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#1
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Carbon Nanotube Bike Frame
Hi,
http://cozybeehive.blogspot.com/2008...echnology.html Experts in the materials science field are welcome to discuss the advantages of this material. Btw, if you aren't interested in opening the link, thats fine but keep unnecessary comments to yourself. Ron http://cozybeehive.blogspot.com |
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#2
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Carbon Nanotube Bike Frame
On Mar 31, 10:29 pm, bicycle_disciple
wrote: http://cozybeehive.blogspot.com/2008...e-bicycle-tech... Experts in the materials science field are welcome to discuss the advantages of this material. Btw, if you aren't interested in opening the link, thats fine but keep unnecessary comments to yourself. Sure...if you keep unnecessary comments about unnecessary comments to yourself. ~ R |
#3
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Carbon Nanotube Bike Frame
bicycle_disciple wrote:
http://cozybeehive.blogspot.com/2008...e-bicycle-tech... Experts in the materials science field are welcome to discuss the advantages of this material. Btw, if you aren't interested in opening the link, thats fine but keep unnecessary comments to yourself. That "space elevator" guy also talks about carbon nanotubes as if they already existed in industrially useful quantities. When such materials *are* available in industrially useful quantities, I'm willing to wager that the space elevator dude will get his long before any bike manufacturers get theirs. Furthermore, I'm willing to wager that the amount of buckytube, if any, in that bike frame is comparable to the pinky-nail sized toots of Peruvian marching powder currently being snuffled up by the bike's marketing team. Chalo |
#4
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Carbon Nanotube Bike Frame
i'm a soon-to-be Ga. Tech graduate with some experience with aerospace
grade composites, which some bikes (like the BMCs) are certainly comparable to, while others are not. also, i'd like to note that Easton and BMC have been pushing this technology for at least three years. carbon nanotubes are exciting because lab-grade materials have produced unprecedented yield strengths. however, actual production of the material for manufacturing purposes has proven difficult (anyone remember the space elevator?). thus, carbon fibers are still utilized as load-carrying members in the composite. my understanding of the easton material is that the nanotubes disrupt crack propagation in the matrix, improving the material's toughness. since none of the nanotubes are aligned in one particular direction and all are significantly shorter than the reinforcing fibers, it is unlikely that they improve the strength of the material significantly. also, it is typical (in almost all materials) that improved toughness means lower strength and stiffness values. so, it is possible that the easton material is the same strength or even weaker than other carbon fiber composites. the BMC frames *are* a little heavier than some other high-end full carbon frames... as far as fatigue goes, composites in general are typically superior metals. fatigue of the carbon material is not an issue; it is one of its strengths. however, many carbon frames have joints and other bonds (e.g. bottom bracket shells). these are the areas of concern for fatigue. however, the bonds at these key locations are a function of the manufacturing process. in other words, fatigue of carbon bicycles is a result of how they're put together, not the material itself. the material concerns with carbon fiber (esp. as compared to metals) are impact strength -- since the tubes are weak through the thickness -- and other failure modes, like delamination, absorption of moisture, UV degredation, etc. i don't know how companies address these issues, but the carbon bikes seem to have become much more reliable in these respects. BMC appears to have addressed the crash-worthiness of their bikes in improving toughness of the composite used, although i doubt most buyers are going to see it this way. i think it's mostly a marketing ploy to get people to buy their high-end carbon bike over another company's. frank bicycle_disciple wrote: Hi, http://cozybeehive.blogspot.com/2008...echnology.html Experts in the materials science field are welcome to discuss the advantages of this material. Btw, if you aren't interested in opening the link, thats fine but keep unnecessary comments to yourself. Ron http://cozybeehive.blogspot.com |
#5
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NANO FLOP
I've shoveld a lotta **** in my time but this here BS takes the cake
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#6
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NANO FLOP
On Apr 1, 1:22 am, datakoll wrote:
I've shoveld a lotta **** in my time but this here BS takes the cake Just wait 'til a bike company with a highly paid Professional Bull**** Team, such as Trek, gets a chance with this stuff. If Trek can make so much hay out of a cost-cutting BB shell design (the "new" Madone), just think of what they can do with Nanotubes! |
#7
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EXTRA TERRESTRIALS LAND AT KENNEDY SPACE CENTER
ET's say they gotta settle with Brandt |
#8
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EXTRA TERRESTRIALS LAND AT KENNEDY SPACE CENTER
"as far as fatigue goes, composites in general are typically superior metals" yaaaaawwwnn who said that? Sea Ray? Saturn ?? Corvette Owners Club !! as far as carbon goes, we need consider carbon's carbon-energy footprint. if you see a carbon rider-go over and **** onem. |
#9
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EXTRA TERRESTRIALS LAND AT KENNEDY SPACE CENTER
datakoll aka gene daniels wrote:
"as far as fatigue goes, composites in general are typically superior metals" yaaaaawwwnn who said that? Sea Ray? Saturn ?? Corvette Owners Club !! as far as carbon goes, we need consider carbon's carbon-energy footprint. if you see a carbon rider-go over and **** onem. All the cyclists I have seen have been carbon based lifeforms eating carbon based foods. -- Tom Sherman - Holstein-Friesland Bovinia The weather is here, wish you were beautiful |
#10
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EXTRA TERRESTRIALS LAND AT KENNEDY SPACE CENTER
datakoll aka gene daniels wrote:
ET's say they gotta settle with Brandt ET phone Brandt. -- Tom Sherman - Holstein-Friesland Bovinia The weather is here, wish you were beautiful |
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