Originally Posted by
FBinNY
I was thinking of older stuff, like Pre Index Campagnolo, Huret Jubilee and the like, all Simplex derailleurs and so on.
Situations like setting chain length is why I like to say that there are no rules, only considerations.
Folks who learn a rule and blindly follow it get into trouble when they find the exception but don't recognize it.
There are always going to be exceptions...