Grade im Internet gesehen, Fesch isses auf jeden fall :love:
http://www.washingtonpost.com/wp-dyn/content/photo/2007/09/10/PH2007091001512.jpg
A Cyclocross Calfee bike made of bamboo (Paul Schraub Photography)
What's new: For 20 years, Calfee Design has been building high-end racing bikes out of carbon fiber -- a strong but lightweight material used in everything from sports equipment to aircraft. But after seeing his dog try and fail to gnaw through a stalk of bamboo in 1996, Craig Calfee introduced aline of bike frames made out of bamboo and hemp as a publicity stunt.
Calfee describes bamboo as "tougher than carbon fiber in terms of impact resistance." It's less prone to fracturing than carbon fiber, and the bamboo bike is "about one pound heavier than carbon fiber," Calfee says. Bamboo also absorbs road vibrations well, allowing cyclists to ride longer without tiring. (According to Steve Chang, in charge of Calfee sales and production, one customer rode 500 miles in one day on a Calfee bamboo bike.) Since the stunt, Calfee has produced about 100 bamboo frames, each starting at $2,695 -- in the mid-level cost range for Calfee products.
A user's view: Larry Black, founder of eco-friendly College Park Bicycles, received a bamboo bike from Calfee a year ago. He says, "Eyes closed, it's hard to tell the difference between this and other bicycles. There's a little bit of novelty involved . . . [but] it's quite comfortable."
Expert take: Familiar with carbon fiber from his work at Goddard, Segal says some claims about bamboo's ability to surpass carbon fiber's strength are applicable, "but the manufacturer's stretching it." Strength depends, in part, on what grade of carbon fiber you're working with. If you're using "too little material or material in the wrong direction, you're going to have a different feel" and strength, Segal says.
Further, variations are inherent in bamboo because it is a living thing; some stalks may be weaker than others because they grew in poorer soil or had access to less water. And carbon fiber absorbs vibrations, too -- one reason it is popular.