I printed 2 of these, 1 for myself and another for my Father. Both are using the Rev 2 updates, mine is in standard PLA, the gears for my Fathers I think are silk PLA.
Mine ran for 2 months without issue, now is exhibits all the symptoms of the sticky gear issue, my Father ran for about a month before exhibiting the same issue.
In both cases we have ruled out the pendulum, it swings for 20+ minutes. He has had more time than I to investigate - he's retired! He has found that the debug guide of a weight directly on the lines doesn't work, I think it is 1lb in the guide, but it won't power the drive train, a little nudge from the gear with the internal ratchet an it will run for a short while before stopping again.
Any ideas? Any idea on how we figure out the issue?
Tom
What is the behavior of the escapement? Is it moving? Or does it appear to have lost its energy?
I have also seen similar behavior. The initial suspicion was "sticky gears", but the root cause turned out to be sideways thrust pushing against the escapement. The escapement is so lightly loaded that a tiny amount of pressure can stall it. Adding additional drive weight in this situation just adds additional sideways pressure and doesn't let the clock run any better.
The helical gear fix was a good partial fix, but the "Rev 2" fix is even better. It adds a spacer with a set screw to isolate the escapement better.
If the problem is something else, then repeat the standard debug steps. It may also help to mention which runtime option and how much drive weight you are using. The 8-10 day options are significantly more reliable and still provide an easy to live with clock.