The following vertical column example clearly shows why a layered Travis system has greater lift than a Hydraulic cylinder. It simply boils down to surface area. The Travis has diameters of 36.2, 35.1, 33.9, 32.5 and 31 all at psi of 2.2. The hydraulic cylinder of 31.75 at 11 psi. Each system has the same water volume input, but Travis win's on surface area.

This is only part of the OU, but if you understand this part your on your way.
Edit: You may need to download and blow up to see it better.

Regards, Larry

@webby1,
The following 5 riser calculator may help. The spreadsheet data set is below the picture.

Regards, Larry

Edit: Can you imagine having to put 5 100 pound weights on top to hold down this little model.

Thank you Seamus,
For your input.
Please consider the information that has been replicated and offered, your comments are unrelated to the Z.E.D system.
We have several fantastic discoveries - all of which can be measured with simple physics.
Wayne

Thanks to webby1 bringing up the 5 Riser, found this gem. Note the Light Blue at the bottom, which is the Travis Lift efficency over Hydraulic Lift.

Does anyone else hear a large cracking sound in the background?
Sounds like something being broken.


Regards, Larry

Quote from: webby1 on July 03, 2012, 05:24:51 PM
Hate it when I do that

I appreciate the help in understanding but I am only trying to understand the "concept" and the "where" the forces are.

I know that in a real setup the numbers are not as simple as I am using, but simple numbers are easy to grasp and that is what I am trying to do, grasp the where and the what.

In the simple setup I gave, if the input tube to the pod chamber were also 10 ft tall then the 2 pressure values would be the same, 4.3 psi, so what I am asking is: Is it basically that the only force that is needed as an "extra" input is the force to take the input to the pod *from* the 4.3 psi up to the 6.45 psi, which is only 2.15 psi, meaning that I would only have to have a "pump" to "pump" the fluid down from the pod input tube that can make 2.15 psi.  All this giving me back the lifting force equal to 6.45 psi.

Hi,
I posted the Riser 5 calculator with the 1 Foot Pod and Riser value to show that the Max PSI is 2.60. So your PSI figures are misleading as they don't correlate to 1 Foot. But, you are bascially right in your understanding of the additional pump force given the correct height Pod and Riser.

Edit: Webby1 or anybody please review my 808 post. Let me know if you understand or point out improvements to help the understanding.

Regards, Larry