger 3rd hose as a low pressure return.