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CYMA Pocket Watch with 775 movement

Daniel123
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Daniel123 WRT Addict

Daniel123

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Hi, I thought I’d share with the group this project. When I un-boxed the watch I immediately realised I had a few job to do, the Crystal had yellowed over time and the crown wasn’t winding. On closer inspection I found that the ‘setting leaver spring’ was broken as was the mainspring and the whole movement was not particularly clean. 
I tackled the cleaning first by hand while getting some useful advice from the forum on where to find a new setting leaver, I ordered new parts while getting on with cleaning and inspecting all parts. Rebuild was a pleasure until I realised I had Installed new mainspring upside down ‘slap head moment’. Purchased some lume powder on eBay a first for me seems to be working fine. Now checking time for a couple of days then it’s getting packed up and posted to my son for his birthday. Hope he likes his 70 year old peace of military history :)

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    • DDean
      Incabloc Lyre Spring & Low Earth Orbit

      By DDean · Posted

      Just a note for those who come searching for information on this topic in the future.  I did eventually find the Mark's video on how to replace these springs, as someone observed, he does in fact make the replacement look easy.  (It actually is relatively easy once you have the knack of it.) If you're enrolled in one of Mark's online courses, the demonstration of how to replace this spring is in the Bonus Videos section of his course site, and is called "C2B1 – Sea-Gull Style Shock Springs".
    • RichardHarris123
      Setting lever spring

      By RichardHarris123 · Posted

      If the metal was twice as thick, it wouldn't snap so easily.  The thickness is governed by the space available so you can't use thicker metal.  If you glued two pieces together, the likelihood of snapping would be reduced.  That's my theory anyway, could be wrong. 
    • JohnR725
      Pocket watch escape wh

      By JohnR725 · Posted

      there are various approaches to learning watch repair. A lot of people want to jump right in and every single watches something to be repaired restored. But other times like this it's disposable it's here for you to learn and when you're through learning you throw it away. yes you definitely should try this you have a learning movement you need to learn and the best way to learn is by doing something.
    • nevenbekriev
      Pocket watch escape wh

      By nevenbekriev · Posted

      Sorry, the friction will be so great that the wheel will barely turn, if the movement will start at all, the amplitude will be verry lo.
    • Bonefixer
      Pocket watch escape wh

      By Bonefixer · Posted

      If I can’t re-pivot the wheel, the logical thing to do is to descend the pivot hole.  Plan is to either stick a suitably sized hole jewel (from a barrel bridge or something) or fashion a blob of epoxy on the underside of the escape wheel cock so the wheel sits on its one pivot on the base plate and the staff with the broken off pivot (which I’ll polish as best as I can) becomes the upper pivot. As long as it doesn’t foul the 4th wheel it should work? I know it’s a bodge job, and if this were a rare movement, or belonged to someone else I would not do this. I’m just interested to see if I can get the thing to run. 
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