Hairspring adjustment

[Murks]

Hi can someone help this hairspring is not on a terminal curve and I don’t know where is the bend where too manipulate it can someone help upload couple of pictures clear view pictures for you ought to see if someone can help me and the balance studs are there straight and parrell

[AndyGSi]

I think you'll need to post a photo from the top and what movement is it from?

[watchweasol]

Hi. Judging by th3 picture of the cock and regulator position  the spring has an over coil.  It needs a bit of attention, but better pictures are needed. Thanks

[Murks]

That’s the best could do regard to the pictures the movement I’m working on is gruen veri -thin380

[Mercurial]

It would be a lot easier to find any issues with this hairspring if you post a picture of it taken looking down on it from directly above, like this drawing :

The two dots in the drawing represent the regulator pins, and they are located either side of the terminal curve. 

If the spacing of the coils in the flat section of your hairspring is even, then I suggest you install the spring on the balance cock, without the balance wheel, and check that the collet is centred over the jewel hole. 

Once the collet is centred over the jewel hole, you need to check that the regulator pins travel freely over the terminal curve of the hairspring without disturbing it. 

You can then replace the hairspring onto the balance staff, and fit it to the watch to check the vertical clearances, including checking that the overcoil doesn’t rub on the main body of the hairspring or the balance cock.

I hope that helps,

Mark