Jump to content

Cylindrical Escapement


Recommended Posts

Hi All

I have recently serviced a pendant watch with a cylindrical balance in it. The lower balance staff pivot is broken and I need to fit a new one. Is there any helpful detail on how to choose the right staff and replace it. I  have not seen one of these before so any help is most appreciated.

Thanks

 

Link to comment
Share on other sites

Recently discussed below. Further to that, there is a chapter, which includes the measurements needed (better taken with a micrometer) for a replacement, in "Modern methods in horology", which being a 1904 book is free from copyright and can be downloaded from Internet.

Also, the my mentor Master is donating his rare stock of these to the community, meaning that anyone in the ned can receive one best matching completer cylinder for postage.

 

Link to comment
Share on other sites

Hi all thank you for the detail. Didn't realise that the staff had removable tampons or the full make up of the balance till I saw the detail posted. I am going to enjoy fixing this one.

Nucejoe many thanks for the offer. If I have no luck getting the tampons I'll certainly take you up on your kind offer.

Cheers bud Steve

 

Link to comment
Share on other sites



  • Recently Browsing

    • No registered users viewing this page.
  • Topics

  • Posts

    • Oh nice. I have a similar wedge style stump for my staking tool, so I'll give that a shot. Thanks!
    • Thank you all for the replies!  Very informative! True enough, the Gamsol took some time to evaporate and does leave a residue. So not all naphtha are created equal!  Need to find alternatives then. i was able to try Hexane recommended by Alex and it seems great.  I wonder what the cons are?
    • Yeah, I saw that in the tech sheet but I don't see how it can be adequately cleaned with the friction pinion still in place. I've accidentally pulled the arbor right out of the wheel once when I used a presto tool to try and remove it. Mark shows how he does it with the Platax tool. Those are a little too pricey for me so I got one of these from Aliexpress and I just push down on the arbor with the end of my brass tweezers. That usually gets it most of the way out and then I just grab the wheel with one hand the and the friction pinion with the other and gently rotate them until it pops off. Probably not the best way but it's seemed to work for me so far.    
    • Thanks, Jon Sounds like a plan. Obviously I'll have the face on so do you think gripping with the holder will create any problems, but I will check in the morning to see how feasible it is but I assume it only needs to be lightly held. As for holding the movement instead of the holder won't be possible in this scenario as one hand will be puling on the stem while the other pushes the spring down. That was my initial concern is how the hell can I do this with only one pair of hands. All the other times I've had to remove the stem hasn't been a problem, apart from the force required to release the stem from the setting lever, but now I need to fit the face and hands its sent me into panic mode. If it had the screw type release things would be a lot simpler but that's life 😀   Another thing I will need to consider is once the dial and hands are fitted and the movement is sitting in the case I will need to turn it over to put the case screws in. I saw a vid on Wristwatch revival where he lightly fitted the crystal and bezel so he could turn it over, is this the only option or is there another method?      
    • Hi Jon, do You think that relation spring torque - amplitude is linear? I would rather guess that the amplitude should be proportional to the square of the torque. I had once idea to check it, but still haven't.
×
×
  • Create New...