They had a cut-away view of the rim on a pezcycling review a while back, amazing how thin the sidewall gets. It would be interesting to see a cut-away of one of the cheapies if anyone here ever scraps one. They first link has good pictures of firecrest and old 303s, the second has some Zipp tech stuff halfway down.
I have wanted a set of 303s for cross ever since watching this:
Zipp 303 Impact Testing - YouTube
They had a cut-away view of the rim on a pezcycling review a while back, amazing how thin the sidewall gets. It would be interesting to see a cut-away of one of the cheapies if anyone here ever scraps one. They first link has good pictures of firecrest and old 303s, the second has some Zipp tech stuff halfway down.
http://pezcyclingnews.com/?pg=fullstory&id=9255
http://www.bikeradar.com/gear/category/components/wheel-sets/product/303-tubular-wheelset-10-37862/