Pedal powered water pump. 2007.

Strathclyde Mechanical Engineering student project, 2007.
To build a human-powered water pump that could be used to irrigate farm land.
They used two cylinders, they should have gone for three which would have made it much easier to work.

http://johnthetechnician.co.uk/youtube-videos/pedal-power-irrigation/

Видео Pedal powered water pump. 2007. канала John TheTechy