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I've been reading up on hydraulic fluid power design to design a lifting system for a loader bucket I'm building for my 20Hp tractor. I know how to calculate the force/ speed of one cylinder extending; but I am a little lost as far as using two cylinders. If I have a total weight of 2000 lbs to be lifted and have a 2" cylinder with an extension of 20" on one arm and another 2" cylinder with an extension of 20" on the other arm, both cylinders are actuated by a control valve with both cylinders sharing the same hose with a "Tee" to direct fluid to both cylinders. I know the one with the least resistance will extend first.

When calculating; do I use the area of one of the 2" cylinders and an extension of 40"? Or do I use the total area of both cylinders and the extension of 40"? I'm a little confused because I've seen sales brochures with stated PSI, cylinder size, and extend times and I can not get them to match my calculations.

Thanks,

Grandnat_6

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# Hydraulic cylinder speed/force

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