question for the experts on movements!

[pittster]

My new DSSD runs spot on accurate to the second when on my wrist throughout the day. no loss or gain whatsoever.

My problem is when I put it by my bedside at night, no matter which position I leave it in, it always loses at least 5 secs overnight.
If I leave it unworn for >24 hrs it is well out of chronometer spec.

I have left it on the watch winder too, and it still loses time, but never loses/gains when on my wrist

Is there a problem with the movement? I have never experienced this before on a Rolex calibre movement.

thanks for any suggestions/ideas.

[rilu]

you should visit the thread called "GMT IIc - RANT". they talk about this issue a little bit there, you might get some good sugestions from it.

[C. Davidson]

The following link will direct you to it:

http://www.rolexforums.com/showthread.php?t=53697

[padi56]

Originally Posted by pittster

My new DSSD runs spot on accurate to the second when on my wrist throughout the day. no loss or gain whatsoever.

My problem is when I put it by my bedside at night, no matter which position I leave it in, it always loses at least 5 secs overnight.
If I leave it unworn for >24 hrs it is well out of chronometer spec.

I have left it on the watch winder too, and it still loses time, but never loses/gains when on my wrist

Is there a problem with the movement? I have never experienced this before on a Rolex calibre movement.

thanks for any suggestions/ideas.

No mechanical movement any brand is going to be spot on accurate close yes spot on no.There will always be slight daily deviations,as your watch is new give around a month maybe two to let the movement bed in.After that if your watch is performing to the COSC spec -4 + 6 seconds a day all is fine.IF out of COSC have it regulated Constancy is the most important thing with any mechanical watch.So if any watch is say 20 seconds fast or slow every day its a very accurate watch and all thats needed is slight regulation to bring it back into COSC spec.

[pittster]

thanks for the link.

seems to be a lot of conflicting info with no real commonality amongst the posts.

I know there is no such thing as a spot-on accurate automatic watch, but the thing I have never seen before in any of my previously owned Rolexes is the fact it runs beautifully during the day on my wrist, but loses time well out of spec during just one night.

suspect it'll have to go back to Bexley for a checkup

[C. Davidson]

Sorry to hear that. Each mechanical movement is unique and each will have very unique rate results. Sounds like a visit to the service center will be in order for you.

[rilu]

Originally Posted by pittster

thanks for the link.

seems to be a lot of conflicting info with no real commonality amongst the posts.

I know there is no such thing as a spot-on accurate automatic watch, but the thing I have never seen before in any of my previously owned Rolexes is the fact it runs beautifully during the day on my wrist, but loses time well out of spec during just one night.

suspect it'll have to go back to Bexley for a checkup

theres no real commonality because we are all rolex geeks, alot of what we say is what we have learned from magazines, what expert people have told us or what we learned on this site. the only people that can answer some of these questions without a doubt is a master watchmaker from rolex.

[Quicksilver]

I have just spotted the same problem on my new Sub (under 3 weeks old).

For the first 2 weeks it ran consistently 1 - 1.5 secs slow per day. Ok with me. For the past 2 days for some reason it has run 4 secs a day slow which is a big difference.

So I am going to watch it over the next few weeks then see about getting it regulated.

I lost my temper with my computer this weekend and banged my fist down hard on the desk (pretty stupid). I worried that the shock to my watch might have upset something - but then these watches are robust and people wear them playing hard sports like tennis, so I am sure it can't be this. But it was after this that it lost about 3 seconds a day

[pittster]

Originally Posted by Quicksilver

I have just spotted the same problem on my new Sub (under 3 weeks old).

For the first 2 weeks it ran consistently 1 - 1.5 secs slow per day. Ok with me. For the past 2 days for some reason it has run 4 secs a day slow which is a big difference.

So I am going to watch it over the next few weeks then see about getting it regulated.

I lost my temper with my computer this weekend and banged my fist down hard on the desk (pretty stupid). I worried that the shock to my watch might have upset something - but then these watches are robust and people wear them playing hard sports like tennis, so I am sure it can't be this. But it was after this that it lost about 3 seconds a day

that is still running within SCOC parameters though.

Most ADs and Rolex Service Centres won't regulate unless its running out of spec(> -4 secs/day)

[Quicksilver]

Originally Posted by pittster

that is still running within SCOC parameters though.

