After finally getting some slightly better tools than my eyes and ears I have been recording my clock's escapement via a timetrax amplifier outputting to software on my pc to analyze the wave form. And I cannot for the life of me get the beat error to be less than 0.150 s. The error changes a bit as the clock settles into its beat but its generally somewhere between 0.100 s and 0.200 s off from the counterclockwise to the clockwise rotation of the pendulum. I haven't found anywhere what the acceptable beat rate error is on one of these very slow moving clocks. My limited experience thus far has been with wristwatches so this much slower moving machine has been somewhat frustrating to me. I had cleaned it initially because it was not running, oiled it, and set the beat the best I could by ear and visually and gave it back to my coworker after having it run for two weeks straight at my home. Upon receiving it he set it up and could not get it to run more than an hour or so. I took it back and began the process again, this time taking the time to replace the mainspring as it was admittedly worn out ( not even twice the size of the barrel when removed). I've now replaced the mainspring and with my new equipment I set it in beat (probably alot better than I originally did by ear). Other than the slight beat error I believe it will run fine but will let it sit on my mantel a while prior to giving it back. Does anyone have any suggestions as to what may have been stopping it besides beat error or a worn out spring? I should also mention I replaced the suspension spring to the correct length it it accurately tells time. How on earth do people work on these things and know that it will run a whole year with no problem? Also one other little thing I noticed while looking at the wave form I recorded is that the escape wheel moves slightly right before actually dropping a tooth on the clockwise rotation of the pendulum. Is this normal? It's only in that direction. Any help would be wonderful. This may be a bit of an information dump but I would really like to get this working for my coworker as it was his mother's and he's never seen it run even in childhood.
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