V519 Compact Telehandler

   / V519 Compact Telehandler #191  

ArmyDoc

Silver Member
Joined
May 17, 2012
Messages
134
Location
Dearing GA
Tractor
MF 245
You are correct on pressure and flow. I would assume flow is proportional to rpm more or less. Things definitely move faster when you raise the rpm. Maybe I could time a cycle with the boom from ground to fully raised to estimate flow at idle vs max rpm
Thanks. That's a good idea, I'll try that.
The reason I asked is that I am getting into forging. Everyone seems to be making forging presses and putting in a hydraulic pump, reservoir etc. I thought to myself, "Self, that's a waste of money. You have a much better pump. Just hook it up to the v519." So now I'm doing some research on that. But there is very little useful info on the Bobcat website....
 
   / V519 Compact Telehandler #192  

hardhat

Silver Member
Joined
Jan 24, 2011
Messages
113

So rated rpm is 2400 rpm. Hydraulic pumps are positive displacement pumps so flow should be directly proportional to rpm until you get into weird stuff like cavitation or leakage around seals.

So if 21.1 gpm at 2400rpm, then you should have 7.9 gpm at 900 rpm idle. If anything it should be a little bit more. Pressure should be same since it is controlled by relief valve and should not be rpm dependent.

The toolcat is good for using as a hydraulic pump for log splitter. It has 28 or so gpm in high flow and you can set the throttle. The v519 just runs at idle and has no throttle control other than gas pedal as far as I can tell. I wish it had an independent throttle lever like the toolcat, but oh well.
 
   / V519 Compact Telehandler #193  

ArmyDoc

Silver Member
Joined
May 17, 2012
Messages
134
Location
Dearing GA
Tractor
MF 245
Thank you! That's a huge help. Tells me that I need to use a 4" bore rather than 3" - because at 8gpm is going to extend at 4 inches per second, which is scary fast. 4 inch bore is 2.5 in/second, which is probably about right. 4 inches will be a 22 ton press, which should be just about perfect for me.
 
 
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