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Old 26 April 2008, 05:56 AM   #1
Rolex Freak
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How Fast Or Slow Should It Be?

In comparing my YM or any Rolex to http://accurist123.com/ what should you expect after a month or two. What would be considered acceptable? Many thanks.
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Old 26 April 2008, 05:58 AM   #2
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I would expect it to be within COSC specs.
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Old 26 April 2008, 06:00 AM   #3
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any COSC rolex sould be -4 to + 6 seconds per day. so the limits would be 2 minutes slow or 3 minutes fast for one month
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Old 26 April 2008, 06:14 AM   #4
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Personally, I expect (or prefer) my Rolex watches to run slightly fast even though up to minus 4 secs. would be within specs.

The accurist123 site has been quite unreliable lately, btw. If you compare your Rolex to the accurist123 site only, you might be surprised to find that your Rolex is up to 30 secs. fast or slow.

A more precise and reliable site is wwp.greenwichmeantime.com
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Old 26 April 2008, 06:24 AM   #5
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Quote:
Originally Posted by SPACE-DWELLER View Post
Personally, I expect (or prefer) my Rolex watches to run slightly fast even though up to minus 4 secs. would be within specs.

The accurist123 site has been quite unreliable lately, btw. If you compare your Rolex to the accurist123 site only, you might be surprised to find that your Rolex is up to 30 secs. fast or slow.

A more precise and reliable site is wwp.greenwichmeantime.com
Compared to the site stated above, my watch is about 9 seconds behind. My watch displayed 4:22.10 while the clock showed 4:22.19. Is this ok. What should i be looking for. Thanks.
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Old 26 April 2008, 06:44 AM   #6
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Sandro, your YM is capable of excellent accuracy, easily within COSC specs (as is most any decent timepiece). The real issue is consistency of the movement.
That is, is rate of gain (or loss) consistent day after day. IMO this is the real test of an accurate watch, and here Rolex performs like very few I've seen.

Modern movements used in Rolex timepieces are among the most consistent in rate of gain or loss of any watch out there--and under conditions that would make lesser brands fold.

Once that rate is established (through monitoring from a known time source and over a period of time--I don't mess with anything for a month), the watch can be regulated to amazing accuracy.

I have several pieces that are in sync with a known source to less than a minute a month (regulated). My GMT IIc goes WAY better--out of the box.
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Old 26 April 2008, 06:50 AM   #7
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Sandro, your YM is capable of excellent accuracy, easily within COSC specs (as is most any decent timepiece). The real issue is consistency of the movement.
That is, is rate of gain (or loss) consistent day after day. IMO this is the real test of an accurate watch, and here Rolex performs like very few I've seen.

Modern movements used in Rolex timepieces are among the most consistent in rate of gain or loss of any watch out there--and under conditions that would make lesser brands fold.

Once that rate is established (through monitoring from a known time source and over a period of time--I don't mess with anything for a month), the watch can be regulated to amazing accuracy.

I have several pieces that are in sync with a known source to less than a minute a month (regulated). My GMT IIc goes WAY better--out of the box.

Sorry but what is "COSC"? Thanks.
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Old 26 April 2008, 06:56 AM   #8
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Old 26 April 2008, 07:00 AM   #9
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FYI, my 16610 is 2 seconds slow in the past 4 days. Hope this helps.
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Old 26 April 2008, 07:04 AM   #10
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Is a few seconds a day heare and there going to make the difference.
Damn right. COSC or better for me.
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Old 26 April 2008, 07:05 AM   #11
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Contrôle Officiel Suisse des Chronomètres, the Official Swiss Chronometer Testing Institute
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Old 26 April 2008, 07:37 AM   #12
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Compared to the site stated above, my watch is about 9 seconds behind. My watch displayed 4:22.10 while the clock showed 4:22.19. Is this ok. What should i be looking for. Thanks.
Try comparing your Rolex against wwp.greenwichmeantime.com instead. As stated, often the accurist site is not accurate.
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Old 27 April 2008, 01:13 AM   #13
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Contrôle Officiel Suisse des Chronomètres, the Official Swiss Chronometer Testing Institute
Correct!!!
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Old 27 April 2008, 01:20 AM   #14
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In comparing my YM or any Rolex to http://accurist123.com/ what should you expect after a month or two. What would be considered acceptable? Many thanks.
Wow that's a neat site!! Is it atomic? Or just a fancy graphic that's in sync with computer time?
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