want to run 44' seedmaster with 835

[waymar]

have an open center hyd system to run air seeder fan, has anyone done this. will heat be an issue? need constant 8 gpm for wing pressure.

please help

[cnh007]

You won't be able to do it with that setup, your gonna have to look into some sort of auxilary hydraulics package or a different tractor.

[duchek]

Are you sure on that 8 gpm? I thought they only take 3-4 gpm for the wings.

[ninety420]

I think that would be a wreck the active pressure will have the relief valve on the tractor squealing. The 8 gallon or 3-4 gallon requirement depends on which cycle the active down pressure is in. Pulling the shanks out or engaging them in requires bigger flow but just holding them in doesn't require much.

My experience with the seedhawk happened this fall. I was running a 66 ft and a bg. 6550 with two fans on two circuits. We had a 9530 with just the 48 gallon pump and I thought the flow was pretty much used up. The fans would drop speed on the headlands whenever the shanks were cycling up and down on the headlands

[dieseldust]

talk to greg @ GT Hydraulics in Stettler Alberta, very knowledgeable he will know if its possible or will set u up so it will work

[alfred]

you need closed centre hydralics because open centre circulates all the flow all the time and if you dont use all the flow the excess has to go past the relief valve causing the system to get hot you need a designation 6 tractor or newer or you need to modify your system

[waymar]

i know the system that is on it runs a single fan setup with no issues, and the seedmaster rep said acctually you need around 10GPM.
I run my own repair shop off the farm and am helping a neighbor out trying to figure this dilemma out. I think when he bought this new drill he bought the cart before the horse, he is not really keen on buying a different tractor. What shocks me the most is why the salesman even sold it to him knowing he did not have the proper tractor.
I priced out the closed center system from atom jet and that runs around $15k , has anyone out there did an open to closed center swap??????

thanks

[SouthernSK]

With open center hydrolics you want the pump sized for what ever oil flow you need. If you need 10gpm than you want a pump that will put out 10gpm of oil at the rpm you will be running. What type of air cart is he running? You should figure out what the oil requirement is for the fan that is on it. It is possible that if he needs 14 gallons for the air seeder fan and 10 gallons for the seemaster he may be able to do both with one larger pump dedicated to those two jobs. What age of versatile is it? If it is a 1978-1979 they only had one pump on the side of the engine and it is very easy to add a 2nd pump to take care of the rest of the hydrolic needs. We did this with a 875 and it worked excellent. Every gallon of high pressure oil that is not used is one horsepower of heat. If you have a 20 gallon pump and only use 10 gallons of the flow you will develop 10 horsepower of heat which will create a lot of problems. The only other option is to run a small diesel engine like the old concords to drive a hydrolic pump that is sized for the job. If you are plumbing up a new hydrolic circuit with flow control valves etc. make sure you pumb in a relief valve ahead of anything else in case something isn't done right the oil will bypass and not blow up the system. Closed center hydrolics can also have heat problems if they are not sized right or if you have to different demands that require different pressures from the same pump. We had lots of problems with a closed center system on a tractor when we tried to run both a hydrolic sprayer pump that ran on lower pressure and a raven auto height sytem that required small flow but at a very high pressure. We had nothing but heat issues till the auto height system was converted back to open center by raven. You should find out what pressure the seedmaster system requires besides the flow.

[pursy]

We use to run an 895 on a JD 1890 drill that also needed constant down pressure to the openers. On JD's website there is a kit that we ordered for the drill called an "open center hydraulic check valve" kit. This basically maintains your opener pressure when the tractor valve is put back into neutral. It worked very well on this system might be worth looking at but I have no experience with a seedmaster other than they also need constant down pressure. Click on the features section and scroll down to hydraulics for more info.

JohnDeere 1890 No-Till Air Drill Series Air Seeding JohnDeere.com