Jump to content

Seiko 7s26 calendar misaligned

Bplus73
 Share

Recommended Posts

Bplus73 New Member

Bplus73

Posted
Posted

Hi I encountered an issue that my seiko 7s26 calendar 'day' not aligned properly after 24 hours. Date no issue, quickset also no issue. I have replaced the date driving wheel, the issue not solved. Please help. 

17273264299554015877733037837447.jpg

Nucejoe Distinguished Member

Nucejoe

Posted
Posted (edited)

 I gather day disk isn't dead stuck,  WILL CHANGE but consistantly  LAGS behind by a few hours.

Day disk misalignment  is in genetic code of Seiko 5.

Its not worth buying parts for, just advance the day disk on gear attached to the back of it to compensate for the lag.

Good luck.

 

Edited by Nucejoe
Typo
AndyGSi Distinguished Member

AndyGSi

Posted
Posted
41 minutes ago, Nucejoe said:

just advance the day disk on gear attached to the back of it to compensate for the lag.

The star (gear) on the rear of the day disk should be fixed and not moveable.

If it needs to be realigned then it also needs to be secured back in place.

Nucejoe Distinguished Member

Nucejoe

Posted
Posted (edited)
2 hours ago, AndyGSi said:

If it needs to be realigned then it also needs to be secured back in place.

Yes. 

Measure the lag time.

Seperate disc and star.

Aligned and glue with epoxy five.

Install back on , your likely to still have minor misalignment. 

Redo all above if you like to improve for better alignment. 

Once happy ,add superglue. 

Superglue welds chemically and after couple of month the bond becomes irreversible. You then have a ruined but realigned  day disk & stars .

Mzinski tried, even thanked me.  Hehe

https://www.watchrepairtalk.com/topic/16038-rolex-1215-date-disc-help/

 

 

Edited by Nucejoe
Typo
Bplus73 New Member

Bplus73

Posted
  • Author
Posted

Hi thanks for the replies,

if the problem is the alignment of star behind the day disc, why the quickset of day no issue?

Initially I suspected date driving wheel which will push date ring and day disc after 24 hours, but date no issue. But day disc cannot aligned. 

 

AndyGSi Distinguished Member

AndyGSi

Posted
Posted

I hadn't seen about the quickset, so back to my original question.

What version of the 7S26 and what wheel have you replaced (Part No.)

Also how does Day-Date Correction Wheel look?

Nucejoe Distinguished Member

Nucejoe

Posted
Posted (edited)
1 hour ago, Bplus73 said:

If the problem is the alignment of star behind the day disc, why the quickset of day no issue?

Who said the problem is the"star gear misalignment" ?

One wouldn't know unless its examined.

Just readjust the day disc for the lag. Otherwise, you are likely to end up spending more than watch's worth in it.

I know you gain no experience  in way of fault finding?

This cheaply day mech IS  the fault.

A slow-mo vid of the day mech when trying to change including  final jump helps.

 

Edited by Nucejoe
Typo
AndyGSi Distinguished Member

AndyGSi

Posted
Posted
16 minutes ago, Nucejoe said:

Who said the problem is the"star gear misalignment" ?

One wouldn't know unless its examined.

Just readjust the day disc for the lag. Otherwise, you are likely to end up spending more than watch's worth in it.

I know you gain no experience  in way of fault finding?

This cheaply day mech IS  the fault.

A slow-mo vid of the day mech when trying to change including  final jump helps.

 

A common fault with the 7S26 is the star on the rear of the day disc coming loose and creating the misalignment.

This appears not to be the OPs problem as the quickset works OK.

Bplus73 New Member

Bplus73

Posted
  • Author
Posted
On 9/30/2024 at 12:27 PM, caseback said:

Just to clarify: if you say "quickset is not an issue", do you mean that if you use the quickset the alignment of the day disk ends up ok?

Yes, both Day and Date aligned properly with quickset 

AndyGSi Distinguished Member

AndyGSi

Posted
Posted (edited)

What happens when you manually advance the day by passing midnight?

