Jump to content

A Sicura Automatic Jump Hour Walkthrough


Recommended Posts

Boring days passed......

When the Sicura watch and the donor watch arrived, they look like junk.

Yes, I bought a watch with only a mainplate and a rotor and jump hour parts!

20200309_181512.thumb.jpg.c3edfaa033657b1ae86258ff482ecf1a.jpg

20200211_091600.thumb.jpg.934963f2edab47a7ef32de02c169a895.jpg

So I can use my Whitney watch that have been in the drawer for few weeks...... It costs me few dollars.

The Sicura shows a BFG 158 31/7 caliber and the Whitney is 158...... They shares the same base movement. Therefore it is possible to combine two calibers into a single jump hour, though it seems strange.

20200309_124404.thumb.jpg.1e00cb606a7c742abad971a17b23abac.jpg20200309_153724.thumb.jpg.9f071647846267dc139e936bb55b5ca8.jpg

After servicing, it works like a charm until.......

the jump hour is installed.

Watch stopped?

Link to comment
Share on other sites

It is pretty hard to set the time.

It must be something wrong with the module.

And I noticed that teeth of the date ring is almost missing!

20200305_194602.thumb.jpg.cc8ddb8fb3ad0a60044c6fa742008aeb.jpg

And the date corrector and yoke......

I browsed the intercharge list on JulesBorel. These also can be found from BFG 582.

But both are rare calibers in Chinese market......

I am searching Internet......

Screenshot_20200309-184306_7788.thumb.jpg.3241fbbd42c90e51ff53f521785a990c.jpg

Screenshot_20200308-094855_7788.thumb.jpg.101efc8e59dcc9985b714a397fe3b6d6.jpg

A day-date BFG 628!

From the technical document on Cousins, parts I need (2566, 2566/1, 2557/1) look like the same.

1375240999_Screenshot_20200309-184531_WPSOffice.thumb.jpg.34da8dd0ffddb7b205dacceb2cf29e39.jpg

So I bought this immediately and I am waiting for 4 days delivery......

Continued

  • Like 2
  • Thanks 1
Link to comment
Share on other sites

  • 3 weeks later...


  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Welcome my friend. 
    • Been there. Worn that Tshirt.  'ping'. Hands and knees. Nothing. Nada. 20 minutes? Ha! I found it 7 month later. How? Well, after advice from a member, I invested in a £4 UV light torch.  Hands and knees looking for a 'ping' from a Sekonda, found them both within 30 seconds. UV makes the jewel shine. easy peasy. Could have taken longer. Just lucky on the location of the search. Hope this helps.
    • Thanks Dell. I thought about silver soldering. Have never done it but would like to give it a go. Do you think to put flux on the butted joint then run the solder in or to maybe brace it with a piece of scrap spring steel?
    • Never and others. Yes, like you I do spend a fair amount of time reading the contents of this forum. I find it better that any other. Clear, lucid, no Prima Donas, and most of all an easy access without adverts. All thanks to Mark. God bless you mate. You give so much to many of us. What if? No Mark? Hypothetically. A forum. I did run a forum for a few years. Really enjoyed it, but became so engrossed that it did affect my health. I gave to to others to run. Not been back. It was very successful and rivalled a number of large paying sites. No adverts, no others but me. I did ask and listen to members comments and it worked well.    Costs Having a domain name, £10 annually.  Register the site with a forum company, free. Build the site using the forum company guide lines, free. It looked and ran almost the same a Mark's. All the same facilities. The cost was only £5 per month, but counted visits (views). If I recall, it was that price for 5,000 views. Each extra 5,000 views increased the price by £2 per month. Success was my own personal undoing. From £5 per month initially, it rose to £60 a month and looked like increasing. This was 10 years ago. I could not afford that, and asked it anyone would like to take over and someone did. I would assume that this is the price that Mark is funding for us all. His return is our continued comments on the internet about his course, and the fact that many of the big names on YouTube mention him as their Tutor. Those of us who have done, and are still using, his course, benefit. In comparison to other courses, I can't believe how cheap it is, and the value is exceptional. It is the structure that gives the value. Long may Mark reign. Ross  
    • Hi all, total newbie to watchmaking and I've had a bit of a mishap. Just completing level 2 and was doing ok, but I was just on the last part of the reassembly of my ST3620 when the balance end stone shot across the room, just as I was trying to see if I had put the correct amount of oil between it and the balance end, aarrrgh! Been on my hands and knees combing the carpet for 20mins looking for it but to no avail. Does anybody know where I can get a replacement from and what to look for please?? Thanks.
×
×
  • Create New...