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Mauthe alarm clock?

HectorLooi

By HectorLooi
in All Things Clocks

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HectorLooi Distinguished Member

HectorLooi

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The hairspring was probably a replacement and was never shaped and trimmed.

By trial and error, I was able to get the correct length for the spring and trimmed off half an inch of it. And with another half an inch through the hairspring stud, I managed the get enough space to form the endcurve. The spring moves up and down between the regulator and the 2nd coil of the spring doesn't hit the regulator when it breathes. 

I cleaned up the case and sprayed silver paint on the sides, top and bottom panels. I also reprinted a new dial on cardboard. Looks good for the moment but I would really like to get the case chrome plated.

20211203_205138.thumb.jpg.c1f7e76a47d92738024d8c88f697dc67.jpg

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      By LittleWatchShop · Posted

      I am an amateur, so there's that. I do not get fixated on amplitude, lift angles, and beat error. However, 4.8ms would bug me if it were my watch. But you must judge your own skills to appreciate the possibility of going backward. I suggest, that you button it up let your friend enjoy the watch for now. As your skills progress, come back to it and correct it. I assume that this watch has a fixed hairspring pin. Some modern watches have an adjustable pin along with adjustable regulator. These are trivial to get in beat. I own a valjoux 726 my dad gave me on my 18th birthday (a looooong time ago). I broke the ratchet wheel with an aggressive wind 4 yrs ago. I have been waiting for my skills to progress before doing a service. I am close. Your advice is well placed and I will apply it.
    • tonydagee
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      By tonydagee · Posted

      I didn’t find any anomaly to the left of the red mark…reflection? this is the balance in its pivot in the inverted assembly. i can’t see any obvious kinks  and the spring is flat as far as I can see. Either the stud screw is missing, or it’s glued in… I don’t know. I’m loathe to fiddle with it. Any further insights? Thanks!
    • Bonefixer
      Breitling Navitimer 806

      By Bonefixer · Posted

      Update!  I've dismantled it, cleaned all the glue off, and rebuilt and lubricated the base movement. I'll leave the chrono part for another day. It's running well - great amplitude and keeping time, but it's got a beat error of 4.8ms.    How important is it to correct this? I'm worried that the potential for making things worse having to take the hairspring off and on repeatedly to adjust this. Would anyone here accept it at that?
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