Timekeeping

[bobby81]

I would like to share a bit of knowledge I picked up from the forum. My Watches were running 5/6 seconds a day fast & with Rolex stating that their new Watches were accurate to within +2/-2 a day I was a little worried to say the least so I asked the forum for help & someone gave me this advice. He said it all depends on which position you leave your Watches so I tried a few positions & to my amazement I found a position where my Watches were even keeping time better than the +2/-2 a day. So if you find your new Watch losing or gaining time which to the point has you worried try this before you think it might be time to leave them in for a service. I guarantee you this works

[DramaTurtle]

Indeed.

Here is the famous piece of written advice straight from the source:

[AJM914]

[bobby81]

Originally Posted by DramaTurtle

Indeed.

Here is the famous piece of written advice straight from the source:

Thank you your advice was spot on though the advice in the text above wasn't the one I used it was the advice you gave me before you posted this text but it amounts to the same thing it goes by position

[Old Expat Beast]

It works better with the older Rolex movements than the new ones, which is probably why Rolex stopped including that info with their watches many years ago. It still works very well with Tudor/ETA, though.

[padi56]

Originally Posted by bobby81

I would like to share a bit of knowledge I picked up from the forum. My Watches were running 5/6 seconds a day fast & with Rolex stating that their new Watches were accurate to within +2/-2 a day I was a little worried to say the least so I asked the forum for help & someone gave me this advice. He said it all depends on which position you leave your Watches so I tried a few positions & to my amazement I found a position where my Watches were even keeping time better than the +2/-2 a day. So if you find your new Watch losing or gaining time which to the point has you worried try this before you think it might be time to leave them in for a service. I guarantee you this works

No what Rolex states they are tested to a precision of-2+2 seconds what does this mean.Well in the real world Rolex now re-regulates the movement in its case on timing machine,and at time of testing movement passed said spec.But on the wrist thats a different matter,seeing the movement is effected by gravity positions, metal expansion and contraction, temperature variations,mainspring power-reserve, subtle changes in lubrication and friction, shocks, and so on.

[rafi_16610]

what I've noticed with the 3135 on my 16610 is positional changes are compensated for pretty quickly. from dial down at +1, i rotated the clamp to dial up, it changed momentarily (a second? maybe not even) to +2 then settled back to +1. i tried the same with my Breitling B10050 (ETA 2892-A2) and more than 10 sec. lapsed from position change before the 2892 settled to its regular (dial down) of +4 sec. tried it too with a '66 pie pan (cal. 561, one of Omega's most iconic). also took more than 10 sec before reverting to its original rate.

Sent from my B15Q using Tapatalk

[bobby81]

Well as I said I just tried one position on Tuesday I think & I checked the time last night & in them couple of day's my Watches were accurate to within a second

[Shaky]

Funnily enough for the first time ever I decided to check the accuracy of the watch I am currently wearing, an Omega PO2500 with ETA movement. I got it as gaining around 5 secs over 24 hrs. I was aware of that picture which I think Old Expat had put on the forum a while ago, I tried it for the first time last night....Crown down. It hasn't bought it back in as much as I want so tonight I will be trying crown up and see where that takes me.

Info like that is just golden and thanks to this forum and the knowledgeable lot you all are every day is a learning day.

[Friar]

Every watch will be a bit different and as Adam said, the Rolex info is no longer included with more modern watches. I have an Omega SMPc with the 2500D movement. It will lose time if left face up or crown up over night. In all other positions, it will gain time. YMMV

[jinikari01]

Originally Posted by Old Expat Beast

It works better with the older Rolex movements than the new ones, which is probably why Rolex stopped including that info with their watches many years ago. It still works very well with Tudor/ETA, though.

This is true as I tried to slow or loss few sec. on my 2016 gmtii C, I followed both instructions and it hasn't made any changes on my watch.

[Mystro]

I am a accuracy super freak. The new Rolex movements are affected very little by their resting positions. A fraction of what their older movements would be. That said, they are affected but you must be very precise in your measurements to notice. It could be .25 to .50 seconds a night.

[bobby81]

Originally Posted by Mystro

I am a accuracy super freak. The new Rolex movements are affected very little by their resting positions. A fraction of what their older movements would be. That said, they are affected but you must be very precise in your measurements to notice. It could be .25 to .50 seconds a night.

I disagree I have both the Sub 116613LB & The Daytona 116503 both are new Watches & as I say were gaining 5/6 seconds overnight I like my Watches to be as accurate as possible. I just wound them again last night & was the case previous they are spot on nether gaining or losing time