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From DIY to Disruptive Tech: A bicycle made of cardboard

By | July 24, 2012, 9:44 PM PDT

If the weight of your bike frame is a chief concern, you can drop many thousands of dollars on a carbon fiber frame. Or you could talk to Izhar Gafni, an Isreali entrepreneur and rather obsessive tinkerer who has built a low-cost, good looking, functional and light road bike from cardboard.

We’ll let the well-produced video below tell the tale of the bike’s origin and development. But first, consider the potential here to scale up production of such steeds. Gafni figures the bike could be produced for about $12 in materials. That means the bike would retail for well under $100 — likely much closer to $50. Sure, you can walk into a Walmart today and pick up a Huffy cruiser for $90. But that weighs about 45 pounds, compared to the featherweight cardboard bike.

As Inc.com notes, this could be a boon for companies that offer bikes as amenities, such as resorts. I also think it would make for great campus bikes for large corporations or warehouses. For bike-sharing fleets, however, the cardboard might not be able to withstand the abuse that riders are sure to dish out.

Image: Giora Kariv

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Mary Catherine O'Connor

About Mary Catherine O'Connor

Mary Catherine O'Connor is a contributing editor for SmartPlanet.

Mary Catherine O'Connor

Mary Catherine O'Connor

Contributing Editor

Mary Catherine O'Connor has written for Fast Company, Wired, Outside, Entrepreneur, Earth2Tech, Earth Island Journal and The Bold Italic. She is based in San Francisco.

Follow her on Twitter.

Mary Catherine O'Connor

Mary Catherine O'Connor

Mary Catherine has written white papers and marketing material for technology companies and will not write about companies with which is actively engaged. She will disclose any instances in which her work mentions companies for which she has worked. Mary Catherine does not hold any investments in the companies that she covers.

She writes for SmartPlanet and is not an employee of CBS.

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+2 Votes
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Wow
That's awesome! Definitely won't stand up to bike-sharing programs abuse, but it's perfect for commuting. It's light, cheap, and durable AND it looks damn good. All the things that make me go "Meeee Likey!" Great job Mr. Gafni!

Juan Miguel Ruiz
GreenJoyment.com
Posted by Green Joy
25th Jul
0 Votes
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Good idea, bad material
As long as fungus digests cellulose, paper is going to be of limited use as a durable construction material. Forty-five years ago there were temporary buildings out of cardboard - I even worked in a card board laboratory in Panama that lasted about 2 years, until the damp and fungus penetrated the poly-ester resin coatings and got to the cellulose fiber. Perhaps, there are ways to making cellulose fiber indigestible that would allow more durability and a truly renewable construction material.
Posted by dduggerbiocepts
25th Jul
0 Votes
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Impressive
I'm impressed with both his skill as an engineer as well as his skill in making a remarkably professional video production.
Posted by dcr100@...
25th Jul
0 Votes
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amazing cardboard
This is an amazing construction, and congratulations to Giora. I suppose the next step is a cardboard car! I think it had better be electric. The chap who worked in Panama is being a bit pessimistic. Luckily a lot of the world doesn't have those climatic conditions to worry about. Actually, cardboard buildings will be quite good in the drier parts of Africa. The material is very strong and light to transport. It could be made into square logs and keyed in the corners to make log cabins with insulated walls. The roof could be made of single sheets and all parts could be prepainted, if conditions are wet. I think I'm going to start building one!
Posted by kitemanmusic
25th Jul
0 Votes
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I love it!
Awesome
Posted by Altotus
25th Jul
0 Votes
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And bicycles are only the half of it.
You can make nearly anything out of cardboard, by designing a layered construction that alternates the "lay" of the cardboard to meet stresses, and then gluing it together and stiffening it with biodegradable resins.

A vacuum chamber can be used to get the resins deep into the fibers in a reasonable amount of time, and then the product can dry in the air. If the resin is deep in the fibers, it need not be applied so thickly that it will stop the air channels provided by the corrugations, so the product will dry and cure in a reasonable time-frame, and could then be finished with a surface layer of similarly resined fiber or cloth, or simply left as is, or grind-shaped.

If a shellack is used, the vapor when drying can be a simple alcohol.

Furniture. CARS (with EXCELLENT "crush" characteristics). Probably airplanes as well. Monitor-movers, using tougher materials for the actual bearings, gas springs, and clamps. Perhaps even major parts of houses or other structures.

The only flaw so far: flame retardation. Shellack burns freely as is, and flame retardants are NOT friendly chemicals. We need something that works LIKE boron, but is health- and enviro-friendly.

No need to use metal for everything, when you only need it for the real load-bearing parts. No need to use oil-based plastics for everything, nor even fiberglass.
Posted by Lightning Joe
Updated - 28th Jul
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