Jump to content

ETA 2824 or Something else?

Berwolf

By Berwolf
in Identify This Movement or Watch

 Share

Recommended Posts

Berwolf Member

Berwolf

Posted
Posted

I recently purchased a vintage Techno's watch that is marked as an ETA 2824 movement. I purchased this watch just for the movement to use in a mod watch project. 

I performed a service on the watch and in the process lost a date jumper spring. When I went searching for the 2824 date jumper spring I found my movement didn't match what was available. After digging around I found the date jumper spring that I needed was from a 2783 movement. Today I tried fitting a new stem for a 2824 movement and also found that this does not fit. It appears there are slight differences in thickness for the ends of the stems in the watch currently vs. the 2824 I ordered. Now I am wondering if I have a fake, franken or some weird vintage of ETA 2824.

Would appreciate any insight as what I have found is if it is a 2783 movement it may not work for my project. I have attached pictures of the movement showing 2824 on the plate and the front date along with the two stems. The stem with the crown is the current one.

PXL_20240122_223132556.jpg

PXL_20240122_223709769.MP.jpg

PXL_20240122_223328184.jpg

Marc Distinguished Member

Marc

Posted
Posted

I suspect that you have an example of the original 2824. Since then there has been a 2824-1, a 2824-2, a 2824-A2, and a 2824R (according to the Jules Borel interchange site.

The original 2824 did use the same date jumper spring as the 2783, the other variants did not. The original also used a different stem to the later variants.

So neither a Franken nor anything weird, you simply have the original.

  • Like 2
  • Thanks 1

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

    • HectorLooi
      Hour hand won’t go past certain spot when adjusting time forwards

      By HectorLooi · Posted

      If the watch is new, just return it to the seller for a refund or replacement.
    • Randy55
      Hour hand won’t go past certain spot when adjusting time forwards

      By Randy55 · Posted

      Keevo, Welcome to the group ! I'm thinking that you have some damage to the hour, and/ or minute wheel. Possibly just a bent, otherwise damaged, or missing tooth.   Your photo didn't post that I can see. I think you'll have to open it to start really finding the issue. Best, Randy
    • Neverenoughwatches
      Diy rotary cleaning machine

      By Neverenoughwatches · Posted

      An industrial break cleaner , like Holts does a good job of rinsing off paraffin 
    • mikepilk
      Cap jewel with what looks like a circular engraving around the edge

      By mikepilk · Posted

      In cap jewels on several watches I have serviced over the years. I've recently serviced a couple of Longines movements where the cap jewels were colourless. They are a real pain. Without colour they disappear when immersed in any liquid for cleaning 😲 Not necessarily. Cousins do a 10ml bottle for £26 which will last me for years. That's just half the price of a simple Bergeon silicone cushion, so not too expensive 🤣
    • BobG
      Etachron regulation system

      By BobG · Posted

      I wanted to post an update as I have two movements running really well now, 230-250 amplitude , 0.5 and under beat error, and +/-8 seconds or so. I removed the hairspring assembly in order to start over and noticed that the terminal curve between the stud and regulator arm was distorted. The stud was lower than it should be. I massaged the curve to look pretty good and reinstalled it. I followed Alex's video advice, best I could with 10x magnification, and with the regulator arm set in the middle of the curve I adjusted the stud so the spring was centered. I then made sure I could move the regulator arm the entire terminal curve without upsetting the coils. I then put it back on the Timegrapher and began closing down the regulator pins until I saw a change in amplitude which means to me that the pins were now pinching the spring. I opened them slightly and it looks good except I have a 0 on dial down, +3 on dial up but -16 on crown down.  I'm a bit stuck on how to adjust out the positional error. I also noticed a drop in amplitude, 180-200 on crown down. In the other video link I posted at about minute 26 if I remember he adjusts out positional error by manipulating  the regulator pin gap. With crown down the hairspring falls away from the pin and the rate slows so he closes the pins a bit to keep them tighter in crown down position. That means the spring is tighter on dial up as well but then he moved the regulator arm to slow the movement.  There must be some Seiko experts here that have some methods for dialing out positional errors. 
×
×
  • Create New...