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My understanding from listening to watch people is that old lubricants tended to degrade over years which meant that watches back then needed to be serviced eve
by hotpotamus 4y ago
My understanding from listening to watch people is that old lubricants tended to degrade over years which meant that watches back then needed to be serviced every 5-10 years regardless of use. Modern chemistry means they're much more stable, so a watch can last indefinitely on the shelf, but will still have tiny amounts of wear while running (thus hard-on-hard bearing surfaces - jewels - are used to extend the life). I find it a bit ironic that these advances were made after mechanical watches have become close to deprecated for actual timekeeping duty.
- randomcarbloke 4y agothe effects of errosion can be mitigated by using a lower beat too - this is why some of the big names in independant watchmaking have been pushing for lower frequency watches - to extend the service interval, I believe George Daniels wrote about it before his death.
- bayindirh 4y agoLongines’ calibers use reduced beat (3.5Hz) both to increase reserve to 72 hours and make service intervals longer as far as I know.