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jdm Distinguished Member

jdm

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In the past I have been frustrated with Seiko movements not running as they should (poor amplitude) after my attempts at servicing. Seems like I'm doing better now...
The only change, I'm now using 9010 for sweep seconds wheel.

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Alastair WRT Addict

Alastair

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Anything fast moving should have a thin oil. Slow moving stuff Thick oil--Simple really, always served me well...

On very small Cal, you could even go down to 9000 for escape, second/third and balance, if you get amplitude issues...

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jdm Distinguished Member

jdm

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16 minutes ago, Alastair said:

On very small Cal, you could even go down to 9000 for escape, second/third and balance, if you get amplitude issues...

Small calibers move faster than large ones? Not by rule.

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jdm Distinguished Member

jdm

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51 minutes ago, Alastair said:

No--Not necessarily, but the drag from a thicker oil on a small calibre (with correspondingly smaller mainsprings and torque) can in some cases, cause issues...

You're right here, good point.

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