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BHE · 25 January 2007, 02:15 AM

Amazing accuracy from an automatic watch. I've been tracking the accuracy of my LV Sub over the past 30 days...it is running +1.7 seconds per day.

How fast or slow do your Rolex's run?

Dan Pierce · 25 January 2007, 02:19 AM

My GMT II is a little less than -1 sec per day. Going to check the monthy rate to get it exact. Gotta love that accuracy!

dP

Nine11 · 25 January 2007, 02:33 AM

Over 3 weeks now and she is pefect. Learn your watch, if you lay her down on the correct side she will run perfect.

padi56 · 25 January 2007, 02:34 AM

Quote:

Originally Posted by BHE

Amazing accuracy from an automatic watch. I've been tracking the accuracy of my LV Sub over the past 30 days...it is running +1.7 seconds per day.

How fast or slow do your Rolex's run?

Yes agree great accuracy but have we progressed in timekeeping mechanically all that much.Most mechanical movements today can be fine tuned with a bit of patience to run to the COSC standard.So guys next time your watch is perhaps a few seconds fast or slow just outside COSC spec, think about John Harrison's watches made almost 300 years ago.No computer aided graphic designs no machine robots to cut the precision parts. Only his bare hands and by todays standards very primitive tools.And a watch tested in one of the hardest environments around on the sea.John Harrison's son William set sail for the West Indies, with the Harrison H4 marine chronometer, aboard the ship Deptford on 18 November 1761. They arrived in Jamaica on 19 January 1762, where his watch was found to be only 5 seconds slow! in almost 2 months accuracy three times better, than that required to win the £20,000 Longitude prize,in them days £20000 must have been quite a sum of money.So next time when your Rolex or any watch is just a few seconds out simply think of John Harrison who made a mechanical watch almost 300 hundred years ago that was more accurate than most mechanical wrist watch today,better than some quartz.

And have several watches Rolex and others running around the same time as the first poster.Lets not forget your Rolex is built to be a Chronometer,so high accuracy should be expected.

Below is the copy of the German Din certificate (a higher standard that the Swiss Cosc) for my ETA powered Dreadnought watch, as you can see +0.4 seconds a day,not bad for a so called humble ETA 2824-T2 movement,less than half a second a day.

mike · 25 January 2007, 11:44 AM

The LV I wear is +2 sec a day.

Rockrolex · 25 January 2007, 12:10 PM

My GMT II runs about > +4 sec./day. That's fine with me. I am not anal about my timekeepers.

A. Jacobs · 25 January 2007, 01:24 PM

My Sub date averages a 2.4 second loss per day.

Blue Bull · 25 January 2007, 01:31 PM

Whats the reference for "official time" anyway ? Did a search and some of this "time and date sites" vary by 30 secs ...

What do you use as the reference for time ?

A. Jacobs · 25 January 2007, 01:36 PM

Quote:

Originally Posted by Blue Bull

Whats the reference for "official time" anyway ? Did a search and some of this "time and date sites" vary by 30 secs ...

What do you use as the reference for time ?

I have a digital atomic clock that I use to compare my watches to.

mrbieler · 25 January 2007, 01:43 PM

I use this web page
http://wwp.greenwichmeantime.com/

BHE · 25 January 2007, 01:51 PM

Quote:

Originally Posted by Blue Bull

Whats the reference for "official time" anyway ? Did a search and some of this "time and date sites" vary by 30 secs ...

What do you use as the reference for time ?

I use http://www.time.gov

ROLEX4FD · 25 January 2007, 03:50 PM

My TT Blue Sub runs between + .66 and + .75 seconds per day - and has been doing since I got her new in June of '06. I couldn't be happier!!

henry2703 · 25 January 2007, 04:00 PM

0.66 to 0.75 seconds...

wow.. what did you use to measure that kind of difference?

Solo118 · 5 February 2007, 04:25 PM

It appears I am losing -2 seconds per day... Is it just me or do most ppl usually GAIN a couple of seconds a day?

JJ Irani · 5 February 2007, 04:27 PM

Quote:

Originally Posted by Solo118

It appears I am losing -2 seconds per day... Is it just me or do most ppl usually GAIN a couple of seconds a day?

