Jump to content

Recommended Posts

Posted

Hi all and a merry xmas. I have a Kern anniversary clock which I have restored. The clock runs well however runs extremely fast despite turning the adjustment +/- clockwise fully. I have had a look at past forums and note that it might possibly be an incorrect sized torsion spring/wire. I believe the current wire in the clock has been replaced by someone previously based on finger prints found on covering sleeve. The pendulum weights (4) turn approximately 120 degrees. Is anyone able to advise if I am correct or an alternative idea to correct problem? Would appreciate any help including the correct sized spring and where to find/buy them. Many thanks for any help given2130923817_DSCN06311.thumb.JPG.32f25583dcd44cd5a975fc1c93f1c92b.JPG1790354123_DSCN06301.thumb.JPG.36a4fb5000f0a5afb9160be17805180c.JPG.

Posted

Hi If you can beg borrow or buy Charles Terwilligers book, the 10th edition  which is the bible on 400 day clocks, there is all the information you require, or as an alternative post a full picture of the back plate and members will be able to Identify the model and the spring type you require.

As Old Hippy said  the condition and length of the spring and its thickness and the positioning of the fork are critical to the operation              Happy New Year       all the best. 

 

Posted

Oldhippy is correct it will almost certainly be a suspension spring fault. Too strong or too weak results in running out of adjustment. It is possible to thin the spring if careful. The method is to lay the spring on a flat surface and carefully stroke the spring with a fine Emery ie 2000 grit to remove material. BUT you must not kink the spring in anyway. 

Posted

Hi Konrad if you decide to buy the book that's suggested have a look at Cousins uk wholesale i recently bought one from them at £33.10 +vat and postage. Or a company called Walsh they have it for £38

  • 3 weeks later...

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.



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Thank you Mike for the hints! I did go to HS Walsh and buy few tools that will help me start 🙂 I also went to the Royal Observatory at Greenwich, I saw the collection and it is amazing!! Harrison H4 is indeed an amazing manufact, and the story behind it (about the prize from the government) is incredible. Again, thank you for your suggestions, you made my day!
    • Hello watch enthusiasts, I'm encountering a peculiar issue with my Seiko 4006 movement and could use some advice. Specifically, the alarm bolt yoke doesn't function properly when I tighten the screw on the calendar plate directly above it. This results in the alarm not functioning as it should. However, when I leave the screw loose, everything works perfectly and alarm bolt yoke is functional as should be. I've tried replacing the alarm bolt yoke, the alarm bolt yoke spring, and even the calendar plate itself, but unfortunately, none of these changes have made a difference. The only workaround I've found is to keep the screw on top of the alarm bolt yoke loose. Has anyone else experienced a similar issue or have any insights on what might be causing this? I'll also be sharing pictures to help illustrate the problem. Looking forward to your suggestions and advice! TT
    • Some news. After screws removal from donor movement, a family shot. From left to right: original (broken) screws new screws purchased from Cousins UK, as "Slava 2428 clamp screws", that didn't fit. They actually & definitively look too large screws removed from donor 2428 movement Here we go! First one is in position: Let's continue on the other side: Done! Next step will be putting back the hands. Another discovery for me! I keep going ...
    • OK, I have been there many times and know several solutions. As I believe, the pinion (the part with the leaves ) is on the other side of the arbor, yes? If so, then there is easy way to solve the problem. You can grind from one side as shown on the drawing with dremel tool. This will allow to push out the broken drill bit easy from inside. Then You will be able to insert new pivot and then You can solder it in place and in the same time to fill the ground portion with solder. Of course, I mean solder for PCBs, but not the led free one - use led containing solder, the led free solder which is offered in common hardware stores is for idiots.
×
×
  • Create New...