A simple water pumpgreenspun.com : LUSENET : Junkyard Wars : One Thread
No motors for this one, all human power.
Archimedes screw vs a centrifugal vs a piston style pump or anything else the teams can come up with.
First team to pump a certain amount of water wins.
-- John Dillon (email@example.com), January 13, 2001
the only problem with an archimedes screw is that its only a low level lift, no pressure pump..it could almost be considered a water elevator!
-- tim (firstname.lastname@example.org), January 13, 2001.
How about a water ram. A device that uses the energy of falling water to pump water.
-- Vaughn Ellis (email@example.com), February 26, 2001.