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Showing results for tags 'rate'.
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Valjoux 7750: Rate Behaviour Question
Hoe posted a topic in Watch Repairs Help & AdviceDear Watchmakers I recently serviced a Valjoux 7750 and I noticed that the movement runs too fast in the first let’s say two days until it stabilises to a useful rate. With amplitudes between 300° and 264° and beat errors between 0 ms and 0.2 ms depending on the position on the timegrapher I consider the 30 years old movement as “healthy”. I installed a brand new mainspring and wore the watch during this test. I place it dial up during the night. Furthermore, I think due to my home office status and the lack of movement, it doesn’t wind enough so it is slowing down since 31st March. See my Excel diagram in the attachment. Why does it run so fast at the beginning? Is something wrong or is this a normal behaviour? Somewhere I read that watchmakers regulate watches after they ran for 24 h. Best wishes
Problem with a timegrapher?
FitOutPost posted a topic in Introduce Yourself HereHi, my name is Ross. I am a rookie watch enthusiast and I am really puzzled here. Could someone explain to me what kind of a problem am I facing with my timegrapher? I do two sets of measurements with the same watch (1 day or 6 days apart) and receive vastly different results - to the point of being completely different from what I observe in real life. For example, my timegrapher shows that my watch is running fast (or ahead of time), while in real life I observe that it runs 7 seconds per day behind. I even recorded a video about it so you could see it for yourself: https://youtu.be/mhGzf6aLMlY How should I interpret that? Am I doing anything wrong? Problem_with_Timegrapher_-_Knowledge_Sharing__16.mp4