Homemade log processor saw issues

[Dave177]

Try speaking to these guys, They should be able to help you out with the complete saw unit, however it wont be cheap but good things never are!

 

Industrial Hydraulic Equipment, Industrial Hydraulics Services | Approved Hydraulics

 

Otherewise why not contact the factory built processor manufacturers and ask to buy a replacement saw motor, that way you know it will work for the intended application.

 

finally what about ditching the saw completely and going for a shear type set up instead of the saw. You may have to put a cone splitter on the digger instead of the grab to break down large wood if thats what you are processing but it will be a lot simpler.

[jmsport101]

Parker f11 or f12 motor or any gear motor of a similar spec not an orbital motor as per your link. There was a homemade processor on ebay a while back which had a complete unit from a farmi or japa.

[Chipy]

I'm a happy man thanks to M Large in Ireland. They were more than happy to supply me with a complete new saw unit off a Hakki Pilke machine costing £800 for everything in this picture and parts 6 and 15 from the 2nd picture I'm posting. Parts 6 and 15 is for the saw to pivot on. Price also includes 20" harvester bar and chain. Only thing I forgot to ask the guy is for the lubricating part so will ring tomorrow.

Edited February 17, 2016 by Chipy

[Chipy]

Parts 6 and 15

[rowan lee]

Nice one Chipy. Hope it works well this time round. You'll have to edit a video of that setup of yours when you get timber jacking.

[treequip]

I'm a happy man thanks to.............................

 

Sounds like you need to cannibalise a harvester head for the motor and guide bar

 

 

 

 

Don't mention it, Oh, I see you didn't, Ho hum:laugh1:

[Chipy]

[Chipy]

I have the saw now. After speaking to approved hydraulics, it appeares my digger was going to have too much flow (70 lpm) for the small 8cc motor that would have come with the saw and would have destroyed it eventually so approved hydraulics are selling my a 25cc motor for £100 less than M Larges 8cc motor. This way I don't have to dump as much oil back to the tank. According to approved hydraulics I also need a Priority Flow Control Valve to only allow the 30-40 litres the motor needs to get to it and then dump the other 30-40 back in the tank. I'm probably also going to need a case drain back to the tank off the motor just to be safe. Does all this sound correct?

[Chipy]

Finally got the new saw plumbed up and the flipping thing still not working right. The attached picture is to give you an idea of how we did it. The motor that approved hydraulics supplied me is a 22cc motor as apposed to the 8cc M Large would normally supply with this saw. This was so that I wouldn't have to dump most of the 70lpm of oil coming from the diggers pump. The pressure coming from the digger is 2000psi which should be enough for the saw. The issue I'm having is the ram pushing the saw down isn't very smooth. Its bit jerky. The saw also stalls in the log which would make me think its a pressure issue. I think the flow is plenty because the saw spins very fast. The thing I'm not sure about is whether its ok to T off the ram pipe from the main flow pipe and then to T off the ram pipe to the bar oiler? It set up so that 1 spool valve will work the saw, the saw ram and the bar oiler all at the same time.

[Breezeblock]

i think you need to fit a variable restrictor on the downward side of the ram and and adjust it so that the ram operates smoother also check that the return from the motor is free to tank and large enough you might get away with combining the case drain into this line as your motor is only travelling one direction take the bar oiler of the line and fit an orifice into the line and tap it into the return side of the motor that should provide enough flow for your bar make sure that your ram isn't bypassing as well your 70l/min at 2000 psi equates to about 16hp at the motor excluding losses so there should be plenty of power as long as there is no other leakage in the system