-2 secs/day is acceptable and still within COSC specifications. Some watches lose, some gain.

Try placing your watch crown UP at night on the dresser. Might help it to gain. If not, then try the dial UP position and see if that works.

Good luck - JJ

nko51 · 6 February 2007, 02:55 AM

My Rolex 14060M runs, +2 seconds per day.
My Rolex GMT-Master II, -1 seconds per day.
My Rolex Sub Date, +1.5 seconds per day.

The chrono range is -4 to +6 seconds per day.

.......................--::**::--..Rolex Forever..--::**::--.........................
...............I KNEEL IN THE LONG SHADOW OF YOUR GREATNESS.............

padi56 · 6 February 2007, 03:13 AM

Quote:

Originally Posted by nko51

My Rolex 14060M runs, +2 seconds per day.
My Rolex GMT-Master II, -1 seconds per day.
My Rolex Sub Date, +1.5 seconds per day.

The chrono range is -4 to +6 seconds per day.

.......................--::**::--..Rolex Forever..--::**::--.........................
...............I KNEEL IN THE LONG SHADOW OF YOUR GREATNESS.............

Not quite true the Swiss chronometer COSC standard is -4 to +6 the Japanese chronometer, and the European chronometer Din standards are set higher for mechanical watches.

nikhsub1 · 6 February 2007, 03:37 AM

OK, for the first 3 months or so of my EXP II's life it ran about +1 second a day. Now, for the last 3 months or so it is +8 seconds a day. I'm not happy with that but I don't feel like giving the watch to RSC BH for 2 weeks just to adjust it.

padi56 · 6 February 2007, 03:46 AM

Quote:

Originally Posted by nikhsub1

OK, for the first 3 months or so of my EXP II's life it ran about +1 second a day. Now, for the last 3 months or so it is +8 seconds a day. I'm not happy with that but I don't feel like giving the watch to RSC BH for 2 weeks just to adjust it.

Well most mechanical watches once they bed in might gain a second or two.Experiment with different resting positions at night,when off your wrist try it crown down first.Regarding regulation if your Ad has a watchmaker on site, he could regulated it while you wait,its just a half hour job or even less.

A. Jacobs · 6 February 2007, 04:51 AM

Quote:

Originally Posted by padi56

Not quite true the Swiss chronometer COSC standard is -4 to +6 the Japanese chronometer, and the European chronometer Din standards are set higher for mechanical watches.

So just how strict are the Japanese and European standards?

Scooby · 6 February 2007, 06:11 AM

My GMT last week was losing on average about 10 sec per day (53 sec over 5 days), measured using a digital clock linked to the atomic clock. Keep it flat overnight with crystal up.

Reset it and wound it about 50 turns and last night it lost 4 seconds. We'll see how she does over the next week or so.

It is rather old (35-40 years) but it was serviced a little over a year ago by a certified Rolex guy (not an RSC though). I'm not all that anal usually about this, but it is a bother.

25 January 2007, 02:15 AM	#1
BHE Member Join Date: Dec 2006 Location: Ohio Watch: LV Sub Posts: 53	Accuracy Amazing accuracy from an automatic watch. I've been tracking the accuracy of my LV Sub over the past 30 days...it is running +1.7 seconds per day. How fast or slow do your Rolex's run?

25 January 2007, 12:10 PM	#6
Rockrolex TRF Moderator & 2024 SUBMARINER Patron Join Date: May 2005 Real Name: God Location: Washington, D.C. Watch: What do you think? Posts: 37,868	My GMT II runs about > +4 sec./day. That's fine with me. I am not anal about my timekeepers. __________________ Despite the high cost of living, it's still very popular. *Tosser Cabinet Member* Official Member: 'Perpetual 30' Vegas International GTG 2016 Official Member "WIS-CON" Las Vegas International GTG 2017 Official Member "WIS-CON" Las Vegas International GTG 2018 Official Member "WIS-CON" Las Vegas International GTG 2019

25 January 2007, 01:24 PM	#7
A. Jacobs "TRF" Member Join Date: Dec 2006 Real Name: Andrew Location: Ohio Watch: SS Sub Date 16610 Posts: 629	My Sub date averages a 2.4 second loss per day. __________________ Rolex Submariner 16610 "Never underestimate the predictability of stupidity."

