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BFG866 Balance Cock Stud

mikecj
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mikecj Member

mikecj

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Posted

Everyone,

I am working on a BFG866 movement. I need to replace the staff due to a broken pivot. However, I can't figure out how to remove the stud holding the hairspring. Is it friction fit? There is no stud screw as with many movements. Thought I would ask before I go mucking about.

 

Thanks,

 

MikeCJ

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Neverenoughwatches Distinguished Member

Neverenoughwatches

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Posted
11 hours ago, mikepilk said:

"BFG" Big Friendly Giant ?  

Can you post a pic of the balance stud ?

Haha that always springs to my mind as well when i hear it.

11 hours ago, mikecj said:

Please see the attached pics. Top view, bottom view, and close up of the stud.

IMG_20221019_133438378_BURST000_COVER_TOP.jpg

IMG_20221019_133528355.jpg

IMG_20221019_133806982_BURST000_COVER_TOP.jpg

Looks like a pain to remove and worse to reassemble.  Any easier taking the arm off instead  ?

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