If you’re trying to understand literal gears then a simple model that says “the amount by which this one turns equals the amount by which that one turns, measured in teeth” (or something like that) is often sufficient even though it may break down badly if you try to operate your machine at a temperature of 3000 kelvin or to run it at a million RPM.
[EDITED to add:] I think you may have misparsed the end of romeostevensit’s comment. Try it like this: “Gears themselves are a black box. But, since we are rarely designing for environments at the extremes of steel’s properties, we don’t have to think about it.”
If you’re trying to understand literal gears then a simple model that says “the amount by which this one turns equals the amount by which that one turns, measured in teeth” (or something like that) is often sufficient even though it may break down badly if you try to operate your machine at a temperature of 3000 kelvin or to run it at a million RPM.
[EDITED to add:] I think you may have misparsed the end of romeostevensit’s comment. Try it like this: “Gears themselves are a black box. But, since we are rarely designing for environments at the extremes of steel’s properties, we don’t have to think about it.”
Thanks, pesky phone grammar.