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  1. #1

    Default New Haven Mainspring advice

    Hi all, the spring in the picture is from the strike side of my New Haven movement. Is it still serviceable, or should it be replaced? I dismantled the clock so as to reset the strike (thanks RC & TD) and have another chance to practice resembling.

    As this is an open spring I assume the rules (just read about some of those) for a spring that lives in a barrel don't apply? So, apart from obvious things like cracks and rust, how do I tell if it's a bin job due to lack of power?

    Cheers
    Hogs.




    The more I ask the more I learn.
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  2. #2

    Default Re: New Haven Mainspring advice (By: Hogshair)

    Looks normal to me.
    Willie X

  3. #3
    Registered User THTanner's Avatar
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    Default Re: New Haven Mainspring advice (By: Hogshair)

    I am not sure if it is a bin job - but if it is - I have found it helpful to keep these old springs to use when I need to make certain kinds of springs or spring washers. So if you decided that it is a bin job - make it an "old spring metal" bin job for when you need a nice piece of spring steel in the future - and don't just toss it away for good.

    Quote Originally Posted by Hogshair View Post
    Hi all, the spring in the picture is from the strike side of my New Haven movement. Is it still serviceable, or should it be replaced? I dismantled the clock so as to reset the strike (thanks RC & TD) and have another chance to practice resembling.

    As this is an open spring I assume the rules (just read about some of those) for a spring that lives in a barrel don't apply? So, apart from obvious things like cracks and rust, how do I tell if it's a bin job due to lack of power?

    Cheers
    Hogs.




    The more I ask the more I learn.
    You miss 100% of the shots you don't take. - The Great One

  4. #4
    Registered user. kinsler33's Avatar
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    Default Re: New Haven Mainspring advice (By: Hogshair)

    Looks okay. You'll likely have to tighten the innermost coil so that the hook on the winding arbor can reach through the hole on the mainspring.

    M Kinsler
    512 East Mulberry Street; Lancaster, Ohio USA 740-503-1973; kinsler33@gmail.com
    http://www.lancastereaglegazette.com/search/kinsler/

  5. #5

    Default Re: New Haven Mainspring advice (By: Hogshair)

    Looks like it should be OK. Any spring that's been in service for a few years will expand less than a brand new spring but will still have plenty of power.

    RCc

  6. #6

    Default Re: New Haven Mainspring advice (By: R. Croswell)

    I almost never replace a spring, because most of the new ones are junk.
    A man with a clock always knows the time. A man with two clocks is never sure.

  7. #7
    Registered user. Kevin W.'s Avatar
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    Default Re: New Haven Mainspring advice (By: shutterbug)

    I am with Shutt, rarely replace main springs. The one in the picture looks fine to re use.
    One clock at a time. Kevin West
    http://www.global-horology.com/GHMB/

  8. #8

    Default Re: New Haven Mainspring advice (By: Kevin W.)

    Hi all, thanks for the help, appreciate it. Surprised to hear that new springs don't make the grade.

    Is that across the board as in all suppliers or are there one or two manufactures out there still turning out the good stuff?

    Cheers
    Hogs.

  9. #9

    Default Re: New Haven Mainspring advice

    German springs are good. Japan makes fair springs. Indian springs are not good. Many suppliers will no longer tell you where they get their springs.
    A man with a clock always knows the time. A man with two clocks is never sure.

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