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Thread: Repivoting the Auto Click on Heuer Cal.12

  1. #1
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    Repivoting the Auto Click on Heuer Cal.12

    The auto click device on Heuer Calibre 12 allows the mainspring, through a train of gears, to be kept from unwinding as the rotor turns to wind it. This is independent of the click on the ratchet wheel which takes the full pressure of the mainspring strength.
    The auto click pivots on the calibre 12 automatic winding system are too thin in my opinion and frequently break. They are only 0.09mm. I make the new pivots 0.14mm. Much better. Luckily the pivots go into brass settings rather than jewels so the holes can easily be broached open slightly larger.
    A new click costs over £150.00 now from Switzerland, so it is cheaper to repivot the existing one. It is a very difficult piece to hold because of the attached click spring wire, but placing the item in warmed shellac resin eases the difficulty.

    Where it fits. The micro rotor sits to the left.

    I'm glad that's done !
    Now the watch needs a complete service.



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    Last edited by Webwatchmaker; 29th August 2020 at 20:27.

  2. #2
    Master MartynJC (UK)'s Avatar
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    Many thanks for posting this. I do look forward to the next instalment!

  3. #3
    Grand Master magirus's Avatar
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    Quote Originally Posted by MartynJC (UK) View Post
    Many thanks for posting this. I do look forward to the next instalment!
    +1. Also, what do you use to measure such small tolerances?

  4. #4
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    Quote Originally Posted by magirus View Post
    +1. Also, what do you use to measure such small tolerances?
    I use a watch jewel held in a stud screw holder. I know the internal hole diameter of the jewel and place the required hole size through the pivot.
    Simple and accurate.

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  5. #5
    Grand Master Neil.C's Avatar
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    Love this stuff!
    Cheers,
    Neil.

    My Speedmaster website:

    http://www.freewebs.com/neil271052

  6. #6
    I helped build a Playmobile Space Shuttle today. A few tricky parts but I managed. Brendan, our skill set is very similar .

  7. #7
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    Quote Originally Posted by MartynJC (UK) View Post
    Many thanks for posting this. I do look forward to the next instalment!
    Ready for reassembly. Not sure I will have time for further updates.


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  8. #8
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    Quote Originally Posted by Mr Tetley View Post
    I helped build a Playmobile Space Shuttle today. A few tricky parts but I managed. Brendan, our skill set is very similar .
    Your comment comes at the perfect time. Got this tape recorder at the car boots this morning and after recording on it, I'm getting alien signals on the tape. Any advice from the shuttle crew ??



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  9. #9
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    The broken pivot:
    Last edited by Webwatchmaker; 30th August 2020 at 17:12.

  10. #10

    Repivoting the Auto Click on Heuer Cal.12

    Quote Originally Posted by Webwatchmaker View Post
    Your comment comes at the perfect time. Got this tape recorder at the car boots this morning and after recording on it, I'm getting alien signals on the tape. Any advice from the shuttle crew ??



    Sent from my SM-A105FN using TZ-UK mobile app
    They have found a ‘1969 Moonwatch and are looking for a quote to service it. Apparently the other two quotes they’ve had are astronomical.

  11. #11
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    Quote Originally Posted by Mr Tetley View Post
    They have found a ‘1969 Moonwatch and are looking for a quote to service it. Apparently the other two quotes they’ve had are astronomical.
    ....On my way to Kennedy Space Centre

    Sent from my SM-A105FN using TZ-UK mobile app

  12. #12
    Quote Originally Posted by Mr Tetley View Post
    They have found a ‘1969 Moonwatch and are looking for a quote to service it. Apparently the other two quotes they’ve had are astronomical.
    Costmonaut to get mine serviced.


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  13. #13
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    Oh dear what have I started ?
    Out come all the astronuts...!
    Quote Originally Posted by BillyCasper View Post
    Costmonaut to get mine serviced.


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    Sent from my SM-A105FN using TZ-UK mobile app

  14. #14
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    Little update. Main train reassembled. Running ok. Micro rotor visible. Chronograph and calendar plates to be fitted tomorrow morning.


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  15. #15
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    Chronograph plate fitted.


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  16. #16
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    Finished and returned to Germany this morning !


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