Let's build the biggest non commercial splitter ever!
- Thread starter NH Mike
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perkins78
Member
- Joined
- Aug 17, 2011
- Messages
- 35
- Location
- Fairfield Illnois
- Tractor
- KUBOTA B3300SU/ Bad boy 36hp 72 cut/ vac case
This is going to be a great project. I could imagine is making this thing self-propelled. and also having a crane and grapple such as the ones that load a logging trailer
logging trailer with grapple - Google Search
muddstopper
Veteran Member
With 60 gpm, this is the smallest valve he can get by with,. This one is a v70 with air shift. Holding a 60gpm valve lever by hand gets old after a while. This valve will cost over $1000 new, and I havent ever seen one this size on a dozer, trackhoe or similar construction equipment. So good luck looking for used at the scrap yard. A better bet when looking for used might be to try and find a electric solenoid valve, altho, most that size I have seen have been closed center. But since you also need a very large pump, going with a varible displacement pump, might make the project a little more pocketbook friendly.
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perkins78
Member
- Joined
- Aug 17, 2011
- Messages
- 35
- Location
- Fairfield Illnois
- Tractor
- KUBOTA B3300SU/ Bad boy 36hp 72 cut/ vac case
Now i'm just trowing this out there for some thought. At surplus center there is a 21 gpm solenoid valve for 120.00 sub plate to match 35.00 get three of each tee them up run them off of single toggle switch. Also you may be able to save buying two smaller pumps instead of one large one to run the big ram. and maybe a third smaller pump for log lift, crane with grapple, hydraulic winch, or what ever else we may dream of.
muddstopper
Veteran Member
wouldnt work, to do so you would have to split your flow with divider valves, pass thru the solenoid valves and recombine the flows to the cyl, and then on return do it all over again, very poor setup.
texasranger556
Platinum Member
Why would you need flow divider valves? All the valves would open together and supply the same circuit so I don't see why it wouldn't work.
With that approach I would look for or machine a manifold block to split and combine the flow on input and output. It would be complicated and expensive to do it with T fittings.
perkins78
Member
- Joined
- Aug 17, 2011
- Messages
- 35
- Location
- Fairfield Illnois
- Tractor
- KUBOTA B3300SU/ Bad boy 36hp 72 cut/ vac case
Very poor setup? Not really a set up as of yet maybe just a idea that could be built upon to accomplish the task at hand. It seems to be some very narrow mind set on this forum.
muddstopper
Veteran Member
Each valve would need its own in and out ports and none of the d3 subplates are big enough to handle 60+gpm of flow. This means you would have to use a seperate subplate for each solenoid valve The out port on the pump would have to be tee'd or divided into three seperate flows before it reached the three subplates and the flows recombined after the solenoid valves before reaching the cyl. Now assuming he was able to pump 60+gpm thru the three valves for cyl extention, the flow on retraction would be closer to 75-80gp (without doing the math) Even assuming the three subplates did get a equal share of the oil flow, together they are not rated to handle but about 75% of the return old flow. This would necessitate using a dump valve to return the oil back to tank. Now somewhere in all this plumbing mess you would have to tee each hose to that dump valve, or multiple dump valves, before going back to the CV subplates and directly to tank. Yea, it can be made to work, but by the time you buy all the extra parts needed, you could have bought a proper sized valve and not had to deal with a lot of hukabuking engineerings. Also think about what would happen if one of those three solenoid valves sticks or fails, You would be trying to pump the full 60gpm thru one little 5/8 hose and all oil would be directed straight back to tank.
Finding a solenoid valve that would handle 60+gpm flow probably wouldnt cost anymore than buying three of the valves that where suggested. I would look for used valves on large knuckleboom logging equipment that run big bucksaws. Most of those type machines are high flow hyd and should have large hyd control valves.
muddstopper
Veteran Member
I dont think I am being narrow minded at all. I do agreed with part of what you have posted about using double pumps instead of one large pumps, I even suggested the same a few post before you did. As for the three solenoid valve suggestion, I simply thing it is a bad ideal. If I had the valves already in my shop, I too would look for a way to make them work, but I certainly would not go out looking for three solenoid valves with the expressed purpose of doing what you have proposed. Not agreeing with your suggestion doesnt make me narrow minded, its just an opposeing point of view.
texasranger556
Platinum Member
Good point that retraction would up the flow rate. Could add a 4th spool to increase capacity. I agree with everything you said about complexity of using off the shelf do3 adapters. Id only go with the multiple spools if I had access to a mill to build the manifold I needed. OP hasn't said what he has access to for tools, but it sounds like he is willing to spend time to save money.
I like the exchange of ideas here, even if the project never goes anywhere.
He should add a relief valve no matter what he does.
I like the exchange of ideas here, even if the project never goes anywhere.
He should add a relief valve no matter what he does.
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