Wifey’s cuckoo clock is plugging along and I’m trying to get it to run at a speed as close to correct as I can.
Out of the box, it was losing 35 seconds per hour. I’ve been adjusting it and had it down to 0.32 seconds per hour loss over 48 hours. Again increasing the speed a tad resulted in a loss of .44 seconds per hour over the next period. It should have been a lesser loss than .32 but was instead more. I adjusted again and just concluded a run of 54 hours over which it lost just 5.48 seconds (0.10148 seconds per hour).
Without making an adjustment, I’m timing it again now for another 48 hours or so to see it it is consistent at that 0.1 seconds per hour. I’ll be adjusting it again later in any case as I prefer it to be running a tad fast instead of slow. Were it running fast, I could simply remove the weight allowing it to stop for a period to let it lose a little time and get back in synch. It’s running behind, I have to nudge the minute hand a bit to correct it. Crude.