Most ADs and Rolex Service Centres won't regulate unless its running out of spec(> -4 secs/day)

Its the sudden discrepancy that gets me though - why suddenly drop from a good -1.5 to a mediocre -4.

As for the Service Centre regulating it, you could be right so I will need to check with them. I think I will want it regulated to run a bit faster - I would have thought they would do this as service during the guarantee period but if necessary I would be prepared to pay for the service.

[pittster]

or just say to them that its running -5 secs/day and they'll do it for free. how would they know its only -4 ??

[Quicksilver]

Originally Posted by pittster

or just say to them that its running -5 secs/day and they'll do it for free. how would they know its only -4 ??

Good idea

[Jedi]

All those parameters are within tolerance. -5 overnight is withing specs as COSC's +6/-4 is over a 24 hour period.

And they will know how it's running once the watch is set on a vibrograph and they examine the differences between positions.

[padi56]

Originally Posted by Quicksilver

Its the sudden discrepancy that gets me though - why suddenly drop from a good -1.5 to a mediocre -4.

As for the Service Centre regulating it, you could be right so I will need to check with them. I think I will want it regulated to run a bit faster - I would have thought they would do this as service during the guarantee period but if necessary I would be prepared to pay for the service.

David even a change in temperature can effect mechanical watches to a small degree.And there will always be a slight deviation almost daily thats the fact of a mechanical watch.As long as your watch is running inside or say slightly outside occasionally the COSC spec your watch is fine and nothing to worry about.And if you did have it regulated it don't necessarily mean it will perform the same on your wrist as tested on the machine.

[padi56]

Originally Posted by pittster

or just say to them that its running -5 secs/day and they'll do it for free. how would they know its only -4 ??

Quite easy they test them first on a Vibrograf timing machine it calculates amplitude of oscillation, daily rate, beat error, positional error and much more.

[Quicksilver]

Originally Posted by padi56

David even a change in temperature can effect mechanical watches to a small degree.And there will always be a slight deviation almost daily thats the fact of a mechanical watch.As long as your watch is running inside or say slightly outside occasionally the COSC spec your watch is fine and nothing to worry about.And if you did have it regulated it don't necessarily mean it will perform the same on your wrist as tested on the machine.

Thank you Padi. I thought I may have bewen overeacting

We have all been spoilt by Quartz accuracy and many of us are simply not used to the eccentricities of a mechanical watch. I guess its those eccentricities that give theim their character.

[Tools]

On the DSSD, it should not have any more peculiarities than any other 3135 equipped Rolex..

But, I am curious how you are going about checking your accuracy.. I don't believe that you can say that it is running 1 to 1.5 when you wear it, then 5 overnight..

Movement accuracy is based on a daily average, so wearing it for 8 hrs and saying it is 1.5 off, then isn't it actually 4.5 off in 24 hrs.. Or, saying 5 off at night (again say 8 hrs), wouldn't that make it 15 seconds off in a day.. and how did you check.... Did it get set exactly to a standard time-source when you put it down, then again checked with that very same time source upon awakening..

We really need to get to the bottom of this..

First....What is the time-standard used.. WWV, Time.gov, Accurist, Naval Observatory ? .... There are only a couple that are truly standards, and the same one should always be used because there is variation between standards (a computer is not a standard, neither is your cell phone or your quartz watch)

Accuracy is an average and should be taken over a full week, using the exact same known standard, then divided by the days to get a close approximation. This is valuable information for your watchmaker to be able to set the watch to your wearing habits..

Remember, a worn watch will almost always run faster than one left overnight because the movement of your wrist will cause the balance to "shorten up" it's swing more often than one without movement.

[pittster]

Originally Posted by Tools

On the DSSD, it should not have any more peculiarities than any other 3135 equipped Rolex..

But, I am curious how you are going about checking your accuracy.. I don't believe that you can say that it is running 1 to 1.5 when you wear it, then 5 overnight..

Movement accuracy is based on a daily average, so wearing it for 8 hrs and saying it is 1.5 off, then isn't it actually 4.5 off in 24 hrs.. Or, saying 5 off at night (again say 8 hrs), wouldn't that make it 15 seconds off in a day.. and how did you check.... Did it get set exactly to a standard time-source when you put it down, then again checked with that very same time source upon awakening..

