Jump to content

400 day clock after service vids

clockboy

By clockboy
in All Things Clocks

 Share

Recommended Posts

clockboy Distinguished Member

clockboy

Posted
Posted

For those who have not serviced /repaired a 400 day clock I thought I would show (by vids) how absolutely everything must be correct for a successful outcome. The first vid is after cleaning and re-assembly using the original suspension spring. At first all looks OK but It was running slow and I just run out of adjustment. When I measured the original spring it’s thickness was 0.0019” the correct thickness (using my 400 day ref: book) should be 0.0023”. When the new spring was fitted it ran with a better rotation but it then suffered with what is called “flutter” This is where the escape runs away uncontrollably for a brief period. To remedy this the folk that operates the escape was moved up the suspension spring a fraction.Also there was a slight wobble when the pendulum rotated this was traced to the lower suspension block not being absolutely centred and on the skew ( very marginally) if anything now it has to much rotation but it is keeping excellent time.

 

Before correct spring fitted

IMG_2575 (1).mov

 

After the correct spring is fitted (with tweeks)

Vid 11.mov

  • Like 1
Link to comment
Share on other sites
oldhippy Distinguished Member

oldhippy

Posted
Posted

Well done with that. That is good points for those that want to undertake one of these clocks for repair. Everything has to be perfect Did you not check to see what the position the pallet forks should have been at in the bible of these clocks?. I found it good practise too always fit a new s/s, a slight kink or mark on the old one would send the pendulum out of line. 

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

    • aac58
      Rare Seiko 5actus Watch??!! With a lot🤪🤔😲

      By aac58 · Posted

      This is not rare at all, the dial code and case code don't usually match.
    • Kkramme
      Coil for old Seiko Credor -- 4002920

      By Kkramme · Posted

      Good question!! Anyone know of a substitute movement??!! 🤔🙏
    • Kkramme
      Rare Seiko 5actus Watch??!! With a lot🤪🤔😲

      By Kkramme · Posted

      Interesting issue that I just noticed: this Seiko 5actus Watch from 1977 has a calibre listing on the dial of 7019-8030R but on the case back it says 7019-8010!! Like a mis-printed coin, is this watch therefore worth a lot of money for its rarity?? 🤪😲🤔🤪
    • Mercurial
      Smit

      By Mercurial · Posted

      I wish that was the case. The Aegler movements used in the early days by Wilsdorf & Davis (for brands like Rolex and Rolco) came in several sizes and without designated calibre numbers that survive.  They become a bit easier to identify during the 1920s. Below is an Aegler-Rebberg, 25.74mm in diameter. It’s from a woman’s Rolex wristwatch. Stamped Rebberg and 500 on the dial plate (but it isn’t a Rebberg 500, it’s the wrong size).  I’d be interested if anyone can identify the movement.  It is based off the Aegler Nr.1, circa 1903, but they based many many calibres of different sizes on it. The closest I have to a positive ID is the  ‘Rolex Nr.50’ circa 1917, but no dial side images or movement sizes are available in the references. There are identical looking movements in many sizes.  The 25.74mm of this movement is a particularly strange size for the era, it equates to 11.41 lignes.      Best Regards, Mark
    • GuyMontag
      FHF70 balance jewels settings

      By GuyMontag · Posted

      It looks like this movement comes with a number of different shock settings. Emmywatch shows that it comes in versions with no shock settings, 'Incabloc', 'shock resist', and 'Supershock'. Perhaps the different settings position the impulse jewel/roller table in a non-ideal position relative to the pallet fork/guard pin. Are you able to check under high magnification if the pallet fork and roller table are able to operate without any interference? Just for fun I took a look and I have one FHF 70 in my collection, a West End Secundus with a non-shock protected FHF70. I had a note with the watch that said, "Movement is stamped 'FHF 70', but the FHF70 looks to have sub-seconds instead of center seconds movement (??)" but that a google search turned up both types for this movement. EDIT: I just took a look in my parts drawer and I have a few of these movements, both in center seconds and sweep seconds, but they all are non-shock protected.  
×
×
  • Create New...