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I’m fairly new to this and have worked on maybe 30 or so vintage and new movements. I recently went through a NH35 movement that I picked up with low amplitude. 140-150 degrees and impossible to regulate. I did find that the train bridge was not flat and when the screw nearest the barrel was tightened the wheels no longer spun freely so I replaced that with a spare and all good. I cleaned it and lubricated it, including the balance cap jewels and it came right up at 220. I could get the beat error down below 0.5 but I’m chasing the rate all over. It will be down -15 and I’ll just touch the regulator arm and it will be up +15. This is a practice movement for me as I want to learn and improve making positional error corrections on the Etachron system. The amplitude has fallen off a bit as well, 200. I’ll let it run overnight but is there anything I’m missing that can cause the rate to change so significantly with a very very small movement of the regulator? Could the hairspring be damaged and very particular to both the regulator and stud position? Could the regulator pin positions off? Either too open or closed?
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By WatchDude00 · Posted
Hello All! I am a retired widower who loves watches. I tell my friends I am akin to an engineer; I fix 3, and break 6. I am happy to be here -
The thing is you have to provide Longines with a serial number AND a reference number when you fill the form. I have the first one on the movement, but I can't see the other one, which sould look like L.xxxxxxxxxx. I mentionned the number inside the case and I sent the mail. Wait and see... Here are some picture I took yesterday when I received the watch.
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I was in Leeds not too long ago. I went to my first (and only) Premier League game, Leeds and Aston Villa. 0-0 tie. (Obviously this was prior to relegation.) Loved the city, actually.
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