Originally Posted by
Hobbiano
What about the other chain, and rings? Are they worn also? And the freewheel may be (probably) toast too.
No, the other chain ("timing chain" in tandem parlance) and those rings are okay because I replaced them not so long ago. The freewheel is good because I replaced it no long ago with one Pastor Bob rebuilt.
Good suggestions though.
I tried to build this bike with as much original or original-like equipment as I could manage. That rear crank is a modern crank cut down to 140mm but the front is original Stronglight. That means I had a spare timing gear, since the rear crank is a modern arm with (I think) 74mm BCD. Eventually I'll have to switch over to newer stuff, I guess.