Originally Posted by
LelandJT
I'm starting with a fairly standard build because all those parts are sitting around here, some used. To drop more weight from that I have to start requesting or buying different parts. Also, I'd like to get it rideable as soon as possible so the GF and I can hit the road. We're getting a little sidetracked here though cuz the purpose of this thread was to see what really light examples already exist and it doesn't bother me at all if they're Calfees, Co-Motions, or Paketas. I'll make a different thread about the bike when it's done.
Ok, so you have your frame, fork (assumed), wheels (assume no disc setup), your next big item to find is a lightest of weight crankset... meaning either daVinci or Lightning. The former is some $500-600 cheaper and has a narrower Q-factor, the latter the lightest possible, potentially BB30 if you wish, but also most expensive and widest Q. FSA is 100-200gm heavier than the others, but cost is equiv to daVinci and Q of the FSA is between the other two.
Other than that, you're just looking at stems, bars, seatposts and saddles. For the captain bars, a 200gm Specialized S-Works SL is ~200gm and $250msrp. Stoker is easy to find a carbon bullhorn TT basebars at 200gm, but you can actually go lighter by hacking off the drops of regular bars (eg, another set of S-Works would obviously be well under 200gm with the drops cut off). I like the light weight and fit of carbon Specialized saddles, but seats are always a personal choice.
Lastly, once you have all your components, go replace every non-Ti bolt you have (eBay), and don't overlook the weight of bar wrap either, and trim whatever extra seatpost length may be present.
No joke, if you're shooting for 20lbs, you're build will need helium in the tubes.