Jump to content

Landeron Hahn 15.5 ligne completed

noirrac1j
 Share

Recommended Posts

noirrac1j Distinguished Member

noirrac1j

Posted
Posted (edited)

With the indispensable help from my buddy J Trenalone on the West coast, this ~80 year old monopusher chronograph is back in working order.  There were a multitude of issues getting this working. The balance staff, escape wheel and mainspring all gave their share of headaches. Slide1.jpg.53d810b4c644d5b150e026a2240c1335.jpgSlide2.jpg.4818e166cb0d3e405da57239eea54951.jpg

I also have to mention that I bought TWO new mainsprings from Cousins that broke one after another when tested. The mainsprings are listed as GR5032 and are supposed to be correct for the Landeron cal 2, the cost 11.80 each and after shipping  £22.64. I think they were no good to begin with because of age.  I finally had to buy one from Borel using the measurements form the original, which had set and needed to be changed. Finally it has come together. I you try to find these, you'll quickly discover they are difficult to come by. Its someone else's watch, and I appreciate the opportunity to work on this type of early column wheel chronograph20190204_102613.thumb.jpg.3abbc1ffa121c05252964c1d81193fdc.jpgSlide2.jpg.cfe5c16d17866ce541e08523dc3b3bc8.jpg

J

20190204_103101.jpg

Edited by noirrac1j
  • Like 3
  • Thanks 1
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
 Share
Go to topic listing


  • Recently Browsing

    • No registered users viewing this page.

  • Topics

  • Posts

    • ManSkirtBrew
      1972 Bulova President "E" Sea King 11ACACB movement

      By ManSkirtBrew · Posted

      Unfortunately I'm not that lucky. I started on the train side and after I noticed the binding I pulled everything out except the driving wheel to rule everything else out. It still binds. I'm going to double check that the pinion is fully seated on the staff first, then if no joy I'll push the bridge jewel up a fraction of a mm. Fingers crossed!
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Happy to have helped, great way to start the day with a win! 🥳
    • doober
      Rado rotor removal

      By doober · Posted

      Thank you for the advise!! It worked. The setting screw was a lock/unlock to remove the rotor. 
    • GuyMontag
      1972 Bulova President "E" Sea King 11ACACB movement

      By GuyMontag · Posted

      I have that French tech sheet too, it is a little different than the English one (eg, it doesn't have the auto works diagram). BTW, it looks like you are looking up the case number in the 1979 ABC supplement. The 1974 ABC catalog does have the 3093 case. As you determined it takes the 1222-5 crystal.  When I serviced my President 'A' (which also takes that crystal), I was able to fit a 29.8 crystal from my DPA crystal assortment. Those are, in my opinion, a great deal. The assortment comes with 10 sizes each from 27.8mm to 32.4mm in 0.2 increments. I pretty much use them for any non-armored crystal that takes a high dome crystal. I think they no longer make them but Cousins has still has some in stock but when I bought them they were around $40 for the set and now they are around $100. Still, at 40 cents a crystal it's still a good deal. For the large driving wheel, I remember I once assembled the keyless/motion works first and when I placed the large driving wheel it was interfering with the setting wheel on the dial side as the teeth were not fully meshing and it wouldn't fully seat. If that isn't the issue I got nothing and am looking forward to see how you solve it 🙂
    • Waggy
      Rado rotor removal

      By Waggy · Posted

      Not sure, but just looking at it, it seems like the screw on the right may be a fake? The one on the left may not be a screw in the regular sense at all, rather a 2 position device, I think you need to point the slot towards either of the 2 dots and one will secure and one will open. Like I said this is just my best guess looking at the pictures.
×
×
  • Create New...