Good diagram depicting train

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  1. #1
    SCD
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    Good diagram depicting train

    Where can I find a good diagram or picture or animation or anything that clearly shows the various wheels in the train and which wheels drive which hands? I haven't found a clear enough picture yet to fully "get it".

  2. #2
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    Re: Good diagram depicting train

    Maybe this is interesting, it's an old Hamilton movie about how a watch works: http://www.youtube.com/watch?v=OiCPu0SjEW4 .
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  3. #3
    Member AAWATCHES's Avatar
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    Re: Good diagram depicting train

    Quote Originally Posted by Michelangelo View Post
    Maybe this is interesting, it's an old Hamilton movie about how a watch works: http://www.youtube.com/watch?v=OiCPu0SjEW4 .

    Thats great thanks for posting

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  5. #4
    Member J_Hack's Avatar
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    Re: Good diagram depicting train

    Agreed, this video is very good. Nice and simple descriptions. Thanks.

  6. #5
    SCD
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    Re: Good diagram depicting train

    Yes I've watched that video. It's very informative. But having watched it, it's still not clear when you look at an actual movement that's not stretched out which wheel does what. If someone who knows could take a look at this drawing
    http://www.timezone.com/library/wglo...93544649519769
    and tell me the function of each wheel named there, as relates to the hands on the dial that'd be really great.

  7. #6
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    Re: Good diagram depicting train

    Quote Originally Posted by SCD View Post
    But having watched it, it's still not clear when you look at an actual movement that's not stretched out which wheel does what.
    Click the link that I gave you in the other thread. There's a link entitled "Wheel Train" in it that describes the basics. The whole thing is essentially reduction gears to let the mainspring unwind at a controlled rate, and the number of teeth are part of an equation to arrive at the desired escapement speed (bph). A watch that has a subdial seconds uses the 4th wheel to drive the second hand. Center sweep seconds uses another wheel in the train to move the second hand which is attached to the center pinion.

  8. #7
    SCD
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    Re: Good diagram depicting train

    Quote Originally Posted by ulackfocus View Post
    Center sweep seconds uses *another* wheel in the train to move the second hand which is attached to the center pinion.
    Which wheel drives the center seconds hand? I thought that whichever wheel is directly engaged with the escape wheel pinion would drive the seconds.

    Thanks for the link. I've read through it once and am going through it again. I'm trying.

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