Goal: $300, Received: $125.00 (42%) Contribute Now
Donate whatever you can or Join the 14,000 other NAWCC members for only $80 (plus $10 for hard copy publications). Check it out here.



Results 1 to 7 of 7
  1. #1

    Default Pocket Watch runs fast upright only

    A very high quality Audemars Piguet minute repeater keeps very good time dial up and dial down, but gains 30 minutes per day in vertical stem up position. The amplitude is very good and the balance runs true in the round and the flat. Would appreciate any thoughts on possible causes to start checking and options for repair.

  2. #2
    Registered user.
    Join Date
    Apr 2013
    Location
    Linköping, Sweden
    Posts
    1,771
    Blog Entries
    1

    Default Re: Pocket Watch runs fast upright only (By: dshumans)

    How does pendant up compare to the other vertical positions?

  3. #3
    Registered User gmorse's Avatar
    Join Date
    Jan 2011
    Location
    Breamore, Hampshire, UK
    Posts
    6,761
    Blog Entries
    1

    Default Re: Pocket Watch runs fast upright only (By: dshumans)

    Hi Doug,

    Are the amplitude and the gaining rate the same in all four vertical positions, and are both horizontal positions also the same?

    Regards,

    Graham

    "Ut tensio, sic vis" - Robert Hooke

  4. #4

    Default Re: Pocket Watch runs fast upright only (By: dshumans)

    If it runs good in dial positions, and things go out the window in pendant positions, the first thing I would look at is poise. Next in line for me would be the curb pins.

  5. #5

    Default Re: Pocket Watch runs fast upright only (By: 179)

    I'd pull the balance wheel out and check it for poise first.

  6. #6
    Registered User Paul_S's Avatar
    Join Date
    Mar 2015
    Location
    North Carolina
    Posts
    137

    Default Re: Pocket Watch runs fast upright only (By: NC Plumber)

    Timing machine readings would tell you a lot. 30 minutes a day is huge, so I'd suspect that something is rubbing. Any pics of timing traces you could attach?

    To hazard a wild guess, in that position gravity is probably pulling the balance staff closer to the pallet, so the jewel it is engaging improperly in the fork, or the safety pin is rubbing against the roller. The amplitude thus drops, causing a really fast rate.

  7. #7
    Registered user. RJSoftware's Avatar
    Join Date
    Apr 2005
    Location
    Loxahatchee, Florida
    Posts
    7,439

    Default Re: Pocket Watch runs fast upright only (By: Paul_S)

    Check if you hear anything rubbing/knocking.
    The bitter the challenge, the juicy the conquest.
    Conquest -> https://www.youtube.com/watch?v=NGaVUApDVuY

Similar Threads

  1. Replies: 20
    Last Post: 04-26-2010, 02:50 PM
  2. watch running fast - time for service?
    By NateN in forum Wrist Watches
    Replies: 6
    Last Post: 10-17-2005, 03:41 PM
  3. Pocket Watch Running Fast-Gains 2 minutes per Hour?
    By popeye in forum American Pocket Watches
    Replies: 10
    Last Post: 06-21-2005, 12:48 PM
  4. My watch runs fast then slows down
    By Yasuyuki in forum Watch Repair
    Replies: 2
    Last Post: 09-19-2003, 01:24 AM
  5. watch runs fast
    By fffffg in forum American Pocket Watches
    Replies: 2
    Last Post: 12-20-2001, 06:38 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •