Ride on Tracked Dumper-Hydraulics

[AKKAMAAN]

...two reversible hyd motors...

Interesting....do you have a link to one of those...never seen one.....:licking:

 

[J_J]

Well , I just happened to find this one, but even though they said it was reversible, maybe not, you know printing error. This might be one of those rare ones, that you only see once in a life time.

https://www.surpluscenter.com/item.asp?item=9-7906-50&catname=hydraulic

 

[AKKAMAAN]

Well , I just happened to find this one, but even though they said it was reversible, maybe not, you know printing error. This might be one of those rare ones, that you only see once in a life time.

https://www.surpluscenter.com/item.asp?item=9-7906-50&catname=hydraulic

For me "reversible" and "bi-directional" is two different things.....there is a lot of bi-directional motors available....but a reversible motor is not to be found.....
Edit: I can see that your link call it "reversible"...oki dokie....learn something every day

 

[David Devuono]

Thanks J J for the info on the speed and ft lbs. As the motors were cheap, it would not be out of line to purchase larger motors. My pump has a rating of 10 GPM at 1,000 rpm but lists max RPM of 3000 RPM. Initially I will be running the pump at 1650-1750 rpm with the engine against the govenor. I am crossing my fingers that the motors are more like 5 cubic inch motors and while the speed might be the same (400 RPM is my goal) I should have 50% more torque than in your calculations. I am also looking at a 10inch dia drive wheel wheels so if I can achieve 150 ft lbs into a 10 inch wheel (x 2), I am hoping that will be enough.

 

[David Devuono]

I have obtained the specs on my Hy-Spec BMP200 motors. They are 12.1 cu\rev 1990ft\lb cont. and 3090 ft\lb int. So its going to require 10gpm per side to drive my buggy at 7MPH (12kmph) I am looking at a pump output of approx 18gpm. It looks like I should have some reasonable speed and I could put as much as 250 ft\lbs intermitently to each track if I do not use a flow splitter. I am going with two motor spools with power beyond, (third 3 spool valve for blade and dump box)a system relief valve set for 2000 PSI initially and a relief valve on each motor circuit to prevent locking up the tracks. Not sure what to set them up for, I know the motors can handle 2450 PSI intermitently so maybe I will set the motor circuit relief valve for 2000psi as well.