@Lynchman - If you ran a fixed/fixed hub you could at least run two different GIs and swap the wheel round at the top of the mountains; thus having a more appropriate gear for descending?
What, like these guys did?
http://vimeo.com/54272055
http://8bar-bikes.com/pages/fixed-alpcross
@AngelD started
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What, like these guys did?
http://vimeo.com/54272055
http://8bar-bikes.com/pages/fixed-alpcross