​​​​​​​Under those revisions, bicycles equipped with cam-lock quick release mechanisms did not need auxiliary front wheel retention devices. Therefore, they were not so equipped. QRs had been used only on expensive bicycles; but they soon became offered on cheaper bicycles bought by the general public, who did not know how to use them. There were cases of front wheel disconnection. John Howard, a racer whose leg power exceeded his brain power, testified as an expert that QRs came loose, and therefore bicycles with QRs ought to have auxiliary retention devices, just as did bicycles with nutted axles.

Howard was wrong. QRs are made so that the use of the cam to grip the fork ends goes through a point of maximum tightness before completing the cam movement. Therefore, a QR that is hypothetically loosening itself has to get tighter still before becoming able to loosen itself. Therefore, it cannot do that of itself; it can be loosened only by use of the cam lever. I testified once that the instructions for using the QR, required by the CPSC for all the equipment on each particular bicycle, were defective, so that the user could think he had operated it properly but had not done so. I testified in another case about how a QR, once properly installed, could not come loose of itself.