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Escape wheel jewels which have a cap and end-piece : reducing endshake.

mikepilk
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mikepilk Distinguished Member

mikepilk

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Posted (edited)

If you have a capped jewel, like the one in the pic, and want to reduce endshake, what is best practice?

Is it OK to just push the hole jewel in, increasing the gap between it and the cap jewel?

Or should you also push the cap jewel down in it's setting to keep the gap constant - probably not easy given how thin the metal end-pieces are.

image.png.dd14480939a4ea6366da46905356daa5.png

Edited by mikepilk
typo
Klassiker Distinguished Member

Klassiker

Posted
Posted
4 minutes ago, mikepilk said:

Is it OK to just push the hole jewel in, increasing the gap between it and the cap jewel?

I don't have an answer for you, but this will not reduce end-shake.

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Neverenoughwatches Distinguished Member

Neverenoughwatches

Posted
Posted (edited)

The end piece is what sets the endshake. You can move the jewel within it maybe more accurately I have, but not sure if this is a practice ( correct spelling for noun form not applicable to American grammar 😄) I would say some decision making is dependent on the status of the fork/escape arbors/staff pivots .

Edited by Neverenoughwatches
mikepilk Distinguished Member

mikepilk

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6 minutes ago, RichardHarris123 said:

We all have those moments, I  find it's becoming more common with age.  Hehe. 

I was about the play the 'age card'. I can't blame the wine, as I'm only just about to open the bottle 🥳

2 minutes ago, Neverenoughwatches said:

The end piece is what sets the endshake. You can move the jewel within it 

To keep the gap constant, both jewels need moving.

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Neverenoughwatches Distinguished Member

Neverenoughwatches

Posted
Posted

Pivot length may dictate wether to move the hole jewel. Moving the end piece jewel did adjust the endshake for me.

7 minutes ago, mikepilk said:

To keep the gap constant, both jewels need moving.

👍To maintain the lubrication 

But the pivot shoulder/cone still needs to remain free of the hole jewel.

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