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I think the road chainset was the most economic way of getting a modern chainset on a track bike. Fitted with one of these you are looking at about £100 for the lot, compared to the £170 for omnoms.
Alfine chainset is also a good bet because it's stupendously cheap and you get a chainring and bashguard thrown in too. Technologically it's pretty much the same as the omnoms, i.e. forged arms, hollow axle, external BB.
If you want light rims check out Stan's, maybe Alphas or Grail.
Howard-
All of that ^ really. Stans are probably the best lightweight option.
My suggestion was for 5700 as they're stiff, black, external BB, not too heavy and not too expensive. So basically the best around 'perfomance' choice. Equally the Alfines would probably do everything you need.
Pretty sure the last gen Sram red plus something like one of those Thorn rings will be your lightest non-botique crank option though. But as I said if you want to go down the ww path you need to start listing weights next to things.
I don't really understand why you'd choose Omnoms based on your brief. They seem like an expensive compromise.
hugo7
I can't figure out how this is much lighter? For example Shimano 5700 chainset is 720g and bottom bracket 90g, (810g) minus whatever the small chainring weighs (can't find a weight listed anywhere). Omniums are 825g including BB...
It is quite possible that I am being an idiot (as I said before, I am the world's most unpractical person) but this doesn't seem to be much of a weight saving.
XM319 disc rim seems to be for 26inch wheels only?? Also heavier than the Archetypes anyway...
@exoder, cheers for the heads up - looks good but that's too big for me... I'm a tiny manlet and will be getting a 52cm frame