Originally posted by redrichie
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Hydraulics are the same except you look at the pressures in the line or a the motor or pump. Same with pneumatics
At real high speeds you do have to start to factor in friction with gearing, Likewise you have to factor in leakage with hydraulics, ect... but those losses usually account for very little. There are a few specific losses orientated for the type of reduction used. Gears may have torsion loss from flexing metal. Hydraulics have tension loss from flexing lines and/or seals. Reduction in line size also comes with a very small standard loss.
Pneumatics have few more losses. Line size and distance are real important for maintaining pressures.
Its all pretty standard stuff not real big challenge mathematically.
Water would probably be a better bet then a heavy weight. Just mechanically speaking you can probably get parts to move and store water cheaper then you can part to carry heavy weights.
People are already using water towers as batteries with a pretty efficient turn around. But the again it does not have the shock an awe of 100 ton floating in the air slowly creeping down until the next time you leave the driveway. LOL
Cheers
Matt
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