Bamboo Or Carbon Fiber: Are Those The Choices?

Bicycles are made either from carbon fiber or bamboo.

At least, if I didn't know any better, that's what I would think after reading an article on The Huffington Post website.

It's one thing for a journalist to be ignorant about a subject before writing about it.  But Tom Levitt, the author of the article in question, seems to have committed a cardinal sin (Well, at least I've always thought it was a cardinal sin!) for a journalist:  not doing his research.

Also, he seems not to know what he is trying to tell his readers.  It would have been fine if he'd stuck to writing a feature piece about the London club whose workshop teaches people how to build frames from bamboo.  That part of the article is interesting enough, at least to me.  I wouldn't even have minded if he'd written about the environmental damage caused by the manufacture or disposal of carbon fiber, or of bicycles generally.  

A class in the Bamboo Bicycle Club's workshop.

But the premise of his article seems to be that teaching people how to make their own bamboo bicycles is a way to mitigate the environmental damage caused by disposing of bicycles.  That, itself, would have been all right if he hadn't conflated the making or recycling of carbon fiber bikes with the making or recycling of bikes generally. 

What's all the more perplexing is that the article includes this photo of share bikes dumped in Shanghai, China.  Again, exposing the environmental damage and sheer waste of such a practice would have been valid.  With my knowledge of bicycles, however, I would say that few, if any, of those bikes are carbon fiber.  Most, I would reckon, are mild to mid-grade steel.  

Why is that important?  Well, steel can be recycled many times without losing strength or other qualities that make it a good structural material.  That is one reason why it's the most-recycled metal.  Not far behind steel in that category is--you guessed it--aluminum.  If any of the bikes in that photo aren't made of steel, they're probably aluminum, which loses little when it's re-used.

On the other hand, carbon fiber is recycled by chopping it to bits and burning off the plastic resin that holds the fibers--which lose significant amounts of their strength in the process--together.  Of course the loss of strength is a concern to bike-makers, but it's even more of a problem in the aerospace industry, where use of carbon fiber has expanded even more than in it has in the bicycle industry.

Carbon fiber use is also expanding more rapidly in the automotive industry, which also might not want to use materials weakened by recycling.  And, for all of the carbon fiber bicycles, boats, gliders, tennis rackets and such available to consumers, the military is still, by far, the biggest user of carbon fiber composites.   Let's just say that the armed forces aren't noted for their concern about the environment, much less recycling.  Moreover, armed forces are willing and able to spend whatever is necessary to obtain the most advanced composites, so they wouldn't be interested in recycled materials.

So...If Tom Levitt had stuck to one topic--bike-building classes, bamboo bikes or the environmental hazards of carbon fiber--he might have written a lucid and enlightening article.  Instead, he has revealed his ignorance or laziness. 

Yes, Cycling Is Intoxicating...Especially If You Ride This Bike

I've been reading about bamboo bicycles for the past few years.  I have only seen two in person, neither with a rider aboard.  So, apart from what I've read in a few cycling magazine and blog reviews, I know nothing about their ride qualities.  And those reports vary widely.

It seems that there are basically two types of bamboo bikes:  the ones that have some sort of metal at their joints and the ones--like Calfee's--that are made by joining bamboo tubes with hemp.  

I must say that if I were rich, I'd buy a bamboo bike as an objet d'art or a conversation piece, but certainly not as my only bike.  From what I've read and heard, such a machine--an odd term, isn't it, to use in reference to something made of bamboo--would give a cushy but not very snappy ride.  That, of course, would rule it out for a "do it all" bike, let alone one for fast rides.  

A bamboo bike might not "ride on rails".  But neither would the latest creation from Portland (where else?)-based wooden bike specialist Renovo.  A wobbly ride on it, however, might not be the fault of the bike itself--or its materials.  Rather, the problem, if you will, is more likely to lie with the rider.

You see, the latest Renovo model is made from barrels in which Scotch--specifically, Glenmorangie--was aged.  The renowned distiller, who is marketing the bike, ships the wood to Renovo in Portland, where the frames are crafted and finished--with the distiller's name on the right chainstay.

And, of course, the wood is infused with the world-famous libation.  Dr. Bill Lumsden, director of Glenmorgie's distilling and whisky creation, says that the casks are used only twice to make The Original, "a whisky which balances hints of ripening peaches and citrus fruits with creamy vanilla notes, to delight malt connoisseurs and amateurs alike."

Now, I don't know whether you'd notice those hints of peach and citrus or notes of vanilla while you're riding.  I'm not even sure they have anything to do with the color and texture of the wood, let alone the bike's durability or ride quality.  Does the whisky dampen shock?

Whatever the case, Dr. Lumsden says that even though his creation is mixed with the wood, customers shouldn't combine it with riding the bikes made from the barrels in which it's aged.  The original should be consumed apres-velo. 

A New Weave?

Carbon fiber bikes first appeared about four decades ago.  For two decades, they were mainly curiosities or status symbols; they were ridden (if they were ridden) mainly for record attempts or by those who simply had to have the latest equipment.

When Trek and other companies started to make carbon fiber bikes priced within range of the best steel and aluminum bikes, parts and accessories with the "carbon weave" pattern became as fashionable as snakeskin or leopard often are among the haute couture crowd. I remember seeing handlebar tape, saddles and even tires with the "carbon basket", as some of us called it.

Well, it turns out that carbon fiber isn't the only material that's woven when used in bicycle frames.  Interestingly, this material has many of the same qualities that doomed the early carbon fiber frames but make them attractive (not just in visual ways) to many cyclists today:  It is strong but still flexible, which allows it to be shaped in a variety of ways.  But it is also brittle, and--like early carbon fiber materials--needs to be supported by other materials.

The material in question is bamboo.  Industrial designer Lance Rake (You've gotta love that name!) realized that to make bamboo stiff enough, he had to cut it into thin strips, weave it and  laminate it to another material.  This is more or less how early carbon fiber frames were made:  They fibers were wrapped around, and bonded to another material, usually aluminum. 

Now, you're never going to believe what Rake is laminating his bamboo fiber to.  Wait for it:  carbon fiber.  In another interesting parallel with early carbon fiber-frames, Rake's bamboo-laminate tubes are joined into carbon fiber lugs.  Most of the early carbon-fiber frames were bonded into aluminum lugs.  

The bike Rake is holding in his hands is fitted with mid-level components and weighs about 19 pounds--more or less what a similarly-equipped carbon fiber bike would weigh.

Will the new "must have" bike accessories have a bamboo-weave pattern?  Depending on the accessory, it might actually look good.