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How practical is this guys idea? He's pushing the bicycle envelope.

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  • How practical is this guys idea? He's pushing the bicycle envelope.

    http://www.engadget.com/2012/10/16/cardboard-bicycle/

    Maybe we'll be machining cardboard in the future.
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    Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

    It is true, there is nothing free about freedom, don't be so quick to give it away.

  • #2
    One of the interests I have is building Cardmodels. Including some of my own design. Even if I don't finish the project I try to see how far I can push the material. For one project I built a cell structure 5 inches square and one inch thick. Top, bottom and cell plates were .040 chip board (that is what the stuff on the back of pards of writing paper or cereal boxes is called) faced with 65lb card stock both sides. The cells were on one inch centers. When I put it in a spring compression it maxed the gage out at 500 lbs. In order to bring it to the failure point I had to put it in a ratchet type arbor press. Plus remeber that Rutan's Voyager (?) that flew around the world is couragated card board at its core. I just don't believe the 20 bucks part
    Forty plus years and I still have ten toes, ten fingers and both eyes. I must be doing something right.

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    • #3
      Probably a good temporary bike.
      It's only ink and paper

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      • #4
        " In fact, this bicycle doesn't use any metal parts at all "

        Hate to be so picky but that timing belt sure looks like it is going around an aluminum gear to me. Without metal parts I'd love to see how the shifting mechanism works unless this is supposed to be a one speed bike, in which case good luck getting many people to buy it.

        Steve

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        • #5
          Plus most likely steel cable in the brakes. And what about bearings. Sure they could be sleeve type but the friction is going to go up
          Forty plus years and I still have ten toes, ten fingers and both eyes. I must be doing something right.

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          • #6
            Spin Doctor,

            I'm interested in paper honeycomb structures. How are they made, and how can they be waterproofed? If you can point me to some information, I'd appreciate it.

            JA

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            • #7
              I don't see how that can be made and sold at a profit for $20. I don't even think it can be made for $20.

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              • #8
                good luck getting many people to buy it
                This is a third world bike. There may well be more single speed bikes in use in the world than the fancy dérailleur types we typically use in developed countries. I seem to remember Jules Verne had an airship made of paper in one of his writings, over a hundred years ago... More power to him.

                In any case "The market will decide."
                "A machinist's (WHAP!) best friend (WHAP! WHAP!) is his hammer. (WHAP!)" - Fred Tanner, foreman, Lunenburg Foundry and Engineering machine shop, circa 1979

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                • #9
                  Give me just one city block and I could turn that thing into pulp...

                  hope his wifey reminds him to bring it in in the rain...

                  The real question is "WHY"

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                  • #10
                    Car timing belt? Where can I get one of those for less than $20?
                    I seldom do anything within the scope of logical reason and calculated cost/benefit, etc- I'm following my passion-

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                    • #11
                      Originally posted by oxford View Post
                      I don't see how that can be made and sold at a profit for $20. I don't even think it can be made for $20.
                      They'd be relying on the government tax credits etc for 'going green'

                      Start company, get the grants, build a ton of bikes, declare bankruptcy and sell them for $20 at the auction.

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                      • #12
                        Originally posted by SteveF View Post
                        unless this is supposed to be a one speed bike, in which case good luck getting many people to buy it.
                        Strangely enough....single speed bikes are becoming trendy again, very simple and light, no freewheel, so you can brake with your legs, they have competitons for them too.

                        I like this guys work. I have used so much cardboard and duct tape over the years I have a soft spot for this material.
                        Last edited by Peter S; 10-17-2012, 02:12 AM.

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                        • #13
                          What a waste of cardboard.

                          I bet it would heat my shop for at least 20 minutes!
                          Andy

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                          • #14
                            His maintenance-free bike uses a "secret" mix of organic materials to make it waterproof and fireproof, and is then lacquered to give it a friendlier appearance.
                            Some type of resin I'm guessing, so he's basically making a fibre glass type of a thing. Cardboard reinforced "organic" plastic.

                            I'm curious of the ratio of cardboard to "secret" mix.

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                            • #15
                              Originally posted by Peter S View Post
                              Strangely enough....single speed bikes are becoming trendy again, very simple and light, no freewheel, so you can brake with your legs, they have competitons for them too.

                              I like this guys work. I have used so much cardboard and duct tape over the years I have a soft spot for this material.
                              I agree. I like to see how other peoples minds work. Who ever thought we be seeing aircraft wings out of carbon fibre.....and what the hell is carbon fibre anyway? !! If he needs to use non-cardboard bearings and drive belts he has still demonstrated that cardboard is much stronger then we normally think of it as being.
                              - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                              Thank you to our families of soldiers, many of whom have given so much more then the rest of us for the Freedom we enjoy.

                              It is true, there is nothing free about freedom, don't be so quick to give it away.

                              Comment

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