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Thread: The Accutron Electrostatic

  1. #1
    Grand Master abraxas's Avatar
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    The Accutron Electrostatic



    The Accutron Electrostatic

    The Electrostatic Accutron Concept Movement, Released Ahead Of Accutron's 60th Anniversary
    https://www.hodinkee.com/articles/ci...nt-introducing

  2. #2
    Craftsman
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    Fascinating. Always good to read about new ways of driving a watch.

    Tapatapatapatapatalk

  3. #3
    Master mindforge's Avatar
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    Very cool and I like the look of the turbines whirring away as well as the gliding seconds hand. Would definitely be interested if it's not massive or expensive.

  4. #4
    Ooh yes, I like the look of that an awful lot.

    Any guide on size or price anywhere? Can't find any dimensions or any other details on it.

  5. #5
    Grand Master Dave+63's Avatar
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    I like it; if it’s reasonably sized (and priced) I think I’ll treat myself to one of those. I love the Spaceview hummers but hound them
    A little too small when I had one.

    I’m intrigued by the electrostatic motors too.

  6. #6
    Master Tetlee's Avatar
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    I'm interested in this one, looks great in motion and love the tech.

  7. #7
    Grand Master Foxy100's Avatar
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    That's a cracker. I'd be interested in the price too.
    You can live in your car but you can't drive your house.

  8. #8
    Master Caruso's Avatar
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    Very interesting movement, shame it's not available yet.

  9. #9
    Grand Master abraxas's Avatar
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    The way I see it is that...

    1. The electrostatic motor uses less power than the traditional step-motors. Also, the electrostatic motor runs continuous which is pretty.

    2. The electrostatic motor's job is just to move the hands around.

    3. It reminds me of the Accuquartz where the tuning forks were used as mere motors to drive the hands whilst the real time-keeping was controlled by a quartz.

    BULOVA 224 ACCUQUARTZ 1972
    http://www.crazywatches.pl/bulova-224-accuquartz-1972

    4. "The current produced is stored in a capacitor, and delivered to the larger electrostatic motor."

    I am just concerned about the use of a capacitor which was the bane of the Seiko Kinetic...

    Seiko Kinetic (the capacitor problem)
    http://watchfix.info/Seiko Kinetic/Seiko Kinetic.php

    How a Wimshurst Machine Works (I cannot fully understand it...)
    https://www.youtube.com/watch?v=nA4aCd5qFWs

  10. #10
    Master James_'s Avatar
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    Wasn't the Seiko Kinetic problem fixed quite a long time ago though.

  11. #11
    Grand Master abraxas's Avatar
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    Quote Originally Posted by James_ View Post
    Wasn't the Seiko Kinetic problem fixed quite a long time ago though.
    I believe the solution was to replace the capacitors with rechargeable batteries.

  12. #12
    Quote Originally Posted by abraxas View Post
    4. "The current produced is stored in a capacitor, and delivered to the larger electrostatic motor."

    I am just concerned about the use of a capacitor which was the bane of the Seiko Kinetic...
    Quote Originally Posted by abraxas View Post
    Quote Originally Posted by James_ View Post
    Wasn't the Seiko Kinetic problem fixed quite a long time ago though.
    I believe the solution was to replace the capacitors with rechargeable batteries.
    The electrostatic motor will likely need hundreds of volts to run (at a very, very low current). It's obvious that a high voltage is needed, as they've used a pair of wimhursts to generate it, rather than a more efficient (but lower voltage) electromagnetic generator. Once upon a time I could have looked at the dimensions of that motor and done the maths to work out the voltage needed. Sadly I've long forgotten all that electro-mag theory, the only thing that remains is the memory of how tortuous it was to learn!

    A rechargeable cell stores a maximum of 4.2V (lithium ion). By putting may cells in series you increase the voltage, problem is, you'd need dozens to get the voltage high enough.

    A very small capacitor can be easily built to handle the high voltages needed.

    A cap is the obvious and correct choice.

  13. #13
    Journeyman
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    How will this affect Seiko's springdrive premium pricing positioning I wonder.

  14. #14
    Apprentice
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    Looks just great, we will follow the development!

  15. #15
    Quote Originally Posted by Seagullfan View Post
    How will this affect Seiko's springdrive premium pricing positioning I wonder.
    Not sure why it would impact it at all?

    It's currently positioned as a vintage enthusiast's piece, rather than a mainstream one. SD is in the 'luxury' bracket (I hate that term!).

  16. #16
    Grand Master gray's Avatar
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    I've been waiting a long time for an anniversary watch/movement and it certainly looks the part. What a shame a capacitor is used as I have no faith in their reliability or longevity
    Gray

  17. #17
    Journeyman
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    Quote Originally Posted by hughtrimble View Post
    Not sure why it would impact it at all?

    It's currently positioned as a vintage enthusiast's piece, rather than a mainstream one. SD is in the 'luxury' bracket (I hate that term!).
    Ah okay - I thought they were going to make this as a new affordable movement or something.

  18. #18
    Quote Originally Posted by Seagullfan View Post
    Ah okay - I thought they were going to make this as a new affordable movement or something.
    They could well do so. It's a fair point actually - they're not going to have gone to all this effort to make this just for this retro styled piece are they! You could well be right about this going in to a whole range of watches.

  19. #19
    Grand Master Foxy100's Avatar
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    Quote Originally Posted by hughtrimble View Post
    SD is in the 'luxury' bracket (I hate that term!).
    Me too. When I see the word 'luxury' I want it to be covered in velvet, with gold trimmings etc etc etc.
    You can live in your car but you can't drive your house.

  20. #20
    Grand Master abraxas's Avatar
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    More about the capacitor issue...

    The Seiko Kinetic: Boon or Bane?
    https://quartzimodo.com/the-seiko-kinetic-boon-or-bane/

  21. #21
    Quote Originally Posted by gray View Post
    I've been waiting a long time for an anniversary watch/movement and it certainly looks the part. What a shame a capacitor is used as I have no faith in their reliability or longevity
    Quote Originally Posted by abraxas View Post
    More about the capacitor issue...

    The Seiko Kinetic: Boon or Bane?
    https://quartzimodo.com/the-seiko-kinetic-boon-or-bane/
    It will be a totally different technology.
    The Seiko Kinetic was a high capacitance low voltage capacitor with a liquid dielectric. It's a 330,000uF 2.4V electrolytic. And yes, electrolytic caps fail.

    The cap in the electrostatic watch will be a high voltage, low capacitance device. It will have a solid dielectric, and this type of cap has a much, much lower failure rate.

    You're not wrong to be cautious and I'll admit that I'm speculating on what's inside, but I'm fairly sure I'm not far off. I do not believe that there will be an issue with this cap.

  22. #22
    Grand Master gray's Avatar
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    Thanks for the detail
    Gray

  23. #23
    Craftsman
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    I like this a lot, very cool piece!

  24. #24
    Every time this thread gets bumped up, I hope it's been released so I can buy it!

    Can't think of another watch that's got me this keen in a good while.

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