Lesson: Part 2 - Removing Balance
-
Recently Browsing
- No registered users viewing this page.
-
Topics
-
Posts
-
I can't even see the 3.55 you've shown when I search Cousins for the 2892-A2?
-
That's another interesting solution. Thanks for that. Aren't the Elgin staffs specifically designed to be a friction fit rather than riveted?
-
By nickelsilver · Posted
The pushing out method in modern times comes from Rolex, and they have specifically made staffs to accommodate it. I believe Elgin did something similar in the past. If you don't have a lathe, then a Platax or something like the K&D tool that holds the balance arms firmly down is the best. Still a risk of opening the hole. If you have a monometallic balance (no steel) you can soak in a saturated solution if aluminum to dissolve the staff. This won't harm the balance, and is preferable to punching out. -
The same tool will work on all sizes of balance. You sit the staff in the correct size hole in the staking set base. The tool them clamps the balance arms, and then the punch pushes the staff out.
-
That's just it. I am actually looking to see if I can replace the second wheel on a Omega 3220 which uses the ETA 2892-A2 as it's base. The 3220 actually has a push fit chronograph driving wheel on the pivot rather than a second hand. Not certain that this would be a direct replacement but it could be worth a shot versus paying $150AUD for the Omega part.
-
Recommended Posts