Branko Horvat

Hi,
here are some ideas and realizations of a gravity-operated water pumps. Milkovic dual oscillator(pendulum) and its not a "perpetuum mobile". Just needs some energy input from time to time. If constructed good, you can just swing the pendulum in the morning and let it work all day.But it takes like a 2 metric ton pendulum,and its hard to start the oscillations by just pushing it with your hands.

https://www.youtube.com/watch?v=jNdF8mTfu4g
https://www.youtube.com/watch?v=Xt4dLsqX_I4
https://www.youtube.com/watch?v=8n7mvpLpP5A

here is the more about the dual oscillator
http://www.veljkomilkovic.com/indexEng.htm

I think the original post was about making easier the use of a manual water pump. The method , Archimedes screw or roman pump dose not matter.

Hi. Short answer "NO". But if you want to go that way see about Milkovic Two-Stage Oscillator , has allot of practical applications,even for a manual well pump.

Hi, I will not comment on the refractory use of the so called "DIY carbon foam" .But this is kinda carcinogenic.
A quote from wikipedia "Benzo[a]pyrene is a polycyclic aromatic hydrocarbon and the result of incomplete combustion at temperatures between 300 °C (572 °F) and 600 °C (1,112 °F). The ubiquitous compound can be found in coal tar, tobacco smoke and many foods, especially grilled meats." ....." Its diol epoxide metabolites (more commonly known as BPDE) react and bind to DNA, resulting in mutations and eventually cancer. It is listed as a Group 1 carcinogen by the IARC. In the 18th century a scrotal cancer of chimney sweepers, the chimney sweeps' carcinoma, was already connected to soot."