We really need to get to the bottom of this..

First....What is the time-standard used.. WWV, Time.gov, Accurist, Naval Observatory ? .... There are only a couple that are truly standards, and the same one should always be used because there is variation between standards (a computer is not a standard, neither is your cell phone or your quartz watch)

Accuracy is an average and should be taken over a full week, using the exact same known standard, then divided by the days to get a close approximation. This is valuable information for your watchmaker to be able to set the watch to your wearing habits..

Remember, a worn watch will almost always run faster than one left overnight because the movement of your wrist will cause the balance to "shorten up" it's swing more often than one without movement.

all I know is that I wear it for 12 hours, and it loses/gains virtually nothing.
I then put it down for approx 8 hrs overnight and it loses at least 5 seconds, I then put it back on the wrist for the day and it loses/gains nothing, then down for the night... and so on and so on....
Thats using www.timeanddate.com to measure accuracy which is very accurate.

I'm off work for 9 days coming up very soon, so will wear it all the time except for sleeptime over the 9 days and see what the gain/loss comes to at the end.

[Jocke]

Originally Posted by pittster

My new DSSD runs spot on accurate to the second when on my wrist throughout the day. no loss or gain whatsoever.

My problem is when I put it by my bedside at night, no matter which position I leave it in, it always loses at least 5 secs overnight.
If I leave it unworn for >24 hrs it is well out of chronometer spec.

I have left it on the watch winder too, and it still loses time, but never loses/gains when on my wrist

Is there a problem with the movement? I have never experienced this before on a Rolex calibre movement.

thanks for any suggestions/ideas.

That watch should be with your false teeths under water at the night to be accurate.



Jocke

[JohnEaton]

I've found that this is the most accurate caliber:



Hows does 8 inches at a mile sound ???

[Redknapp]

My Yacht Master Platinum has recently started running fast by approx 20 seconds a day.

I purchased the watch in Apr 08 and it kept perfect time (or good enough for me not to notice) up until August. This month witnessed the birth of my first child and as such my watch spent some time on the sidelines.

It was during this period that I first noticed it would stop after about 36hrs of not being worn and it was this that lead me to the forum. Knowledge gleaned here put my mind at rest and I'm hoping that someone can do the same again.

Having searched various threads and reading the FAQ's it would appear that +/- 20 seconds is above and beyond the norm. The watch is still under warranty, to this end, is it possible that I have a faulty one that I should look to have replaced while the warranty exists or will a simply recalibration cure the issue?

If the latter, how long does this process take at an AD? I’m going away on holiday in a couple of weeks and I’d hate to be removed from my precious whilst away.

Thanks in advance.

[Lol-x]

If you are in New York take it to the Rolex Service Center with your warranty card/paper.

They might time your watch while you wait. In any event, it should not be 20 seconds out per day and you will get it fixed for free

[springer]

The older Rolex owner manuals explained to new owners that they were able to regulate their watch by how you placed it on the bedstand at night. Face-up, face-down or on its side affected the accuracy of the watch. The manual directed you to place the watch in one of these specific positions based on whether the watch was running fast or slow. By so doing, based on the position, the watch would slow down or speed up and self-regulate.

[Z-Sub]

Originally Posted by Redknapp

My Yacht Master Platinum has recently started running fast by approx 20 seconds a day.

I purchased the watch in Apr 08 and it kept perfect time (or good enough for me not to notice) up until August. This month witnessed the birth of my first child and as such my watch spent some time on the sidelines.

It was during this period that I first noticed it would stop after about 36hrs of not being worn and it was this that lead me to the forum. Knowledge gleaned here put my mind at rest and I'm hoping that someone can do the same again.

Having searched various threads and reading the FAQ's it would appear that +/- 20 seconds is above and beyond the norm. The watch is still under warranty, to this end, is it possible that I have a faulty one that I should look to have replaced while the warranty exists or will a simply recalibration cure the issue?

If the latter, how long does this process take at an AD? I’m going away on holiday in a couple of weeks and I’d hate to be removed from my precious whilst away.

Thanks in advance.

My wife's DJ did the same. Out of the blue started to gain time. sent to Rolex Beverly Hills and was told it was magnetized.
it's back and running 2 sec slow just like when we first got it in July.
Still can't think of what caused the watch to get magnetized.