>>1019301Sometimes they use exotic carbon cranks (pic related Wiggins hour bike). But I don't think a good mass market carbon crank has ever existed for track use, at least not for very long. That's why you saw monsters like Chris Hoy using Dura Ace octa-link (which came out with 7700, in 1996!) up until a few years ago. The SRM track crank is no slouch though, check out the specs here. It's got a steel axle and is rated for 4000 watts.
http://www.srm.de/products/srm-powermeter/science-track/At Rio, I saw a lot of no name carbon units (and the SRM above) being used. I think Britain used the Sugino SG75 Grand Mighty on some bikes, that's a pretty old design. But those are great because of the open bearing (ball and cone) systems, which have very little resistance. They're also relatively stiff, and can survive crashes. Weight isn't a big deal.
