As another example, here's a 19th-century bicycle design without a chain stay. Not necessarily a good design, but it was actually built and ridden: https://comm

As another example, here's a 19th-century bicycle design without a chain stay. Not necessarily a good design, but it was actually built and ridden: https://commons.wikimedia.org/wiki/File:BicyclePlymouth.jpg https://commons.wikimedia.org/wiki/File:BicyclePlymouth.jpg