Without a Fire Hose

[Sur]

Hello!, I would like to know if somebody knows another way to build an "ski builder" without a fire hose. I live in Argentina and I can`t find a hose of 9", the bigger I found is 5" when is without air. May be, I can use 2 fire hoses, but I would need to put something between the fire hoses and the skis to be sure that the pressure would be equal.

Thanks!!!

Alejandro

[burny]

use a vacuum press ... it pressures with about 8 tons if youre pump manages to suck down to 200 milibars, thats much more than any press that usees the hose/hydraulic system will ever be able to do.

[BigG]

Burny,

I think you are not completely right about that.
The surface pressure from a vacuum press gets in optimal conditions close to 1 bar.
With a blatter or hydraulic press you are able to get +5 bar of pressure.

BigG

[Buuk]

With a normal pneumatic press you'll be able to reach a total force in the bladder (created by the pressure of course and using a 6" hose) of about 700000 N, so about 70000 kg or about 12 grown up elaphants . I am still busy on writing an article about calculating a pneumatic press and some words about FEA..... but very busy at the moment.
Autoclaving would be great as well, but hard to build.

Buuk