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Poor Amplitude Diagnosis

jdrichard
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jdrichard Distinguished Member

jdrichard

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I was working this 18S Pocket Watch and thought I had it fixed. Ran it for two days and all seemed well. Then I decided to look at the movement, I saw a very poor 30deg amplitude. So I thought it might the rubbing of the side of the hour wheel on the hole of the face. So, I removed the face and made the hole slightly bigger and that did not fix the problem. I took a closer look at the balance and saw the three of the hairspring turns were stuck together. I than demagnetize the watch and carefully separated the three turns.  I started to run a lot better. That was part of the problem. The other part was the works not moving easily. That was fixed by oiling the minute, hour and intermediate gear posts. They had been previously cleaned but needed to be moved a bit. That fixed the problem and now the amplitude is very good and the hands and face look great. Again fun:)

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