Looks awesome, thanks for sharing and I'm looking forward to the list!
Here is the current
CAD in FreeCAD format. There is a list with "Issues" on the left where i make notes. (EDIT, the CAD is still in progress, it gets updated. Some snapshops are a mess. let me know if you are having an issue)
Here is a copy of the
bill of materials with links on most of the products
So here is what have so far on the the hydraulics:
2 circuits, 1 for the splitter, one for the saw/winch/6way height adjustment/
1st one:
16hp gas engine (duromax)
2-stage hydraulic pump,
full auto push and retract log splitter valve
5"x 24" cylinder
2nd circuit
18-hp gas engine duromax
0.58ci gear pump
Variable Flow Control valve. It is adjusted so about 9.75gpm go to the Controlled Flow, the remaining go to Excess flow
Excess Flow
Right now goes back to tank, in the future I will add a motor valve and the conveyor motor to that part
Controlled Flow
2spool valve.
1st spool runs the 6-way height adjustment cylinder
2nd spool, on the push action it runs the winching cable, on the pull it releases the load and makes the winch motor free to unwind. I have to add a detent on the pull so the clutch port stays open to the tank when you unwind it
Power Beyond
Solenoid Valve for Sun Hydraulics (DMDA)
Saw motor 0.45ci with 14T sprocket and 0.404 harvester chain on a 27" bar
Here I also have a small loop at the motor ports with a check valve so it will not come to a hard stop when I release the solenoid switch.
I also have a TEE with a check valve and a needle valve that leeks little oil to the chainbar for oiling
The return hoses are 1" that go to a 70gpm filter before the return to a 25gallon tank
The pressure hoses are either 3/4" or 1/2" and a few 3/8" (mostly JIC, makes the life sooooo much easier)
The vacuum hoses are 1.25"
I have 2 pressure gauges on the inlets of each of the 2 circuits(3000psi), and 1 at the oil filter(30psi).
Now on what I would do different....
1st) I would downsize the splitter cylinder, from 5" dia to 4.5" diameter. Reasoning is for speed, and because I noticed that even on the worst round that I split on the 6-way, the pressure did not exceed 1000psi ever on the low speed/high pressure. Actually most of the splits are happening on the high speed/low pressure.
2nd)I would go with a higher motor on the saw circuit. Most likely the 22hp V-twin from harbor freight. Right now, what is rated 18-hp, looks like is chinese hp, maybe pony power... The gas engine bogs down when the saw motor develops 1300psi. I definitely need more power to take advantage of that motor.
3rd) I would not use the sun hydraulics solenoid valve but I would go with a regular monoblock motor type spool valve with a solenoid mounted. That will eliminate the need for that extra loop between the motor ports, but more important it will reduce the heat and the psi that I drop on the DMDA valve. The DMDA with the spool is rated for 12gpm, and I am pushing 9.75. I have 200psi drop here which is psi stolen from the saw motor. I would go with a valve rated for about 20gpm, like the rest valves I used.
4rd) I would add the above valve 1st in the circuit, and run the winch and 6-way through the PB to avoid losing 50psi. The saw is where I need all the power not the winch or 6-way
Now on the mechanical side of the build, there are a lot minor things here and there, I am going to add them to the "Issues" and later to the CAD (on my team's repository link I posted earlier)
Nothing major though.
But the most important thing that I totally regret is
NOT HAVING A COMPLETE CAD DESIGN BEFORE I STARTED FABRICATION. Yes thats my biggest biggest mistake. It took me 6 months to finish this, instead of 1 week. Its soo important. I spent most of the time removing things that are in the way, winching, welding by laying under, cuting and rewelding and recuting.... And I had 90% of the design done....
Anyway.. I am planning to explain the whole machine in a few video series. Until then ask anything guys. And criticize where you think I am wrong
