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Rotary Skeleton Movement Disassembling

Vladimir

By Vladimir
in Watch Repairs Help & Advice

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Vladimir Member

Vladimir

Posted
Posted

Hi Guys, 

Hope this finds all well, i have started disassembling a rotary watch with a skeleton movement and a tiny part fell out of the movement which i was not in time to take a picture. If anyone has ever worked on similar movement and know where it belongs i will appreciate your help.

Pictures attached.

Thank you in advance. 

Vladimir.

 

IMG_20190917_204048.jpg

IMG_20190917_204256.jpg

IMG_20190917_204324.jpg

AndyHull Distinguished Member

AndyHull

Posted
Posted (edited)

That looks suspiciously  like a PTS Hangzhou, one of the most common Chinese skeletonized movements.

image.png.4c4369d4c4a07d211c044bab4852ef63.png

Something like the one above. You may find some info here ->

http://www.ptsresources.com/watch_handwinding_01.htm

and here ->

https://www.rwg.bz/board/index.php?/topic/808-chinese-watch-movement-information/

If you can identify the exact caliber, then you may be able to track down a datasheet, or perhaps a tear down video.

They are in my opinion, reasonable quality, so worth repairing.

Edited by AndyHull
  • Like 1
AndyHull Distinguished Member

AndyHull

Posted
Posted

The "small part" looks most likely to be from the keyless work, and looks to have been held in place by a screw.
Is the movement an automatic or manual wind?

  • Like 1
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi  Once again Andy is on the mark, The chinese produce quite a few skeleton movements, which one this is, we really need the calibre to be able to identify the bit. I doe's look as though it was at some time screwed down, the screw may yet be lodged in the works some where.

  • Like 1
watchweasol Distinguished Member

watchweasol

Posted
Posted

Hi further research turns up rotary using the Hangzhou HZ2189 movement but also they used seagull movements of which there are a lot of both makes on the market. Will continue to look

  • Like 1
Vladimir Member

Vladimir

Posted
  • Author
Posted
4 hours ago, AndyHull said:

The "small part" looks most likely to be from the keyless work, and looks to have been held in place by a screw.
Is the movement an automatic or manual wind?

Hi AndyHull,

It is an automatic movement.

Thanks.

Vladimir.

Vladimir Member

Vladimir

Posted
  • Author
Posted
56 minutes ago, watchweasol said:

Hi further research turns up rotary using the Hangzhou HZ2189 movement but also they used seagull movements of which there are a lot of both makes on the market. Will continue to look

Hi watchweasol,

Thanks a lot for you dedication,  it seems that is the right movement reference. I could establish that the same movement is used in some Shurling Watches (Alpine model).

thank you all for your patience.

Regards,

Vladimir Member

Vladimir

Posted
  • Author
Posted
5 hours ago, AndyHull said:

The "small part" looks most likely to be from the keyless work, and looks to have been held in place by a screw.
Is the movement an automatic or manual wind?

 Hi AndyHull,

it is automatic...

thanks...

Regards,

AndyHull Distinguished Member

AndyHull

Posted
Posted (edited)

That part number -  CH2189W - seems to turn up quite a lot of info too. 

It is not uncommon for the same, or similar movements to be listed with different part numbers by different suppliers, and for the same or similar Chinese movements to be produced by more than one manufacturer.

Edited by AndyHull
aac58 WRT Addict

aac58

Posted
Posted (edited)

Could it be a (broken) click? It's similar to the Seiko click designs in some movements like 6119, and now that AndyHull has shown the movement there are quite a few parts that are also like the Seiko, for example the second reduction wheel and the pawl levers on the automatic mechanism. And I can see the click is also Seiko style.

EDIT: This is a Seiko 6119 click

click.jpg

Edited by aac58
CaptCalvin WRT Addict

CaptCalvin

Posted
Posted

I'm pretty sure it's a spring for a wig-wag style reversing wheel. Is this a unidirectional automatic winding movement? These movements can come with a variety of automatic mechanisms.

aac58 WRT Addict

aac58

Posted
Posted

Those pawl levers (aka Magic Levers) translates the movement of the rotor in any direction to an anticlockwise movement on the second reduction wheel (the wheel with the left-handed screw) Then it is transfered to the rachet wheel and then to the main spring.

The click is between the rachet wheel (golden coloured wheel in the AndyHull photo) and the barrel below it, and I think this click could be the part you found.

But, if it is the click, where is the screw that was holding it in place? And the rest of the click?

With the 2nd reduction wheel removed, you can test if there is a working click by trying to wind the movement via the rachet wheel screw and see it the MS holds the tension.

Vladimir Member

Vladimir

Posted
  • Author
Posted
1 hour ago, aac58 said:

Those pawl levers (aka Magic Levers) translates the movement of the rotor in any direction to an anticlockwise movement on the second reduction wheel (the wheel with the left-handed screw) Then it is transfered to the rachet wheel and then to the main spring.

The click is between the rachet wheel (golden coloured wheel in the AndyHull photo) and the barrel below it, and I think this click could be the part you found.

 But, if it is the click, where is the screw that was holding it in place? And the rest of the click?

With the 2nd reduction wheel removed, you can test if there is a working click by trying to wind the movement via the rachet wheel screw and see it the MS holds the tension.

Hi aac58,

thank you so much for the detailed explanation... it helped a lot locating where it goes..

Regards,

Vladimir Member

Vladimir

Posted
  • Author
Posted

Hi All,

I am very overwhelmed with all the replies that was provided, thanks a lot for everybody that had an input on this, really appreciated it.

Regards,

  • Thanks 1
  • 3 years later...
Waggy Distinguished Member

Waggy

Posted
Posted

I have the same movement with the exact same problem.... found this little part appear on my desk top with no idea where it came from. Now I know..... but any ideas what it is there for? Iput the watch back together and it seemed to work fine, but after an hour or two it kept stopping and would re-start if I gave it a little shake... only so stop again in a few hours more. Could leaving this part out be related to the stopping issue. I'll put the part back now I know where it goes, but just wondered if the stopping is related to this part?

AndyHull Distinguished Member

AndyHull

Posted
Posted

Given that the part was originally held in with a small screw, it is possible that the small screw is somewhere in the works, causing issues. Did you do a full strip and rebuild? What is the amplitude like? It sounds more like dirt on one of the teeth, play in something, or a worn barrel bearing or something similar rather than that mystery part, that is causing your issue.

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