Re: Bolts vs. QR: which has more torque grip?

A shy person asked:

Anyone using a QR on a fixed gear/track bike/single speed with
horizontal ends? 

Yes, tens of thousands of people do this.

Any problems with such a setup as far as slippage?

Slippage problems occur with QRs, bolts or nuts if they are not properly tightened.

I believe I remember Sheldon's site claiming that QR's provide either
as-good or better clamping power as bolts.
Let's assume that the QR's are standard (not cam-type),

Huh? All standard QRs are cam type. The twist-on skewers are a joke for use with horizontal ends, no way those would work.

See: http://sheldonbrown.com/qr

steel, of good
quality (Shimano or Campy), and are properly tightened. Lets also
assume that the rider is powerful... how about Jan Ullrich?
Most of the 20th century would suggest that QR's should work fine....

It's not actually so important how "powerful" the rider is, more important is how _heavy_ the rider is.

In addition, the smaller the chainring in front, the greater the tug on the chain. This is why SS mountain bikes have more trouble with this than road or track fixies do.

The nature of the frame end material also enters into it. Chrome plated or titanium frames tend to be slipperier than plain painted steel or aluminum.

Sheldon "Is That A Wrench In Your Pocket...?" Brown
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|                       -- A.H.R. Buller   |
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