Movement/Power Reserve Ratio - Automatics

Thread: Movement/Power Reserve Ratio - Automatics

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  1. #1
    Member CBar's Avatar
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    Movement/Power Reserve Ratio - Automatics

    Hi All, I'm new here so pardon my lack of insight, hopefully you can all help with my education. I own a few automatics and am wondering, in general terms, the relationship between wearing a watch and the amount of power it builds up. In other words, if I wear it for an hour does that get me another hour of use? Maybe 2 hours or maybe 1/2 hour? One reason I ask is because I recently bought a watch winder on the auction site and it seems to not rotate a lot more than it does. Is this normal? Thanks for your help!

  2. #2
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    Re: Movement/Power Reserve Ratio - Automatics

    The rotor in an automatic is there to maintain spring tension. That is
    why you wind an auto using the crown. To maintain spring tension a
    winder needs to rotate at least 700 revs per day. Before puting a
    watch on a winder, fully wind it. If a watch is on a winder for some
    time, wind it again before wearing it.

  3. #3
    Member Tragic's Avatar
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    Re: Movement/Power Reserve Ratio - Automatics

    Your winder is working as it should I think.
    If it's reasonably close to correct time wise, just slap it on your wrist and enjoy it.
    If your wrist happens to move occasionally during your day, it will keep running.
    "Time is the school in which we learn. Time is the fire in which we burn."

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  5. #4
    stuffler,mike
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    Re: Movement/Power Reserve Ratio - Automatics

    Quote Originally Posted by CBar View Post
    Hi All, I'm new here so pardon my lack of insight, hopefully you can all help with my education. I own a few automatics and am wondering, in general terms, the relationship between wearing a watch and the amount of power it builds up. In other words, if I wear it for an hour does that get me another hour of use? Maybe 2 hours or maybe 1/2 hour? One reason I ask is because I recently bought a watch winder on the auction site and it seems to not rotate a lot more than it does. Is this normal? Thanks for your help!
    Does your automatic movement winds up bi-directional, right or left turned. That´s what you should know first.
    Here are some movment related informations:

    B= bi-drectional


    A.Schild AS 5008 right 800 turns per day
    ETA 2000 right 700 tunrs per day
    ETA 2824 B 650 turns per day
    ETA 2834 left 650 turns per day
    ETA 2836 left 650 turns per day
    ETA 2892 ... 2895 left 650 turns per day
    Glashütte GUB 39 right 600 turns per day
    Lemania 5100 left 800 turns per day
    Rolex 3135 B 650 turns per day
    Seiko 7S26 B 700 turns per day
    Valjoux 7750, 7751 right 750 turns per day
    Zenith 410 B 600 turns per day

    Chinese movements: No clue.

    A very complete list: click here / Orbita watchmovers

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