I have no evidence here, only conjecture, but I suspect that the Campy track hubs get fractured not by brutal sprinting but by getting beat over the bumps, which subjects the wheel to loads that are not evenly distributed across all spokes.
A powerful sprinter will strain the wheel and hub, sure, but that's a very different kind of loading than a city pothole with the rider's full weight bearing down.
markp
-----Original Message----- From: classicrendezvous-admin@bikelist.org [mailto:classicrendezvous-admin@bikelist.org]On Behalf Of Huemax@aol.com Sent: Wednesday, June 13, 2001 8:43 PM To: david@bikecult.com; fixed-gear@lists.davin.ottawa.on.ca Cc: classicrendezvous@bikelist.org Subject: Re: [CR]Re: Campag track hub warranty issue
I do not understand Campagnolo nor this discussion. The track hub has less capacity than Road hubs????
I have seen some Olympic track racings and real Keirin competitions, many power riders of short distant are huge, 200 to 250 lb (?) with tremendous body (legs).
It was understood in young mind that they could not hold up Quick Release skewer, and has to use 1/8" chain ring with fixed gear. Why do not use 3/32" lighter chain? Also, why they tighten hub shaft with lugs? Moreover, there is very critical inspection of Keirin frame every year or less for metal fatigue!
I remember seeing a keirin racer was practicing with 48 to 14 T gear climbing up very steep hill while I cound not move there 42 to 21T. I was walking up, and he passed me. I felt his power, and thought he could break Shimano/Suntour parts! It was about 1970.
KEN TODA, I can not remember what kind of bike he had, but he had one or two spare tires, and the saddle so small and funny.