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A comment on Five Hundred and Seven Mechanical Movements (1908). Parent comment

Re:Five Hundred and Seven Mechanical Movements (1908) by skykooler on Wednesday May 22, 2019 @10:18AM (#19981440)
Gears are always bumping into each other, one tooth at a time. In practice, the friction of the teeth sliding on each other causes much more wear than the impacts.
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Re:Five Hundred and Seven Mechanical Movements (1908) by taejo on Friday May 24, 2019 @03:50AM (#19999380)
In a properly constructed (shaped) gear, the teeth should roll against each other rather than sliding (i.e. the velocities of the contact points are the same).
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