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**SMS** · July 17th 09, 06:08 PM posted to rec.bicycles.rides,rec.bicycles.misc

wrote:
I watched the descent of the Tourmalet, the camera focused on a lead
breakaway rider pedaling hard at a cadence of 60-70rpm, with the
announcer claiming he was traveling at 60-65mph. [what size sprockets
does that take?]

I think he was using the Paragon Machine Works 66 tooth chainwheel in
the front. It might have been the smaller 60 tooth chainwheel, I
couldn't tell from the video. You need to get one.