French Clock Main Spring

Discussion in 'Clock Repair' started by orso, Oct 21, 2019.

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  1. orso

    orso Registered User
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    Jun 9, 2013
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    Hi, all.
    I'm trying to fix this old French Clock I got in pieces from a friend who was trying to clean it. (see pics).
    I found two different springs in the barrels; on the strike side .30mmx21.40mm and on the Time side .25mmx21.25mm; they are both approx. 48" long.
    Both are a bit coned. Since both have signs of having been shortened, I'm not sure of the original length. Any idea about the clock brand and a substitution? The barrels are both 30.3mm Inside Diam. and 24mm dip.
    Thanks

    Case.jpeg Brand Marks.jpeg Main Springs.jpg
     
  2. R&A

    R&A Registered User

    Oct 21, 2008
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    You cane un-cone those by pulling them back the other way. As for the length I would fix the one end. And call it good and test them in the clock.
     
  3. shutterbug

    shutterbug Moderator
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    Oct 19, 2005
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    I agree. They're likely only a couple of inches shorter than they were.
     
  4. R. Croswell

    R. Croswell Registered User

    Apr 4, 2006
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    The brownish colored spring is very likely a replacement, and the other one has obviously been cut and re-holed so there is no way to know if it was a too long that was cut down, or if it has been re-holed before. I don't recognize the logo. ~48 seems about right for length. Make sure the width is such that the spring has a little space between the barrel and the cover. French clocks can be a little fussy about their springs. I would be inclined to replace them, especially the badly coned one with the ragged end.

    RC
     
  5. Willie X

    Willie X Registered User

    Feb 9, 2008
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    Most will be between .010 to .011" thick. So, the .3 mm is a little hefty for a French clock. They could both be reused. Assuming no cracks. The French made some of the best springs ever made.

    WIllie X
     
  6. orso

    orso Registered User
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    Jun 9, 2013
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    Thanks all for your replies.
    I'm inclined to change both springs; I know not everybody will agree, but the ticker one seems too thick for this clock and the tinner, although has no cracks, it has a strange bent at 12" from the top. I used a formula Bangster post time ago and came out with 1237mm (circa 48") and found one .28mm (Circa .11").
    This is also what came out from your answers.
    Thanks again
     

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