ScoutB said: (quoted from post at 00:06:53 01/13/14) You can do some cool things with double rod cylinders. I've used them to evenly raise a big load with a shifting center of gravity using a double rod cylinder on all 4 corners. Hydraulic pressure is applied to one end of one cylinder, the oil from the other side goes to the pressure side of the next, and so on until the last output goes back to tank. It works because all of the volumes are the same. It's a bugger to bleed but once it's full the results are great, and you get the added benefit of using the rod glands as linear bearings.
At the risk of starting another mind-numbing physics discussion :twisted: Here is some food for thought:
You could connect four equal volume single acting cylinders in parallel and reduce the hydraulic pressure needed to lift the load by 4X. But it won't do what you want. There is more to the physics of your double rod cylinder rigging than just having cylinders with equal displacements and I had to think about it for awhile to reason it out.
TOH
This post was edited by TheOldHokie at 12:10:14 01/13/14 2 times.
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