[BumblingBuilder]

Originally Posted by ollien

To that end, how do I know if it is tensioned or not?

You can usually tell if chain is tensioned correctly just by moving the strung chain up and down. It should never be too tight in that you can't move it at all. But it shouldn't be sagging on its own.

I, depending on the center distance and size of sprockets, allow for around a third to half an inch of flexibility in either direction (up and down). I usually allow less flexibility with smaller sprockets and a shorter center distance, and more flexibility for large sprockets with a longer center distance.

With that ideology, I haven't experienced any chain issues. However, if people have done more scientific testing that disagrees me, I am willing to change my ways.