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Posted

Having lost a dial side hole jewel for a Novodiac-fitted ETA 2824-2, I have been trying to source a new one.

So far, I managed to get complete shock units for both upper and lower shock assemblies, but they’re regular Incablocs not Novodiac. I have trawled the Incabloc catalog, but cannot figure out if the hole jewels are interchangeable.

Any ideas?

 

Thanks,

Charlie

Posted

I have already looked over the Otto Frei, Jules Borel, Cousins websites.

Otto Frei show many options for the Incabloc, but only scant information on the Novodiac shock-system parts. The page on Jules Borel lists complete upper and lower shock systems, but only for the Incabloc.

I cannot even find details on spare parts for the Novodiac on the Incabloc website!

Maybe my best option is simply to switch-out the entire shock on the dial side from Novodiac to regular Incabloc. Does anyone know if the entire shock assemblies are interchangeable?

 

Thanks,

Charlie

Posted
1 hour ago, CharlieButterworth said:

if the entire shock assemblies are interchangeable

if we are unable to give you a suitable answer how do you think we're going to give you an answer on swapping the entire system?

if you look in the technical communication for the watch does it tell you with the part number ?

the problem is were only as good as the reference material. For instance I snipped out an image from bestfit online maybe that could be of help. You'll need to go and find the physical bestfit book but they're out there is a PDF you can actually look up the individual parts and see what they referred to.

eta 2824-2 balance protection system bestfit.JPG

Posted

I would check with another 28xx series fitted with inca and see if the hole jewel are the same. I believe its only the mounting that is different between novodiac and Inca.

Good luck

Anilv

Posted

Read somewhere about inca that it comes in single or double cone, double cone provides more freedom and can absorbe heavier shocks. Novodiac is generally inferior to incabloc.

Chronograde or top grade movements generally use incabloc, elabore and standard grades sometimes go Novodiac.

I guess good grade ones bether polish pivots , but I have no idea if the geomerty of pivot end differ any for different shock absoption systems. 

Personally I like kif elastor springs.

Posted
41 minutes ago, Nucejoe said:

Novodiac is generally inferior to incabloc.

Chronograde or top grade movements generally use incabloc, elabore and standard grades sometimes go Novodiac.

to get an answer for something like this you just need to look at the manufacturing information sheet for this watch. then you can get confused?

in the 2016 version  the standard and Elaboré grades are Nivachoc with the top and chronometer grade Nivachoc.

Then for the 2010 version of the lower two grades are Etachocs which according to the third link below is equivalent to Novodiac. The upper two grades are listed as Incabloc.

Then the first two links that should be the complete lower setting and it appears that be in the picture at least to be Incabloc. According to the specifications it's supposed to press in as a wild guess probably all of various settings for the lower unit presses in that way they could use the same plate.

then I snipped out an image from the 2004 technical guide the later technical guides give you the long number because they changed how they did the numbering system this gives the old numbering. Which does agree with the best fit system and the first two links but doesn't say which type a system that. Other then it is the lower unit that you would conceivably need. I think I just about stuck buying a innocence shoving it in seeing what happens.

http://www.julesborel.com/s.nl/it.A/id.25002/.f

https://www.startimesupply.com/merchant2/merchant.mvc?Screen=PROD&Product_code=ETA2824-3025

https://www.phfactor.net/swr/Shock-protection_1638459.html

 

eta lower.JPG

eta 5.JPG

eta 4.JPG

eta 3.JPG

eta 2.JPG

eta 1.JPG

Posted

Thanks for the information posted above. The different parts numbers are certainly confusing.

 

In terms of technical information, this is what I have found:

1. Spare parts list directly from Incabloc http://www.incabloc.ch/images/cat/eta.gif BUT.... this is only for Incabloc not Novodiac. Funny that they don't actually list those.

2. https://calibercorner.com/novodiac/  BUT no indication on how to find which of the sizes fits which calibre.

3. https://www.cousinsuk.com/document/gotofiles/8938 - this proved incredibly useful and allowed me to order the correct parts from Cousins. Unfortunately, when I search for the part numbers listed in this PDF on Otto Frei, nothing shows up, neither do they on Jules Borel.

I have never heard of a "best fit" catalog/book until now. I will certainly look into that.

Thanks for all this information. I had no idea that it could all get so convoluted and complex.

 

 

Charlie

Posted
3 hours ago, CharlieButterworth said:

I have never heard of a "best fit" catalog/book


the bestfit book is not unique there are other companies that had similar things at least in the physical book form. So the book evolved until finally was a two-volume edition which is exceedingly hard to find. You can get the PDF at the link below. The book is well worth it for anyone in watch repair because there's so much information in both books. Then there's the online version unfortunately it does not have the pictures of the book.

https://mccawcompany.com/product/bestfit-encyclopedia-books-111-111a-digital-download-pdf-version/

https://mccawcompany.com/product/bestfit-material-matsys-for-life/

then while you're at the above website if you look under the services category in other words what services do they provide?you notice what the second item is parts identification. This is because material houses have way way more reference material than we do. A lot of the watch companies never gave the watchmaker everything only the material houses typically would have all the reference material. This is where it's always really nice to cultivate relationships with your material house unfortunately most people don't have a physical material house to do this with. But we have online versions that will provide the same service providing you give them enough information.

 

Posted
11 minutes ago, JohnR725 said:

You can get the PDF at the link below.

Or check our featured post below.

 

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