Jump to content

Eta 2894-2


Recommended Posts

Hi all. I have a broken subsidiary dial pivot (hope that’s the correct terminology) on a eta 2894-2. I realise the chronograph module is supposed to be non serviceable but my research shows that there is a Swatch group company that does sell spares for this module. Can anyone tell me who this is please. Many thanks.

 

 

Sent from my iPhone using Tapatalk

Link to comment
Share on other sites

The module is manufactured and serviced by Dubois Depraz but I believe they only accept work from the dealers.. ie Omega or other brands that incorporate this module in their watches. Also they are not serviced per se , but replaced on an exchange basis.

Anyone else can confirm this?

Anilv

 

  • Like 1
Link to comment
Share on other sites

Well it depends .. ETA themselves have this movement listed on their chronograph selection nowdays.
https://www.eta.ch/en/our-products/mechanical-movements/mecaline-chronographs/eta-mecaline-chronographs-2894-2
If you push the technical Communication button on the site you will find the Tech sheet for it too. 
If your movement is looking anything like the one above then getting the parts from a third part dealer I would look for them at https://www.cousinsuk.com
I attache a Picture so you can try to find the correct part.
Hope this helps you on your search..

ETA2894-2.png

  • Like 1
Link to comment
Share on other sites

33 minutes ago, Specializedjim said:

Yes that’s my movement. But I don’t think the part I need is listed. Can anyone confirm the name of the part I need in the picture attached from the chronograph module of a eta 2894-2. Many thanks for your help.

As mentioned above the module is made by Dubois Depraz not ETA, unfortunately you will not get help from them, that's the standard Swiss business practice.

  • Like 1
Link to comment
Share on other sites

Many thanks for the info. I’m a bit confused as to the manufacturer as I have been told the chronograph module is actually made by eta not Depraz. Any way that doesn’t matter I would still really like to know the correct terminology for the part that’s broken. Thanks again.


Sent from my iPhone using Tapatalk

Link to comment
Share on other sites

1 hour ago, Specializedjim said:

Yes that’s my movement. But I don’t think the part I need is listed. Can anyone confirm the name of the part I need in the picture attached from the chronograph module of a eta 2894-2. Many thanks for your help.

Unfortunately JDM is partly right the chronograph module has part number 8510 and is only sold as what ETA calls an "integrated part".
You have to be authorized by ETA to buy it from them but even then it comes with an hefty prize.
At Cousine you will find it as a "Restricted" part.

I think the best chance is to buy one "Second hand" but there isn´t any parts for it out there.

Used module:
https://www.hhcdsjstore.com/index.php?main_page=product_info&products_id=486718

New:
Cousineuk Chronograph Module Assembled, Height 1 ( 8510 ), ETA 2894.2 ETA289428510 (Restricted)
https://www.boley.de/caliber/watchmovements/eta/4873
http://www.startimesupply.com/merchant2/merchant.mvc?Screen=PROD&Store_Code=1&Category_Code=1H-Parts-Movt-IntParts-ETA-07&Product_Code=ETA2894-8510-H1

And a tech sheet with the correct partnumbers for everything except the chronograph module.
 

2894-2_Tech_Com.pdf

  • Like 1
Link to comment
Share on other sites

Thanks everyone for the great input.

I have now been able to disassemble the Chrono module, remove the broken item and after about twenty attempts learning a little more every time, put the module back together and it works!!

So if I can’t get a new part the next question is, is there a standard repair procedure for repairing a broken shaft/spindle in a part like this (please see picture). I am a experienced engineer and have access to all types of machine tools thanks to my job. But before I start trying to reinvent the wheel I wondered if there is a proven method.

Thanks again for all the help.

0f16c1a9ec10c2aee81fe2a386d6351e.jpg





Sent from my iPhone using Tapatalk

Link to comment
Share on other sites

If I understand right it's a snapped pivot, an experienced watchmaker would cut a new one on a watch maker's lathe and install it with a staking tool.

A general machine shop wouldn't be able to make a part that small. 

FYI it's normal with the Swiss watch industry that one can't easily understand who does what. It's a thick web of contract work, patents and agreements made to their exclusive benefit. It has been like that since more than 200 years. 

Link to comment
Share on other sites

With these DD modules you need to dismantle with the chrono in the 'running' position to avoid parts flying off.

But you've probably figured that out already! I serviced mine when I had one .. more to see how it was constructed but after getting it back together I swore I'd never service (or buy) another.

