Re: TnT: Kubo ata\'s vs Integration Engineering, Part 2
<font color="blue">Rat,
You might want to have your hydraulic system checked when the unit is hot. Kubota does not list their working pressure for the exterior hydraulics but it should be around 2000 PSI. At 2000 PSI a 50MM cylinder like the IE system uses should have enough force to lift anything the tractor is safely capable of lifting. Remember that the hydraulics function properly when the engine is running close to the 540 RPM mark on the tractors tachometer. Since you have a larger cylinder you have even more force. Maybe the relief for the rear couplers was not properly set or you may have some other hydraulic system issues going on. </font>
I did leave out enough info here to confuse everyone. I use my back scraper frequently in reverse moving large piles of broken dirt. In doing so, I frequently adjsut the top link the entire time I'm moving. What I am working against is not a static load but one that is variable and typically much great then the static at rest load which most any size cylinder should be able to work. I have a built in PSI gauge on my tractor so knowing what my pressure is always available to me. It does not change within the accuracy of the gauge whether it's cold or hot. I have the stock cylinders from Kubota and must assume they are sized within the tractors strength configuration. My Harley landscape rake is a beast and while I am sure the IE's top and tilt cylinders could move it in a static situation, it would be questionable if it could do it in a dynamic situation. The problem with the Harley is not just it's weight, but the length behind the tractor and how much of that weight is situated all the way at the back of the rake. I must have my loader on in order to use it. I never operate my hydraulics at PTO RPM. I find my pressure is at full pressure even at 1800 RPM once my cylinders charge. I prefer the loader speed at about 2000 RPM, at PTO speed, the LA 723 is so fast, it needs to be feathered the enite time it is operated. I just choose to use 2000 to 2300 RPM max and find the combination of speed and power to be the best or similar to PTO speed. Rat...
