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Odd teeth and pinion count do pop up. As you have said timing screws would be the place to start, you don't want to cut a contrate wheel that would be the last resort. It is more than likely the hair spring broke at some time. How about a nice photo of the troublesome clock. -
By Michael1962 · Posted
The 6 watches went today for $70 + $10.75 postage. Not me. Thinking about it, I just need to get myself going with what I have which is enough for now. Still have to get the workshop finished. First things first. It was hard to not bid though. I doubt I would have gone that high. Would have worked out to just over $13 per watch which is outside your club rules anyway. -
Thanks for the thoughts. I didn't think the hairspring per se was the problem: 18000bph is by far the most common rate, it looks nice and evenly coiled and even fitting a new unused platform gives the same result. All the teeth on the wheels, including the contrate, are fine - so there's no skipping. A tooth count may solve it: Wheel teeth leaves Centre 64 Interm 80 12 3rd 64 8 contrate 70 10 scape 15 8 This indicates a required beat of 16800bph which is a rate I've never encountered before but might be common to some watches (about which I know little). So despite the hairspring looking perfect visually, it should be longer. It's anchored at the very end so I can't do much about that. I will try adding a couple of balance screws to slow it down as unless other members have a better idea, the only other option would be to cut and mount a new contrate wheel with 75 teeth - a bit odd ! -
By Neverenoughwatches · Posted
Bergeon pro = slightly less shite version but more money than the original shite version. -
Welcome! To which part of India will my greetings go? Frank
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