Anilv

Link to comment
Share on other sites

If I understand right it's a snapped pivot, an experienced watchmaker would cut a new one on a watch maker's lathe and install it with a staking tool.
A general machine shop wouldn't be able to make a part that small. 
FYI it's normal with the Swiss watch industry that one can't easily understand who does what. It's a thick web of contract work, patents and agreements made to their exclusive benefit. It has been like that since more than 200 years. 


Many thanks that’s what I thought would be the method.

I work for a very large Japanese cutting tool manufacturer and we produce tools down to 0.1mm. Because of this I also have customers who have equipment to work this small so the size of the repair isn’t an issue. I may even manufacture a new part complete if I can’t simply purchase a new one.

Again many thanks again for the information.


Sent from my iPhone using Tapatalk
Link to comment
Share on other sites

2 minutes ago, Specializedjim said:

I work for a very large Japanese cutting tool manufacturer and we produce tools down to 0.1mm. Because of this I also have customers who have equipment to work this small so the size of the repair isn’t an issue. I may even manufacture a new part complete if I can’t simply purchase a new one.

 

You also have to measure the jewel hole to a precision of at least 0.01mm for the new pivot. It could also be made as an extension fitted on the existing body.

  • Like 1
Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • I think we are about there, if there were still lots out there then the cost of a watch from 5 years ago would be around the same as it is now (allowing for inflation). Given that the price has gone up several times over we can only assume that supply cannot keep up with demand so we must be at or past peak supply, especially if the trend continues. I see even places like Australia, Ukraine and even South America are selling watches on eBay, picking over their stocks, mixed in with fakes and Frankenwatches etc.
    • I understand the demand bit, the generation below me 30ish are too technology engrossed to own a mechanical watch and they just dont like old stuff. I also consider myself at the getting on age of 57 to be a rare find of someone that likes old stuff, i did buy an almost 100 year old book yesterday titled " The New Modern Home " printed 1929.  Cost me a quid. What i was trying to work out is if we have reached a volume peak of watches being discovered hidden in the back of drawers.  Those watches that were hung onto until they entered the hands of the non sentimental generation. 
    • Even for myself who only started getting into watch repair/servicing during COVID I have seen a huge jump in watch prices - we have a 404 channel on this forum. When I started you could relatively easily find a watch on eBay to restore and put onto the channel, however this is now almost impossible and the only feasible solution is to buy a job lot with an average price <4.04. Even watches sold for parts/spares are 3 or four times the price of only a few years ago. Why - Either Demand must have increased in order to push up the price, or supply is reduced. I think it is a little of both, I think that most watches in the UK/US may have been picked over, which agrees with most of what @Neverenoughwatches says so supply of all kinds of vintage watches, including tat is dwindling. As a double whammy I think that more people are wanting watches, either to work on, or as a way to differentiate themselves from the Apple Watch and FitBit crowd. The upshot is that half decent watches that require restoration are now $500 instead of $100 and cheaper watches (Seiko 5 etc) are now $50 instead of $10, and even Mumbai Specials and garbage are now pushing $50 each. When - how long will this last, I think that most of the people who are returning to mechanical watches are those that have previously experienced life without them and want to return to something with a bit of personality that doesn't buzz every 10 seconds on your wrist and tell you how many steps you have done today. i.e. the 30-40+ generation. My son who is 17 has several mechanical watches but only wears one on a special occasion and is obviously only aware of them at all in part due to my hobby. I asked him the other day how many of his friends wear a watch and he told me that some use a smart watch but most just use their phones. So as I see it, demand will start to fall once the sub-thirty crowd start becoming the majority and/or the older amongst us stop buying watches and switch our attention to mobility scooters and trying to remember our bank password. Price - I think this is here to stay, even if demand does start to drop as the older generation becomes to decrepit and stops buying and the younger generation isn't interested in buying, supply will become progressively less as time goes on as more vintage watches become lost or broken beyond repair. I think the prices will plateau at some point as an equilibrium is reached as reduced demand is balanced with reduced supply, i.e. less and less people buying less and less watches. Sorry for the long ramble!
    • Hi. Use a PVA based glue, gorilla glue it dries transparent then do as advised by Old Hippy, smoothe down using very fine  0000 wire wool and either French polish or beeswax for a finish.
    • Hello and welcome to the forum.    Enjoy
×
×
  • Create New...