Keywords: Leonardo Crank-Drive Boat.png en Paddle-Wheel Boat First feet driven vehicle by crankset c 1490 Two compound cranks gears and a flywheel Codex Atlanticus Folio 374 Presented in Feldhaus Franz Maria Leonardo der Techniker und Erfinder 1922 p 124 PD-old-100 Creator Leonardo da Vinci 1490 Credit line http //en wikipedia org/wiki/User Portolanero Wikimedia Commons CC-BY-3 0 CC-BY-3 0 Manuscripts by Leonardo da Vinci Technical drawings by Leonardo da Vinci Inventions and constructions by Leonardo da Vinci Mechanical engineering by Leonardo da Vinci Codex Atlanticus |