How do you regulate a Breguet Hairspring...

[ricardopalamino]

Howzit ,..

 I just finished cleaning and lubing a vintage Elgin I have with a 680 movement , and when I put it on my timegrapher to regulate it , I got a surprise . It wasn't the normal hairspring with the first coil that comes off the stud entering the pins of the regulating arm and adjusting the arm to set the rate and beat . It took me a while to realize that this watch had a Breguet , over coil , terminal curve hairspring .

Normal Hairspring...

 

Breguet Hairspring...

 

Here's the info from Ranfft... Which actually shows an Elgin 685 movement . I have the 680 movement ,[same family ]...

 

So my question is....is the hairspring section that leaves the stud and runs under the coils ,[before becoming the first outer coil ],...is that the section of coil that passes through the regulating arm pins ? The pins are not really long enough to go over what looks like the first coil . 

When I first put he balance wheel on the movement the very tips of the pins were kind of over the first outer coil but the rate was super fast , and there was not enough adjustment with the arm to slow it down .  At first I thought the hairspring was magnetized or still dirty so I cleaned it again and de-magnetized it , re-installed it with no improvement ,...and that's when I saw that it was an over coil hairspring .

Cut me some slack for not realizing it had a different hairspring right away ,...it's 3 AM , Wayyy past my bedtime , but I was messing with trying to figure what was going on with this darn watch and the time got away from me .....Any info on how to regulate this puppy is appreciated ....Thanks .

Aloha and good night , Louis

 

[szbalogh]

In mine Glashütte systeme movement the overcoil is regulated.

[StuartBaker104]

The over coil section should sit between the pins. See here...

https://books.google.co.uk/books?id=Bl4tAgAAQBAJ&pg=PA238&lpg=PA238&dq=practical+watch+repairing+fig.+239&source=bl&ots=XHXISiMbSt&sig=LHmrPaeN6sr0VWqWt67bwW-Lbj8&hl=en&sa=X&ved=0ahUKEwiJvIrC77nPAhWLAMAKHRnMC90Q6AEIGjAA#v=onepage&q=practical watch repairing fig. 239&f=false

 

[DouglasSkinner]

My instructor tells me never to do the delicate work when I'm tired.

[szbalogh]

38 minutes ago, DouglasSkinner said:

My instructor tells me never to do the delicate work when I'm tired.

Ah, you know, with two kids as a hobbyst i can only do some jobs after they are in bed, after 2100. In weekends however i have additional 2+2 hours :/ Its hard to resist if i am close to finish something. And if i get wrapped in something interesting repair the time goes much faster and getting to bed after midnight  Sometimes i wake up earlier and sneak out to tinker a bit before the others wake up  

[ricardopalamino]

5 hours ago, StuartBaker104 said:

The over coil section should sit between the pins. See here...

https://books.google.co.uk/books?id=Bl4tAgAAQBAJ&pg=PA238&lpg=PA238&dq=practical+watch+repairing+fig.+239&source=bl&ots=XHXISiMbSt&sig=LHmrPaeN6sr0VWqWt67bwW-Lbj8&hl=en&sa=X&ved=0ahUKEwiJvIrC77nPAhWLAMAKHRnMC90Q6AEIGjAA#v=onepage&q=practical watch repairing fig. 239&f=false

 

StuartBaker104 , 

Thank You for offering some info  . I went through the link but did not see anything about the over coil section and the regulating pins ,..or I missed it . I will look again . 

In the meantime I would still appreciate any info on this subject from any members .

1 hour ago, DouglasSkinner said:

My instructor tells me never to do the delicate work when I'm tired.

Your instructor knows what he's talking about....

 

45 minutes ago, szbalogh said:

Ah, you know, with two kids as a hobbyst i can only do some jobs after they are in bed, after 2100. In weekends however i have additional 2+2 hours :/ Its hard to resist if i am close to finish something. And if i get wrapped in something interesting repair the time goes much faster and getting to bed after midnight  Sometimes i wake up earlier and sneak out to tinker a bit before the others wake up  

I was able to stay up late because I didn't have to work the next day .

I love working on watches in the wee hours with music playing and a Youtube video about watch repair , [such as the watch repair channel ] , with the sound muted , playing in the background .

[StuartBaker104]

12 minutes ago, ricardopalamino said:

I went through the link but did not see anything about the over coil section and the regulating pins ,..or I missed it . I will look again . 

Here is a photo of the page from my copy

 

[ricardopalamino]

18 minutes ago, StuartBaker104 said:

Here is a photo of the page from my copy

 

Thanks , I went back and found it . I also just bought the book in paperback in good used condition from Amazon for $9.92 including shipping .

 

Mahalo , Louis

[ricardopalamino]

Things are looking much better today with the Info that StuartBaker104 provided .  

This watch is a 1954 Lord Elgin Cranbrook , Movement 680 , serial # [capital I ]  I354276 . I picked it up in a pawn shop in Denver  last year for $10 .

The Image of the watch...

 

 

And Today's timegrapher results after properly setting the overcoil of the hairspring between the pins of the regulating arm...

 

 

The results are not as good when I flip the movement over ,.....but I'll take it .