The key here is the deterioration in design of quick releases. To my knowledge--not "opinion," this time I'm gonna be arrogant--quick release skewers of 2002 are a grossly inferior item compared to qr's of 1972 or thereabouts. Cams are exposed to dirt, and levers, cams, and adjusting nuts are made out of softer metal so that they can and do distort when tightened as firmly as some riders would need them tightened if they were riding with horizontal dropouts. It's not very scary to think about a big, strong sprinter riding with their rear wheel fastened with a 20 year old Campy Record Pista skewer--yes, there were curved levers pre-CPSC--but scary as hell to think of sprinting with Salsa, Rolf, or similar underbuilt garbage holding a wheel in. It's really, really stupid to make some things out of anything except high-quality steel. David "31 years of bike wrenching" Feldman Vancouver, WA
> Don Ferris wrote:
> >
> > Chuck Schmidt put it this way:
> > "Is there any difference between a big road sprint in the Giro or Tour
> > with Cipollo pounding down the road using a QR to hold his back wheel or
> > Marty pounding down the velodrome using a nut to hold his back wheel.
> >
> > Neither slip, so it must be that nobody wants to collide with a QR lever
> > on the track."
> > **********
> >
> > IMO, yes, there is a difference. Cipo is using vertical dropouts which
are
> > not subject to slipping like a horizontal.
>
>
> Ah, of course, vertical dropouts...
> Well, before Cipo, before vertical dropouts, slipping wheels in
> horizontal dropouts was not a problem. I'm talking here of pros and
> Campagnolo QRs and Campagnolo horizontal dropouts. If it was a problem
> there would have been a change.
>
> I'm not talking about current QRs made from aluminum, composite etc.
> without enough clamping force to keep from slipping in a horizontal
> dropout, which of course would be off topic.
>
> Also, making allowances for the axle compression from the QR closing
> force affecting the bearing clearances was common knowledge "back in the
day."
>
> Chuck Schmidt
> South Pasadena, Southern California
> _______________________________________________
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