Originally Posted by
John W T
Well, my experience shows that you are both wrong and the guy at the bike shop was right. Obviously the two ends of the QR are not identical, one has the release lever and the other does not. Clearly they were not seating properly when the QR was the wrong way round. I'm a bit fascinated with the quirk of human nature that makes us all instant experts on any subject we know a little bit about. We hate to have to learn that there's more to something than we already know in spite of the fact that the world is full of evidence that human knowledge on any subject is very limited.
Er, no. The ends of the QR are functionally identical in as much as the fact that the tension is equal regardless of which way round it is. Even if the QR was at an angle, it wouldn't be by enough to distort the axle any more in one direction than the other, because the diameter of the skewer is only very slightly smaller than the internal diameter of the axle, so it's not like the skewer can be compressing the axle at anything other than a very small angle.
Even if the dropout faces weren't parallel, the orientation of the QR wouldn't matter.
Also, FB has a considerable talent for working out what's wrong with a bike, not from having seen the issue before (although he usually has, he's seen most stuff that can go wrong with a bike in his career) but by using logic and reasoning, which you and the guy at your bike shop didn't do in this case.
