Sizing hydraulics correctly

[DaveOmak]

I'm contemplating converting my 14T to hydraulics. I KNOW NOTHING about hydraulilcs. I searched the threads and probably used the wrong search terms to find what I thought I was looking for. I would appreciate being pointed in the right direction.
I have a '53 Jubilee. It does not have a live pto. Near as I can tell, the 14t needs 18 hp or so to run at 540 rpm. I read somewhere about installing a pump, where the hand-crank inserts on the Jubilee. Somehow I have to figure engine RPM-Pump cu in-gpm flow-HP required at the baler-motor at the baler/cu in required/gpm required/rpm=H.P. to bale hay? (or something like that). I know I need help. Now you know I need help. What kind on help is debatable!
Appreciate some direction. Dave

 

[tommu56]

my next door neighbor had and old jubilee with a loader the pump was driven like you describe a drive shaft out of the engine crankshaft pulley to pump mounted in the frame in front end.

You would need a tank some were and hose and valves on tractor.

the engine runs faster than the 540 pto speed (I'm not sure what the engine speed is there wasn't a functioning tac on his). and that will have to be calculated in the cubic inches per rpm.

maybe JJ can chime in .

tom

 

[Wayne County Hose]

Dave,

First off, welcome to TBN. Honestly, given your experience and what you would like to do, I would seek out someone near you with some knowledge that would lend you a hand. One hose in the wrong place and you will grenade your new pump. Sure, we can help you, but your best bet is finding someone that can come to your tractor and give you a hand. I surely do not mean to discourage you and please don't take it that way, but you are taking on quite a task for the little experience you have. Good luck. Andy.

 

[kennyd]

Welcome to TBN Dave

I will second WCH's recommendation. I just did a quick calculation and to get a pump and a motor that put's out 18HP is going to take a lot of input HP as well. You will also need large hose, a big tank and a valve. To put it all together you are looking at $1000 easy...

 

[DaveOmak]

Thanks for the reply's. As was written somewhere recently? , "Everyday you don't learn something is a day wasted!"
I am an advocate of buying the tools you need to do a job. Do some book learnin' and "Every day you learn something is a day that don't count toward your days here on earth."
I could hire someone and empty my pocket. I could learn something and fill my head with knowledge.
My pockets are empty and so is my head.
I need to have some direction as to where to look. I don't know the correct words to use a search engine to find what I need to know. If you know of a web site that might get me started, you willl have given me a great start. Consider yourself Dave's new mentor. Everyone has or has had a mentor somewhere in time.
I'm 61 and still trying to learn. I've been farming for 4 years. Long stretch from a factory. Doin' my best.

 

[Wayne County Hose]

Dave, nobody said to drop it off, pay someone, and pick it up when it's done. All I recommended is to befriend someone that can HELP you do it. Here at TBN, my take is that we are all DIY's. Heck, the guys here don't even like to bring stuff back for warranty, we would rather repair it ourselves.
My whole point is that I would hate to see a hard working man dump money into this, put one hose in the wrong spot, and grenade a $500 pump. It's very difficult for us to do something like this via computer. I am almost entirely self taught in my trade so I do know where you are coming from. Take a peek at my sig below. I am the epitome of trying and persistence. However, you at least need to know where you are going before you begin a journey.

Andy

 

[J_J]

Hi Dave,

You see similar pump situations on garbage trucks. What I would envision, would be an adapter to hook up to a pump sized for the HP, which you say is 18. Now the pump will be running at the rpm pf the engine, so if the engine is running at say 2500 rpm, that will run a pump , putting out 9 GPM, at 3000 psi. would require a pump with a cu in displacement of .8 cu in. Then you need a valve with as many functions as you want, and hoses to go where ever, and something to hook them to.

You seem determined, so ask the questions and we will try and answer. There are a lot of smart people on here willing to help. Sharing knowledge is a blessing in itself. No reason to keep it all locked up.

 

[DaveOmak]

J J Thanks,
If I can use your numbers, does 9 gpm @ 3000 psi equal 18 hp? If that is a fair assumption, then I would size the motor on the baler to run say at approx 450 rpm.
(2500 motor rpm/450 baler rpm X .8 pump ci = 4.444 motor ci on the baler)
Would I need 18 gpm @ 1500 psi to also equal 18 hp?
Maybe I am lost but at least now you know where I am starting from.

 

[kennyd]

Dave, What is your max budget for this project? I am re-thinking the estimate I made earlier is way low....

Anyway-here is a link to some great calculators to do some figuring.

Baum Hydraulics

 

[J_J]

J J Thanks,
If I can use your numbers, does 9 GPM @ 3000 psi equal 18 hp? If that is a fair assumption, then I would size the motor on the baler to run say at approx 450 rpm.
(2500 motor rpm/450 baler rpm X .8 pump ci = 4.444 motor ci on the baler)
Would I need 18 GPM @ 1500 psi to also equal 18 hp?
Maybe I am lost but at least now you know where I am starting from.

If your pump is a 3000 psi , then the motor would have to be 3000

Pump

HP required--18
GPM---------9
engine rpm---2500
pump disp---.8 cu in

Motor = 3000 psi

flow---------9 GPM
motor cu in--4.6
RPM---------450
motor torque-1061 or 88.75 ft lbs

I believe this is all correct.