balance pivot

[chris mabbott]

As an addendum to David’s suggestion…. Ascertain first that the jewels are in fact the friction type and NOT the rub in kind. If they are rub in jewels and you attempt to adjust them with the seitz tool, they’ll break as rub ins are pre-set.

[bobpat]

they are friction type .

if they were rub-in, that would be a whole new topic,, 🙄

[chris mabbott]

You will have them eventually, OH YES, you will have them

[arutha]

Did you ever get to the bottom of the problem?
After looking at your pictures again it looks like the pivot is slighyly bent in the first picture, as you took the picture through a loupe I did wonder if it was distortion but looking at your 3rd picture it again looks out of true. I am talking about the pivot on the roller side of the balance.
Paul.

[tmac1956]

Paul:

It looks slightly bent to me as well. But what do I know… the vision in my right eye is like looking into a fun-house mirror.

I know that trying to get them straight again is dang near impossible but that one is so slightly bent (assuming its not worse in axis parallel to the plane of the picture) that I wonder if a heavy pair of pivot straightening tweezers might get it pretty close… At the very worst, the pivot would just break in the process.

Thanks,
Tom

[bobpat]

I thought it looked bent too, not sure if its the angle I took the pics or not. I did get new jewels, but haven’t put them in yet. Maybe if I chuck it in my lathe, I can see if its bent.

[david pierce]

Bob,
You might also try rolling it in the jaws of a poising tool and check for any oscillation.
david

[bobpat]

Working on getting a poising tool ,that would be my first choice but that’s one tool
I haven’t gotten, YET

[tmac1956]

@bobpat wrote:

Working on getting a poising tool ,that would be my first choice but that’s one tool
I haven’t gotten, YET

bobpat:

You’ll pay more for one that has a functioning level. However, if you find one with good smooth jaws without the level, you can buy a bulls eye level from Harbor Freight for less than a dollar and just place it on the jeweled jaws to level it up.

Here’s a link:
http://www.harborfreight.com/bullseye-surface-level-67767.html

Thanks!
Tom

[bobpat]

Thanks Tom, good tip, I will keep that in mind

[bernie weishapl]

Bobpat I just bought a poising tool off ebay for $40 with free shipping. It has the leveling bubble and ruby jaws. If you watch you can find them at a decent price. This one was a buy it now and I jumped on it quick.

[bobpat]

thanks Bernie, I have my eye on one, unless its the one you bought, Lol.. They are always on there.. Waiting for a good one at a good cost

[david pierce]

Uncle Larry usually has one or two or these tools for sale at a good price. That is always a good first place to look for a watch tool.
david

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