Including chains and everything?
I’m no engineer, but I would think certain parts would be extremely difficult (and as a result incredibly expensive) to fabricate from carbon fiber. The chain you mentioned, also the cassette, the front chainrings as well as lots of very small parts like the cables, wheel skewers, and bolts. Not to mention the bearings in the bottom bracket and the wheel hubs.
Nah, I think chainrings and cogs would be pretty easy (they wouldn’t last very long, but that’s something else entirely). Actually, I think I’ve seen something about carbon chainrings, but I have no idea where that was.
The big thing, as you mention, would be anything that’s under tension. The chain and the spokes are the things that come immediately to mind to me. I’d guess that cables could be done. It would be stupid, but it could be done.
-C
Actually, it would be things under compression where carbon would be problematic. Carbon is very strong is tension. Unbelievably strong. It’s compression where it is weak, hence the reason you have to be careful torquing bars, etc. Spokes are no problem. Lightweight wheels are made with carbon (and kevlar) spokes, but you could make all carbon spokes easily. The kevlar would make them better, but it’s not a big deal. Cables themselves would be hard, though, you could probably mold them with some sort of rubber. The thing to remember is that carbon is not actually carbon, it is carbon + epoxy (or some other matrix, but usually epoxy). So there is no real way to make a bike out of 100% carbon. Unless you cut it out of diamond or graphite, which would suck.
A bike made of diamond would be awesome, haha
.
Yes of course, compression, not tension. That makes much more sense. That’s what I was thinking when I mentioned chains. I’m not sure what I was talking about with spokes.
-C
Fibre-lyte makes full carbon chainrings…
Only things I havn’t seen that are carbon on a bike are:
shifter/brake mech
front derailleur
chain
tires
skewers
“front derailleur”
What about Record? Not completely carbon, but close.
“tires”
Now that MAY lead to a harsh ride… 
Including chains and everything?
you could easily
but then what did you gain?
cables is easy to make them out carbon
also full carbon drive chain
bolts are also made out of carbon
yes even tyre s
so if you want no problem
even the bearings
Just a bit of Wednesday afternoon silliness?
It’s all good.
Crumpton pretty much makes the lightest bikes that I know of. At NAHBS I saw his 7lb total Track bike. He had a four year old girl carrying it around the show. He makes a beautiful blue chipped carbon fiber road bike all decked out in Campy Record that’s well under 14lbs as well. But, it’s a special occasion bike. After speaking with him for a little bit, he told me that he’s getting out of that ultra-lightweight obsession in favor of durability. And, Craig Calfee’s carbon spider bike is pretty crazy too… Weight is one thing, but ride is important too. And, my 2003 Derosa has no carbon on the frame and forks, yet is lighter and handles better, - (IMO), - than their new cabon/aluminum/scandium models.