Newbie question regarding autowinding

Thread: Newbie question regarding autowinding

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  1. #1
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    Question Newbie question regarding autowinding

    I've just taken delivery of my first automatic watch, a Limes NightFlight purchased from a forum member. So far, so good - I love it.

    I have a question about the ETA 2824-2 movement. Does it wind on the basis of any movement of the rotor - even if it does not move 360 degrees around its axle? For example, when I walk and my arm is moving back and forth through perhaps 16 inches with each stride, is the rotor moving enough to wind the mechanism?

  2. #2
    beshannon
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    Re: Newbie question regarding autowinding

    Yes

  3. #3
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    Re: Newbie question regarding autowinding

    The rotor is there to maintain spring tension.

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  5. #4
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    Re: Newbie question regarding autowinding

    Everyday movement is enough to keep your watch wound, unless you're sedentary. You don't need to swing your arm like Pete Townsend to wind it.

  6. #5
    v76
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    Re: Newbie question regarding autowinding

    Haha ... I can just picture the OP in my mind doing precisely that. Wicked air guitarist?
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  7. #6
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    Re: Newbie question regarding autowinding

    Geesh. I may be a newbie but I really didn't think I needed to do a Townshend-style air guitar solo. This can be such a cruel forum...

  8. #7
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    Re: Newbie question regarding autowinding

    Quote Originally Posted by siodad View Post
    Geesh. I may be a newbie but I really didn't think I needed to do a Townshend-style air guitar solo. This can be such a cruel forum...

    Its okay, a Hendrix shred will wind it just as well

  9. #8
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    Re: Newbie question regarding autowinding

    Quote Originally Posted by siodad View Post
    even if it does not move 360 degrees around its axle?
    That's a good question. There are only 2 or 3 types of ways of transferring the rotation of the rotor into spring winding in common use and as far as I understand the answer to your question is 'yes'. The rotor winds the spring in terms of ratcheting a wheel or pair of wheel in one direction or the other (depending on which way the rotor is rotating) and it does not need to make a full swing around for that to work.

    In other words you could just have the rotor making small swings back and forth with out a full swing around and it is still working (each way/direction)

    More info here:http://en.wikipedia.org/wiki/Automatic_watch
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  10. #9
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    Re: Newbie question regarding autowinding

    OK first we had the visual of the OP doing some roundhouse Townsend licks w/his watch- then I get this visual of him lighting it w/lighter fluid ala Jimi. I really am worried about myself.....

    But what I really wanted to tell the OP was that in the early '50's Omega and a few others made autos using a rotor that only spun about 220 degrees or so before being stopped - the so'called "bumper automatics". I've owned a few and must admit to kinda like the little bumps they make! As I understand it, this would get around some Rolex patents, but was later decided that the 360 rotor was fair game.

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