Current Projects chat and miscellany

About 60-70g for an integrated headset.

KMC X9-SL chain should be about 230g for a track bike, and for track use you could get away with an alloy sprocket at 1/3 the weight of steel if you find yourself close to your target weight. Some little things that make a difference are seat clamp, basic ones are heavy and light ones need not be expensive, and headset adjuster/fork bung is a place where you can cheaply shave off 30g. For a weight weenie fixed, I'd probably go for a bolt on sprocket just because there are some light front disc hubs which can be hacked, whereas the only vaguely light track rear hub is the AC and it's a bit limiting being 24h only

Cool, thanks for the info. Alloy cog and X9 SL chain. Added to the list. :-)

Just to be clear, it is not really for the track, otherwise I would just go with light carbon tubs and be laughing.
It is for 'training' and generally riding some miles on. I will probably give it a few laps, but the PX is nicely set up with the SRMs and a full compliment of nice bits to use on the track.