The full piston crank prototype, showing the gear system, cranks and piston sliders. The crankshaft will be under a lot of strain, lifting 7kg of pressure in each syringe. So the challenge has been to make this complicated component using as little metal as possible. This one is made from a found curtain pole hardwood wooden disks, and wooden pegs pushed in at multiple angles to reinforce the structure and allow it to be dismantled.
The crank pushes these three sliders; here you can see the hinges connected with wooden pins. These can be popped out to dismantle it.
The sliders push the syringes in and out, while the valves force the water through in one direction along the pipe, making a powerful
pump that hopefully will lift the water over 2 meters.