interesting thread - I have a 42t x 16t (71 inches) freewheel on my s/s. I'm going to switch to a 38t x 16t (66 inches).
I'm struggling a bit on the up hills, which are not really much to worry about in the south east corner of the Nations High Five. But my knees are good and I want to keep it that way.

- QUESTION: I'm struggling to find what kind of chain to use as I mix and mis-match chainrings and cogs. I got a bit of a click-y drive train and I suspect I have the wrong chain with the freewheel.
I think my SHIMANO freewheel is supposed to use a 1/2 x 1/8in. I am using a single speed chain, but what size? i dunno.

any pointers to threads discussing this in detail would be helpful. thanks.
like this, but more basic-er: https://www.parktool.com/blog/repair...-compatibility

no, i really don't know what i'm doing with these single speed set ups....

cheers!