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Jttuck
PostPosted: Thu Oct 07, 2010 10:13 am 
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Thanks for your quick response.

Roffensian wrote:
Watches tend to run faster on their backs than with the crown up (balance horizontal vs. vertical), the difference can be several seconds.


Good to know. Is this inherent to most watches or is this specific to Breitlings?

Roffensian wrote:
A winder will affect accuracy because it will keep the mainspring at a fairly consistent wind rather than it running down. Whether that is a good thing or a bad thing will depend on the inherent accuracy of the watch, the amount of reserve in the mainspring, etc - impossible to provide a single answer to that one.


In other words in some cases and for some watches the winder helps maintain accuracy, while in other cases it could help propagate inaccuracy.
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Roffensian
PostPosted: Thu Oct 07, 2010 10:14 am 
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All mechanical watches will behave that way - it's gravity on the balance.

And yes, winders change behaviour but that could compensate or exaggerate.
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RJRJRJ
PostPosted: Thu Oct 07, 2010 12:05 pm 
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Jttuck wrote:
Thanks for your quick response.

Roffensian wrote:
Watches tend to run faster on their backs than with the crown up (balance horizontal vs. vertical), the difference can be several seconds.


Good to know. Is this inherent to most watches or is this specific to Breitlings?

Roffensian wrote:
A winder will affect accuracy because it will keep the mainspring at a fairly consistent wind rather than it running down. Whether that is a good thing or a bad thing will depend on the inherent accuracy of the watch, the amount of reserve in the mainspring, etc - impossible to provide a single answer to that one.


In other words in some cases and for some watches the winder helps maintain accuracy, while in other cases it could help propagate inaccuracy.


Back when I used to care about this stuff, I would spend a few days figuring out how each watch in each position. Sometimes I would get -1 in one position, and +2 on the wrist. With this knowledge, I could position it -1 each night to end up with a net gain of +1 per day. A lot of people are able to keep their watches surprisingly accurate by figuring out the deviations specific to their watch.

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