Help on loud rotor
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  1. #1
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    Help on loud rotor

    So I received this Eterna heritage today from Ashford. The watch looks like it has been worn based on the leather strap having creases at the holes. The watch makes a very loud noise when the rotor rotates. I am not sure if this is normal, since it is a thinner watch. It can be heard and does it have to be near the ear. Anybody experienced this before?

  2. #2
    Member texag03's Avatar
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    I had that happen on a dress watch with a miyota 9015. SUPER loud rotor, but never had any issues with its accuracy. I didnt have it long enough to experience longevity issues.

  3. #3
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    Re: Help on loud rotor

    As you get older, the loudness will fad away.

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  5. #4
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    Re: Help on loud rotor

    Quote Originally Posted by texag03 View Post
    I had that happen on a dress watch with a miyota 9015. SUPER loud rotor, but never had any issues with its accuracy. I didnt have it long enough to experience longevity issues.
    Miyotas are uni-directional winding, so the rotor will free spin one way. Can result in a lot of noise when it goes whirring in the free-spin direction. I believe all movements used by Eterna are bi-directional, so you don't get a free spin. Unless it's a chronograph using a 775x Valjoux. Those are also uni-directional and can have a noisy rotor. I'm assuming that's not the case here since the watch is described as "thin" and 775x powered watches, well, aren't thin.
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  6. #5
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    I can’t speak to the Eterna Heritage in particular, but watches with unidirectional rotors can be loud enough to be heard while on the wrist. Also, the trend in recent years has been towards ceramic ball bearings which don’t require lubrication. The ceramic bearings can be noisy compared to lubricated steel.

  7. #6
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    Re: Help on loud rotor

    I have four Eternas, including two thin profile Legacy 1948s and they are all silent. Doesn't sound normal.

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  8. #7
    Member TwentiethCenturyFox's Avatar
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    Re: Help on loud rotor

    Agreed, does not sound proper. Send it back I think.

  9. #8
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    Re: Help on loud rotor

    I had this issue frequently with seiko 7s26 movements and invariably the rotor had come unscrewed and was touching the case. Need a very fine bladed screwdriver to get it back tight and if I remember I think I usually used a blade.



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  10. #9
    Member jermyzy's Avatar
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    Re: Help on loud rotor

    The rotor on my zenith defy openwork is quite loud as well, was told by Zenith this was normal
    Just starting my watch collection...

    Mine:
    Oris 581 7592 40 51 (Artelier Complication)
    Zenith 03.0516.685 (Defy Classic Power Reserve Elite)
    Zenith 03.1260.4039 (Chronomaster Open Grande Date XXT)
    Zodiac Astrographic 2000
    Victorinox 241425 (Dive Master 500 Mechanical)
    Stowa Flieger Baumuster B with 215-1 handwind
    Glashutte Original 1-36-01-01-02-01 (Senator Excellence)
    Zenith 95.9000.670/78.M9000 (Defy Classic Openworked)
    Zenith 01.0500.420 (El Primero HW)
    Tudor 91210N (North Flag)

    Wife:
    Perrelet A2038/1 (Diamond Flower)
    Oris 561 7604 40 94 (Artelier Date Diamonds)
    Zenith 03.1220.6801 (Baby Open Heart)

  11. #10
    Member ffritz's Avatar
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    Re: Help on loud rotor

    This Eterna Heritage?

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    If yes, that should be a Sellita SW300 movement. Full agree with MX793, the rotor should be rather quiet. Doesn't sound normal.

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