SKX009 doesn't "hack" anymore
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  1. #1
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    SKX009 doesn't "hack" anymore

    Hello,

    I took my Seiko SKX009 out of the drawer today and adjusted the time. As always, I :

    - Unscrew the crown and pull the crown to position 1
    - Adjust the day and date to yesterday's day and date
    - Pull the crown to position 2 and cycle the time until the date changes, then set the correct time +1 minute
    - Wait until the seconds hand reaches 0 and turn the crown backwards to that I manually "hack" the seconds hands to stall at 0
    - Turn the crown forward a bit once the seconds are synchronized with another clock so that the seconds hands gets released and going ("unhacking")
    - Push the crown back in and screw it back

    After a while throughout the day, I check my computer clock to see how much my time has drifted and I see I am 3-4 seconds earlier so I decide to synchronize again going to the next minute and waiting at 0 seconds. However, to my surprise turning the crown backwards (position 2) doesn't stall the seconds hand anymore. This is the first time this happens to me in months and months of wearing and adjusting time on this watch.

    What is going on ? What causes this ? Any fix that could be done without bringing it for a full maintenance check ?

    Let me know if a video demonstration would help understand my problem.
    Dec1968 likes this.

  2. #2
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    Re: SKX009 doesn't "hack" anymore

    If the mainspring/power reserve is more than half full, it becomes more difficult to back-hack. If it is completely full, it is damn near impossible.
    funnyperson1, Dec1968 and jtaka1 like this.

  3. #3
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    Re: SKX009 doesn't "hack" anymore

    I didn't know that ! I am relieved. Thanks for the info.

  4. #4
    Member Tickstart's Avatar
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    Re: SKX009 doesn't "hack" anymore

    Mainspring torque too great/cannon pinion friction too low.

  5. #5
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    Re: SKX009 doesn't "hack" anymore

    Quote Originally Posted by Tickstart View Post
    Mainspring torque too great/cannon pinion friction too low.
    Oh that's why. And here I thought it was because there was too much pep in the spring-wangdoodle.
    Camguy likes this.

  6. #6
    Member sticky's Avatar
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    Re: SKX009 doesn't "hack" anymore

    I don't know the technical details but I was under the impression that an SKX grew harder to hack the more it was wound.

  7. #7
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    Re: SKX009 doesn't "hack" anymore

    lol

  8. #8
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    Re: SKX009 doesn't "hack" anymore

    Quote Originally Posted by Mr. James Duffy View Post
    Oh that's why. And here I thought it was because there was too much pep in the spring-wangdoodle.
    lol

  9. #9
    Member Horatius's Avatar
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    Re: SKX009 doesn't "hack" anymore

    You probably knew this, but don't forget to put between the first and second line of your list: "check if the time is between 4 and 8".

  10. #10
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    Re: SKX009 doesn't "hack" anymore

    Quote Originally Posted by Horatius View Post
    You probably knew this, but don't forget to put between the first and second line of your list: "check if the time is between 4 and 8".
    I'm not sure I understand what you mean. I know between 12 and 3 the day change is ongoing from one language to the next (first day change at 12 to "wrong language" and next at 3 to "correct language"). What's the deal if the time is between 4 and 8 ? Is it just a matter of the movement not being optimally aligned for a day/date change ?
    Last edited by Virgul3; 1 Day Ago at 18:48.

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