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New cardboard bike

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New cardboard bike

Unread postby seahorse3 » Mon 15 Oct 2012, 10:14:27

According to this article, a cardboard bike costing $20 is getting ready for mass production. No metal parts. According to inventor, workable and passes all kinds of stress tests, including water proof and fireproof. If true, this could be a game changer for many.

http://news.yahoo.com/cardboard-bicycle-change-world-says-israeli-inventor-090732689.html
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Re: New cardboard bike

Unread postby Tanada » Mon 15 Oct 2012, 10:36:34

This reminds me of the news just a few years ago about the guy who designed wheelchairs for poor people that used common plastic chair and bicycle parts with a couple unique couplings and brackets. The guy is a hero in poor countries for restoring mobility to less fortunate disabled people. If they really can produce these cardboard bikes for 9 bucks and sell them for 20 they will be hero's to those who can't afford all the fancy bells and whistles.
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Re: New cardboard bike

Unread postby Beery1 » Mon 15 Oct 2012, 11:57:11

I'll believe the $20 price tag when I see it. But even at $20, it's going to be a stretch for such bicycles to sell in countries where bike sharing is common and healthy second-hand bicycle markets exist. I can (and have) bought perfectly good bicycles on eBay for $50 here in the US. I'll bet second-hand markets in Third World countries are selling metal bikes for a fifth that amount.
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Re: New cardboard bike

Unread postby davep » Mon 15 Oct 2012, 12:06:33

Beery1 wrote:I'll believe the $20 price tag when I see it. But even at $20, it's going to be a stretch for such bicycles to sell in countries where bike sharing is common and healthy second-hand bicycle markets exist. I can (and have) bought perfectly good bicycles on eBay for $50 here in the US. I'll bet second-hand markets in Third World countries are selling metal bikes for a fifth that amount.


From what I've seen second hand goods such as cars and bikes keep their value more in countries with a lower GDP.
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Re: New cardboard bike

Unread postby seahorse3 » Mon 15 Oct 2012, 13:09:09

What I like is the aspect of being able to make a bike with no metal. I don't know all the "energy" specifics of it, but seems to be less energy intensive, greener, and cheaper for everyone. Anyway, nice innovation. I hope it is a success.
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Re: New cardboard bike

Unread postby GASMON » Mon 15 Oct 2012, 13:13:45

Will go nicely with my Ford

If you want to buy a wreck buy a Ford
If you want to buy a wreck buy a Ford
It's a biscuit tin with an engine in
If you want to buy a wreck buy a Ford

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Re: New cardboard bike

Unread postby Plantagenet » Mon 15 Oct 2012, 13:19:42

Image

That is so cool.

Thanks Seahorse.
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Re: New cardboard bike

Unread postby SeaGypsy » Mon 15 Oct 2012, 16:30:02

The 'secret organic solution' holding it all together has to be epoxy resin, perhaps with some equivalent of fibre glass around the cardboard skeleton. Very clever, but still hooked up to the oil industry. Epoxy resins are defined as 'organic' because they break down to organic molecules, unlike polyester resins. There are more sustainable sources of epoxy, such as cashew nut tree resin, but these are not yet economically viable/ certainly would cost much more than the oil based product available everywhere.
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Re: New cardboard bike

Unread postby Plantagenet » Mon 15 Oct 2012, 16:38:19

What in heck is the "chain" made out of? Cardboard? Wouldn't it abrade and wear out?

What are the pedals made from?

How about the handlebars?

I can see how an epoxy resin could set up in cardboard and be strong enough to form the bike frame, but the flexible chain and the very strong materials needed for pedals must be made of something different then cardboard? :)
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Re: New cardboard bike

Unread postby SeaGypsy » Mon 15 Oct 2012, 18:38:20

There are some more pictures on the site linked. One looks like it shows a rubber drive with a tensioner wheel, running on a cogless metal sprocket, which does appear to be the only visible metal on the bike. I would happily bet the bearings are also steel! Cardboard/ epoxy bearings- nope. No bearings- nope.
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Re: New cardboard bike

Unread postby pstarr » Mon 15 Oct 2012, 18:47:55

Look ma! No epoxy.

Image

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Re: New cardboard bike

Unread postby careinke » Mon 15 Oct 2012, 19:11:29

The "Chain" is a car timing belt.
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Re: New cardboard bike

Unread postby Revi » Mon 15 Oct 2012, 20:16:34

Now when you tell the kid not to leave the bike out in the rain or it won't work it's really true.
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Re: New cardboard bike

Unread postby SeaGypsy » Tue 16 Oct 2012, 06:18:34

pstarr wrote:Look ma! No epoxy.

Image

Vintage bamboo/rattan from the 1940's


Rattan dressed steel.
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Re: New cardboard bike

Unread postby SeaGypsy » Tue 16 Oct 2012, 06:22:51

Revi wrote:Now when you tell the kid not to leave the bike out in the rain or it won't work it's really true.


Supposedly it's waterproof, which is partly why I assume it's epoxy, which actually collects about 3% a month of it's weight in water/ roughly. He said he left in in water for several months to test it. Would have come out a bit heavier, depending on the paint used for finishing, but would take many years to become sodden.

The drive wouldn't be too great in the wet I imagine...
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Re: New cardboard bike

Unread postby Tanada » Tue 16 Oct 2012, 07:38:42

I don't know why but I have the impression the ride would be much stiffer than on a standard alloy frame bike. I have nothing to back that up, just an impression.
I should be able to change a diaper, plan an invasion, butcher a hog, design a building, write, balance accounts, build a wall, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, pitch manure, program a computer, cook, fight efficiently, die gallantly. Specialization is for insects.
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Re: New cardboard bike

Unread postby jedrider » Tue 16 Oct 2012, 09:48:40

Reminds me of disposable cameras. I hope it doesn't go that route. At least, it is cardboard, not plastic, although I wonder if it is plasticized cardboard at that.
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Re: New cardboard bike

Unread postby SeaGypsy » Tue 16 Oct 2012, 16:16:27

Epoxy is a form of plastic, as is lacquer paint.
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Re: New cardboard bike

Unread postby Beery1 » Tue 16 Oct 2012, 23:03:33

Instead of making up new-fangled ways to build bikes, why don't we just refurbish all the scrapped bikes and bikes sitting in people's garages from the last 50 years. I'll bet there are enough perfectly rideable bikes sitting around to give one to every person on the planet.
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Re: New cardboard bike

Unread postby SeaGypsy » Tue 16 Oct 2012, 23:18:13

I see piles of them chucked out for such breakdowns as a rusted chain or brake cable, or bent derailleur. The culture of waste is still rife. One of the positives of the downslope should be an end to such waste.
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