4 ms·

Some of them have now been built in real life! https://www.behance.net/gallery/77793195/Velocipedia-IRL https://www.behance.net/gallery/77793195/Velocipedia-IR

• glaberficken 6y ago
  Wow thanks. This one should be "rideable" at least theoretically: https://mir-s3-cdn-cf.behance.net/project_modules/max_1200/ca9dfd77793195.5c920cb34d072.jpg https://mir-s3-cdn-cf.behance.net/project_modules/max_1200/c...
  • mactrey 6y ago
    I don't know much about bikes but why wouldn't the blue one with the solid wheels be rideable?
    • kevmo314 6y ago
      The rear wheel would likely shear upwards along the seat tube when the rider sits on it. I suppose with enough strength it could work, would be quite a heavy bicycle.
    • glaberficken 6y ago
      I guess you mean this one? https://mir-s3-cdn-cf.behance.net/project_modules/max_1200/fe4d2e77793195.5c920cb34c961.jpg https://mir-s3-cdn-cf.behance.net/project_modules/max_1200/f... If so, it is not "rideable" because you cannot steer it.
      • saagarjha 6y ago
        I’m curious you could still ride it by leaning…
        • glaberficken 6y ago
          On a normal bicycle when you lean off the vertical axis, a compensation is made by turning the front wheel towards the "inside" of the lean thus bringing the bicycle again closer to the vertical. i.e. the bicycle (with the help of your steering input) turns the front wheel to catch your fall. If you lean without steering you will simply fall over to the side immediately! Don't try to do this by the way =) This is the same principle of balancing an upright broom vertically, handle first, on the palm of your hand. When the broom falls out of balance, you simply move your hand in the same direction to recover the center of balance. A bicycle is balanced by exactly the same principle. Edit: Relevant Video: https://www.youtube.com/watch?v=2Y4mbT3ozcA https://www.youtube.com/watch?v=2Y4mbT3ozcA
  • scrumbledober 6y ago
    the blue one looks "rideable" for definitions of rideable that do not include steering.
    • glaberficken 6y ago
      a bike without steering is "unrideable" by definiton, actually quite an interesting rabbit hole: =) https://en.wikipedia.org/wiki/Two-mass-skate_bicycle https://en.wikipedia.org/wiki/Two-mass-skate_bicycle
      • balfirevic 6y ago
        > a bike without steering is "unrideable" by definiton, No, not by definition.
        • glaberficken 6y ago
          Care to explain what you mean? Riding a bicycle presupposes movement and control. To accomplish the act of riding a bicycle you must be able to steer otherwise you will just fall over to the side and you will not be riding it anymore =)
          • balfirevic 6y ago
            Your link was about what's needed for bicycle to be self-stable. That steering is required to avoid falling over (as opposed to, say, keeping balance by shifting your weight slightly to one side or the other as needed) is an experimental result and not baked into definition of "not having a steering wheel", even if it is a physical consequence of not having it.
            • glaberficken 6y ago
              I still don't understand your point sorry =)