Homemade log processor saw issues

[Chipy]

That sounds interesting. Anyone know if this valve can be bought off the shelf anywhere?

[drythropple]

Pm me your email and I will send you parts diagram and a contact email!!

[Chipy]

Now I'm really confused! Guy at Caledonian forestry has told me a solution which no one else has said so far. He said I should have saw piped up like a harvester head is, which is to have the saw ram T'eed into the return pipe not the flow pipe like I have. Straight after the T there should be a needle control valuable which will control the speed at which the ram drops. Would this work?

[Justme]

Now I'm really confused! Guy at Caledonian forestry has told me a solution which no one else has said so far. He said I should have saw piped up like a harvester head is, which is to have the saw ram T'eed into the return pipe not the flow pipe like I have. Straight after the T there should be a needle control valuable which will control the speed at which the ram drops. Would this work?

 

You cant control the ram extension when you are pushing it.

 

It can be pulled out.

 

Your drop control is just the spring at the min. You can force the saw into the log but not hold it back.

 

Set it up the other way with a single acting ram powering it up or set it up as a double acting ram.

 

You have the port already as it looks like a double acting ram.

[Chipy]

Yes it is a double acting ram but I've used all 6 of my spool valves.

I'm going to turn it into a double acting ram and just try it and see if it's the solution. If it is il have to think of a way of extending my block of spools

[Breezeblock]

Now I'm really confused! Guy at Caledonian forestry has told me a solution which no one else has said so far. He said I should have saw piped up like a harvester head is, which is to have the saw ram T'eed into the return pipe not the flow pipe like I have. Straight after the T there should be a needle control valuable which will control the speed at which the ram drops. Would this work?

 

try it you should have most of the parts there already it is worth a go i didn't realise it was a single acting spring return ram you may have to play with spring tension/needle valve to get good results but i can see it working

[Justme]

Yes it is a double acting ram but I've used all 6 of my spool valves.

I'm going to turn it into a double acting ram and just try it and see if it's the solution. If it is il have to think of a way of extending my block of spools

 

To prove it just swap it to power up not down & set the spring to pull it down.

[Chipy]

Finally I have an update for you all. Fitted a motor spool for the saw so it comes to a gradual stop now instead of stopping dead which I was told would do damage in the long run. We also gave the saw motor its own spool valve and the saw ram its own spool. Saw seems to have bit more power now BUT the saw ram is far too sensitive on the lever that controls it. You only have to push it a bit to move it up or down and on our first attempt we snapped the end of the ram off because it flew back up to its park position so we have since learnt from that. This machine needs to be idiot proof because various people use it and someone's bound to do damage unless I can slow the ram down. We tried a needle control valve but ram was still too fast so I'm out of ideas! Someone suggested an electric ram? Could slow it down and wouldn't have too much power that would bend the bar if pushed too hard?

[Chipy]

Also when the saw is fully up, I can't push it with my hand but when the saw is half way down I can push it 6 inch up or down which makes me think there's air in the line but we have bled it various times and can't stop the ram from having this movement in it. I'm presuming the ram shouldn't be able to be pushed by hand what ever position it's in but maybe I'm wrong?

[treequip]

It certainly sounds like air in the system

 

"This machine needs to be idiot proof because various people use it". Hmmmm, ever heard of PUWER?