In five more years we can celebrate the 100th anniversary of the invention of the quick release.
https://en.wikipedia.org/wiki/Quick_release_skewerWhen you consider how many people have raced with them, especially with the older style horizontal dropouts, if they were that much of a hazard we should have heard of multiple failures over the years.
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A quick side note here, if you pack up your bike and put it in a box to go on an airplane somewhere, remove the front wheel skewer. When I was in Iceland, I met two Italians that had just arrived, they both had bent skewers and it was on a Sunday, they could not find any replacement skewers.
I was packing up to go home, if it was one person I would have given him mine, but it was two people so then needed two front ones.
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But now that most new manufacturers are going to thru axle, quick releases will slowly disappear over the decades.
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I think those lawyer lugs are a waste of time, they just make it more difficult to remove and refit the wheel. After you release the cam, you then have to loosen the tension nut at the other end to get the wheel off. When you put the wheel back on you have to fiddle around getting the tension right again. In the event of the QR mechanism failing whilst you are riding, the wheel might not fall off, but it will still be loose and cause you to crash!. In over 25 years, I have never had a QR mechanism fail whilst riding, only when removing the wheel (once).
On my bikes that have them, I loosen the nut exactly four turns, then it is easier to install later, as four turns might not get me to the exact point I want but I am really close to it and only takes a few more seconds to fine tune it.