25 January 2007, 01:43 PM	#10
mrbieler "TRF" Member Join Date: Nov 2006 Real Name: Jeff Location: Lost Angeles Watch: all about acrylic Posts: 683	I use this web page http://wwp.greenwichmeantime.com/ __________________ - Jeff Cursimus Cum Forfex

25 January 2007, 04:00 PM	#13
henry2703 "TRF" Member Join Date: Jan 2007 Location: too far from HK Posts: 129	0.66 to 0.75 seconds... wow.. what did you use to measure that kind of difference? __________________ If your friend is using numerous strokes to get his ball out of the bunker, don't stand around him and count his strokes.... It's justifiable Homicide.

25 January 2007, 02:19 AM	#2
Dan Pierce 2024 Pledge Member Join Date: Dec 2006 Real Name: D'OH! Location: Kentucky Watch: Rolex-1 Tudor-3 Posts: 36,062	My GMT II is a little less than -1 sec per day. Going to check the monthy rate to get it exact. Gotta love that accuracy! dP

25 January 2007, 02:33 AM	#3
Nine11 Banned Join Date: Dec 2006 Real Name: Mario Location: Annapolis, Md Watch: Z Series SS Sub/Dt Posts: 45	Over 3 weeks now and she is pefect. Learn your watch, if you lay her down on the correct side she will run perfect.

25 January 2007, 11:44 AM	#5
mike "TRF" Member Join Date: Jul 2005 Posts: 22,683	The LV I wear is +2 sec a day.

25 January 2007, 01:31 PM	#8
Blue Bull Banned Join Date: Dec 2006 Posts: 2,887	Whats the reference for "official time" anyway ? Did a search and some of this "time and date sites" vary by 30 secs ... What do you use as the reference for time ?

25 January 2007, 03:50 PM	#12
ROLEX4FD Member Join Date: Dec 2006 Location: San Diego Watch: TT Blue Sub & SDDS Posts: 105	My TT Blue Sub runs between + .66 and + .75 seconds per day - and has been doing since I got her new in June of '06. I couldn't be happier!!

5 February 2007, 04:25 PM	#14
Solo118 2024 Pledge Member Join Date: Jan 2007 Location: USA Watch: Daytona Posts: 6,078	It appears I am losing -2 seconds per day... Is it just me or do most ppl usually GAIN a couple of seconds a day?

6 February 2007, 02:55 AM	#16
nko51 "TRF" Member Join Date: Feb 2007 Real Name: Alex Location: USA Watch: TT Blue Sub Posts: 2,542	My Rolex 14060M runs, +2 seconds per day. My Rolex GMT-Master II, -1 seconds per day. My Rolex Sub Date, +1.5 seconds per day. The chrono range is -4 to +6 seconds per day. .......................--::::--..Rolex Forever..--::::--......................... ...............I KNEEL IN THE LONG SHADOW OF YOUR GREATNESS.............

6 February 2007, 03:37 AM	#18
nikhsub1 Server Advisor Join Date: Oct 2006 Location: LA & NY Watch: 16610LV Posts: 1,118	OK, for the first 3 months or so of my EXP II's life it ran about +1 second a day. Now, for the last 3 months or so it is +8 seconds a day. I'm not happy with that but I don't feel like giving the watch to RSC BH for 2 weeks just to adjust it.

6 February 2007, 06:11 AM	#21
Scooby Member Join Date: Dec 2006 Real Name: Darren Location: Virginia, USA Watch: GMT Posts: 923	My GMT last week was losing on average about 10 sec per day (53 sec over 5 days), measured using a digital clock linked to the atomic clock. Keep it flat overnight with crystal up. Reset it and wound it about 50 turns and last night it lost 4 seconds. We'll see how she does over the next week or so. It is rather old (35-40 years) but it was serviced a little over a year ago by a certified Rolex guy (not an RSC though). I'm not all that anal usually about this, but it is a bother.

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