Jump to content

Eterna caliber?

ITProDad

By ITProDad
in Watch Repairs Help & Advice

 Share

Recommended Posts

ITProDad WRT Addict

ITProDad

Posted
  • Author
Posted
According to Dr ranfft 
Mainspring     1.10*11.0*0.11 mm .

Thank you!! But how did you determine the caliber?


Sent from my iPad using Tapatalk
anilv Distinguished Member

anilv

Posted
Posted (edited)

The movement reference is usually found under the balance (circled in red). The longer numbers (not always present) here circled in yellow is the serial number.

Anilv

eterna.JPG

Edited by anilv
  • Like 1
  • Thanks 1
ITProDad WRT Addict

ITProDad

Posted
  • Author
Posted
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&0&2uswk&Eterna_1429U
Eterna caliber 1429U is engraved right under the wheel ( balance). 
High grade movement patented by Eterna.

Thank you, Nucejoe. I wasn’t sure that was the caliber or another reference. Just ordered this mainspring from Cousins. Already disassembled and bathed in the ultrasonic. Cleaning the details and capped jewels. It is in surprisingly excellent shape. Case is a bit dirty but nothing appears un-cleanable. Will post finished photos when I have it back together. Than you sincerely for the education!!


Sent from my iPad using Tapatalk
ITProDad WRT Addict

ITProDad

Posted
  • Author
Posted
The movement reference is usually found under the balance (circled in red). The longer numbers (not always present) here circled in yellow is the serial number.
Anilv
eterna.JPG.e50b05eaf910ac55289eef622f21c286.JPG

Thank you, Anilv. You and Nucejoe have been a great help. I will post the completed work after I get the new mainspring from Cousins and get it back together. I genuinely appreciate the help and added learning you provided.


Sent from my iPad using Tapatalk
  • Like 1
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • Nucejoe
      Bizarre state of the balance! Miyota 8200

      By Nucejoe · Posted

      No need for special tools. Loosen stud screw and just push hairpsring stud out of the hole.  Regulator arm is spring circled around the setting housing, insert cutting edge of a safety blade under it,  opposit ( 180 degrees) to regu arm itself, and pry  half of the circle up, you then see how it all is made at put together. Remove the mobile stud carrier as well,  reinstal in proper order, first goes on the stud carrier, second put the regulator arm on top and press it home. Exactly as nev explained above. Trueing inner coils is done when balance complete is seperated from the cock.   The part thats bent over itself. 1-Unbend hairspring as much as you can when balance is seperated, just grab the hairspring stud in tweezers , grab hairpsring with another tweezers streighten with  strokes as you  move the second tweezers  away from the stud. 2-Move stud carrier and regulator arm as wide/ apart as they go , to provide max space which comes useful in next step. 3- Fit hairspring stud, into stud carrier hole. 4- Put balance and cock ( when attached together) back on mainplate.  5- You have enough space to grab hairspring in  tweezers to shape as you move your tweezers  away from stud.         
    • RickTock
      Looking to try servicing an old movement

      By RickTock · Posted

      Probably more than you need to know in these two vids, but sharing because I found them quite interesting. 🙂  
    • SamLiddle
      Bizarre state of the balance! Miyota 8200

      By SamLiddle · Posted

      And then the problem of the stud holder and regulator which are on the wrong sides of each other:   I am baffled as to how this will have happened?  They can't re rotated into place, the regulator pins stop the spring stud from moving past. I don't think I can remove the regulator and/or spring stud without a staking set? 
    • nevenbekriev
      Help! Mainspring releasing power!

      By nevenbekriev · Posted

      Just to inform that this is not a shock protection, just end stone fixed in place by the spring.
    • AndyGSi
      Could anybody work on a screw this small?

      By AndyGSi · Posted

      I had the privilege to be put on secondment to RR Ansty just outside Coventry to help design and build a power station at the old Fort Dunlop site in Birmingham. The sound of those Trent engines when they fire up is something to behold.
×
×
  • Create New...