How do the white star wheels in your photo appear to operate during this transition?

Edit

Can you post a photo of the date dial guard.

Edited by AndyGSi

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

    • JohnR725
      A lathe with indexing that won't break the bank?

      By JohnR725 · Posted

      One of the problems we would have with a watchmaker's lathe is they were made over considerable span of time and manufacturing in the early days probably wasn't as good as it was today. Then if you look at the older catalogs typically it was just the head a few collets and something to rest graver on. So basically a basic lathe with over time things acquired but acquired things may or may not fit. Order today you purchase a used lathe that all kinds of nifty bits and pieces from a seller that acquired from? This would come back to that the basic watchmaker's lathe was used for basic watchmaking like turning things with a hand graver. Then limited indexing is fine because you can make things like stems Which don't need a whole bunch indexing   In the link above the word vector is mentioned and at the link below you can purchase one. Then of course you're going to need the motor that's a little bit extra for the price. https://www.hswalsh.com/product/lathe-vector-watchmakers-48-collets-hl11. That you're going to need some bonus parts like these found this picture online show the classic way of classic gear cutting.   The lathe could have a much bigger indexing disk but it has to be mounted close to the edge. Otherwise you're going to have a whole bunch of smaller disks like this which I think has notches rather than holes. Then as wonderful as these pictures look actually cutting a gear with this is not entirely fun. Look at all is belts all pulling on things and this is a watchmaker's lathe lightweight with lots of bits and pieces attached. It would make more sense if you actually cut a gear with something like this and it tends to be it's not really the best way to do it looks nice on paper but it is not the best way to go. Reality for cutting watch parts would be a bigger machine is much better. Than getting rid of all those belts and pulleys also good. Here is an interesting channel I would've liked of found a different video but this was nice and short if you look at his video as he uses a stepping motor and worm gear assembly for the indexing plate. In this particular video it gets attached to the lathe at about one minute and seven seconds and it looks like it's hiding looks like he has a Sherline. I do know he's had other stuff you'll just have to go through his videos to find it. Then at about one minute and 22 seconds you find out if you set up things appropriately. It's always bad we end up with half a tooth at the very end. Then you will note big lathe yes he's getting a big gear but you could easily cut a watch gear with the setup. And it definitely way more stable than a watchmaker's lathe.         Oh here's a company they been in business since 1911 http://www.fwderbyshireinc.com/  
    • RichardHarris123
      Hello from the Philadelphia area

      By RichardHarris123 · Posted

      Hello and welcome from Leeds, England. 
    • Rocco
      Hello from the Philadelphia area

      By Rocco · Posted

      Hello, looking forward to participating on the forum here! I will mostly be listening and asking questions since I am an amateur hobbyist. I have most of the beginner hand tools and a Timegrapher. The extent of my tinkering consists of a successful Seiko 7S26 to NH36 movement swap inside an all original 1997 SKX007, along with a bunch of battery changes for friends and family. I have yet to tackle full disassembly and cleaning. Right now, I don't really have the budget or time to invest in a cleaning setup (even manual cleaning), but hopefully soon! I joined because I recently purchased a mechanical Timex Camper from 1994, and my searches for information regarding servicing and swapping out these Timex mechanical movements consistently led me to Watch Repair Talk. There is also a wealth of knowledge here about dial design, another area of interest for me. My other hobbies includes leather working (mostly small pieces, shoes eventually), crochet, sewing (would love to make clothing), design (especially type design), home espresso, cocktails, and tennis. I want to buy a film camera, but I don't need yet another expensive hobby involving last-century technology. Yes, I have ADHD.
    • luiazazrambo
      WWW Eterna sucked me in.

      By luiazazrambo · Posted

      HWGIKE#60 Accurist ETA 2390 Swiss lever, 21 jewels, full service A slim Accurist with a nice movement, eventless service, nice performance.  
    • RichardHarris123
      Hello from Nashville

      By RichardHarris123 · Posted

      Hello and welcome from Leeds, England  
×
×
  • Create New...