ETA 2892 hacking?
Good day fellow crunchers!
Are there any instances where an ETA 2892 movement would not have hacking?
Context: I have a vintage bulova, I’m guessing around year 1979.
It was losing a lot of time so sent it for servicing. Pretty sure it had hacking before sending it in.
After first servicing, it ran too fast (gained 5 min after an hour). Still had hacking.
Brought it back to the shop, to get it regulated. Shop owner said he will send it to another technician.
Watch came back 2 weeks later, the 2nd time technician claims this movement doesn’t come with hacking. The watch is running fine now but doesn’t have hacking 🫠
Could it be that the initial hacking was possible due to some faulty mechanism? Then after servicing the watch there was no hacking 😂 I’m no watch expert but this scenario seems unlikely..
I couldn’t find much on Google or forums, and whatever I could find had conflicting views.
Would appreciate any of your insights!
It should hack, Omega used movements based on the 2892.
Good luck getting it fixed 👍🏻👍🏻
I have no evidence or knowledge but I highly suspect that the linkage activated by the stem got tripped up. Probably nothing broken but stuff isn't lined up properly.
http://www.ranfft.de/cgi-bin/bidfun-db.cgi?10&ranfft&&2uswk&ETA_2892&
My favorite movement data base.
If there was a non hacking version, it would most likely be mentioned there.
In the majority of all hacking movements, the actual mechanism is a very thin and long piece of brass that, when the setting lever is moved by the stem, directly jams the balance wheel. If the part is bent it won’t reach the balance wheel. Should be relatively easy to fix.
Or the part is lost or broken off, then I suggest a donor movement for parts, or just live with it.
The article linked below is a history of the 2892 movement. It contains images of ad copy from 1976 indicating that the movement has a “stop seconds” function. So, hacking was always a feature of the movement.
https://reference.grail-watch.com/2020/05/08/confirming-the-eta-2892-timeline/amp/
Shoot me a message. I have a billion of the hacking stop levers. Happy to install one for you for free.
I have no evidence or knowledge but I highly suspect that the linkage activated by the stem got tripped up. Probably nothing broken but stuff isn't lined up properly.
I’m not sure either.. seems quite improbable that it missed the technician’s eye! I certainly hope the movement wasn’t swapped out 🫠
In the majority of all hacking movements, the actual mechanism is a very thin and long piece of brass that, when the setting lever is moved by the stem, directly jams the balance wheel. If the part is bent it won’t reach the balance wheel. Should be relatively easy to fix.
Or the part is lost or broken off, then I suggest a donor movement for parts, or just live with it.
Thanks for sharing Tristan, the part which I’m confused is that the technician is saying this movement doesn’t even have hacking..
The article linked below is a history of the 2892 movement. It contains images of ad copy from 1976 indicating that the movement has a “stop seconds” function. So, hacking was always a feature of the movement.
https://reference.grail-watch.com/2020/05/08/confirming-the-eta-2892-timeline/amp/
Thanks for the info! Would there be some sub variants that don’t support or lists hacking as optional?
Shoot me a message. I have a billion of the hacking stop levers. Happy to install one for you for free.
Thanks CLtimeworks! Too kind of you. I am however based in Singapore.. would that be where you’re located too?
Thanks CLtimeworks! Too kind of you. I am however based in Singapore.. would that be where you’re located too?
Unfortunately no, I'm located in U.S.