I too, am in the planning,scrounging stages of building something like a firewood processor.
I have read about the Parker f11 motor, and yes they are pretty pricey.
I have a Fairmont Hydraulic saw that I currently run off of a compact IH tractor (1500psi @ 6gpm @2600rpm on the tractor). It works well, but I bet it would be better at it's full rate of 2000psi @8gpm.
If I use the saw for a machine setup, I would want a longer bar as this one is 16" using 3/8" .050 chain. I have not seen any long bars for this saw yet. I guess I need to take the bar off and do some comparisons?
I don't know if this handsaw will have enough uumph for machine operation though?
My current thinking about building is:
A "V" trough for a log (length not determined yet?)
A hold-down bar incorporating a cleated, powered roller of variable speed & down-pressure instead of a conveyor system.
I'd like to make the trough kinda short and use a roller-stand like on a pipe-threader machine for longer logs
I intend to load the log with a fork lift attachment I previously made to replace my 60" bucket on the FE loader
The machine would be sitting on the ground and be capable of being moved around my property with the fork attachment (channel grooves like on a small dumpster scrap box)
The valves,etc would be on the machine.
The Engine, Pump(s), tank, filters, etc. would be on the power pack (which I intend to build as a separate unit, also fork-lift movable or on a small 2-wheel trailer?)
I want the log to advance to a hydraulic actuated "stop" that can maybe be moved manually for short firewood or upto 24", that function would manual & pinned to frame. It would come down, get touched by advancing log, then retract out of the way.
Log then get cut off, falling down into splitter & get shoved thru a multiple edge splitting wedge with a verticle edge of sufficient length below center-line of the entire splitting wedge to allow a one-edge split of like 4-5" logs?
I may make a separate stand frame the the machine could be put on (optionally instead of simply sitting on the ground) so as to get it high enough to drop the split wood into a dual axle dump trailer (currently building)
The power unit may be this:
65hp Wisconsin gas engine V465D (from a 5' concrete saw)
This engine has a 2" output shaft about 7" long now, and on it is a multi-belt sheave (7-8 grooves?)
My plan is to have sevaral hydraulic pumps, belt-driven in a side-saddle fashion with flange bearing jackshafts and at least 2 belts per pump.
One pump....2-stage log splitter type for splitter
Another pump for everything else, saw, feed-roller/hold-down, length-stop.
I can't see where I would be doing anything else when sawing?
The other functions would be flow limited and/or pressure limited?
I haven't even thought about control vaves yet, although a bunch of 12vdc valves would the cat's %$$, but could add up $$$ real quick.
I have considered maybe using 90vdc electric PM motors with AC drives for some functions as I have used those with 1000-5000w inverters depending on motor size.
I also considered an air cylinder for the length-stop as it would not need to be powereful.
I could use an air cylinder for the log-hold-down too, but it would need to be a "big" one.
Those are some of my thoughts.....luv to compare notes with ANY others....
I do have a lathe, bridgeport mill, gas-drive welder, mig, and all the other common fab tools......plus.....
retired, divorced and love to build things