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Gary Busey · 21 October 2013, 08:23 AM

Hi all,

So i tested my bb to see if crown down position overnight would compensate the average daily -5sec i get.

Well, it gained 20 secs, overnight!

Is that normal? Seems alot

Gb

GradyPhilpott · 21 October 2013, 08:31 AM

It doesn't sound normal, but there are a lot of variables to consider.

Before you try that again, make sure the watch is fully wound, because a watch with little power reserve will, if I'm not mistaken, gain more time than a watch with a full power reserve because of the difference in amplitude.

You should also test the timekeeping over a period of at least a week to let the variations average out.

You should also be absolutely sure of your time reference. This is the best I've found.

http://time.is/

21 October 2013, 08:23 AM	#1
Gary Busey "TRF" Member Join Date: Feb 2011 Location: Pothole Watch: Tudor Black Bay Posts: 890	Timekeeping- Huge variation overnight - faster Hi all, So i tested my bb to see if crown down position overnight would compensate the average daily -5sec i get. Well, it gained 20 secs, overnight! Is that normal? Seems alot Gb __________________ Tudor Black Bay Red Rose ETA Rolex 214270 Explorer 1 Tudor BB 41 Blue Dial Doxa Sub 200, SKX009 Aquastar Deepstar

21 October 2013, 08:31 AM	#2
GradyPhilpott 2024 SubLV41 Pledge Member Join Date: Sep 2008 Location: New Mexico Watch: Seiko #SRK050 Posts: 34,447	It doesn't sound normal, but there are a lot of variables to consider. Before you try that again, make sure the watch is fully wound, because a watch with little power reserve will, if I'm not mistaken, gain more time than a watch with a full power reserve because of the difference in amplitude. You should also test the timekeeping over a period of at least a week to let the variations average out. You should also be absolutely sure of your time reference. This is the best I've found. http://time.is/ __________________ JJ Inaugural TRF $50 Watch Challenge Winner

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