Submariner & Accuracy

[Brian Page]

Day 8 with my new Sub C no date and it's only picked up 1 second. Makes me throw out this question : Is the no date historically more accurate that it's other more complicated bothers with date and GMT functions or did I just get a real good one?

I've had several other subs and own a GMT all of which have run within COSC specs better never this accurate.

Anyone else had this experience?

[Evad3]

I am also on day 8 with a brand new Sub ND. Mine's gained around 12 seconds

[Brian Page]

I guess that ends that debate

[kamek]

Originally Posted by Evad3

I am also on day 8 with a brand new Sub ND. Mine's gained around 12 seconds

Originally Posted by Brian Page

I guess that ends that debate

[Choo Yao Chuen]

This is the beauty of Rolex watches.
Its no marketing gimmick when they use the term "precision" timekeeping.

Rolex movements are so well regulated at the right error rate that it will consistently run fast AND slow; over the long term it maintains good timekeeping. Unlike other brands which will normally run at a consistent rate i.e. +3-4 seconds fast, at the end of the month, you would find you watch ahead by a few minutes.

So, I'm not surprise when you you Sub ND is just ahead by 1 second after 8 days. You might want to monitor it on a daily basis to see what Rolex means by "precision timekeeping".

[FTX I]

40 days straight with mine and 14 secs ahead.

[azguy]

Originally Posted by Brian Page

........or did I just get a real good one?

[Ravager135]

Forgetting the accuracy for a second, what a beautiful shot of one of my favorite references.

[padi56]

Originally Posted by Brian Page

Day 8 with my new Sub C no date and it's only picked up 1 second. Makes me throw out this question : Is the no date historically more accurate that it's other more complicated bothers with date and GMT functions or did I just get a real good one?

I've had several other subs and own a GMT all of which have run within COSC specs better never this accurate.

Anyone else had this experience?

No matter the brand or the movement its only as good as what it was regulated too,even simple movements can be regulated to run within a few seconds a day.My best to date was a Chinese Seagull ST19 manual wind chronograph movement cost just $60 for the watch.When tested on the machine timer was running +10 seconds out of the box, after careful regulation ran well inside the Swiss COSC spec.All my wearing watches now I check around every few weeks even then they are less than a minute fast.

[landroverking]

Originally Posted by padi56

No matter the brand or the movement its only as good as what it was regulated too,even simple movements can be regulated to run within a few seconds a day.My best to date was a Chinese Seagull ST19 manual wind chronograph movement cost just $60 for the watch.When tested on the machine timer was running +10 seconds out of the box, after careful regulation ran well inside the Swiss COSC spec.All my wearing watches now I check around every few weeks even then they are less than a minute fast.

I have a chrono with seagull movement. Paid 99$ for it

Keeps really good time.

[padi56]

Originally Posted by landroverking

I have a chrono with seagull movement. Paid 99$ for it

Keeps really good time.

Well IMHO they are great movements the Seagull ST19 manual wind chronograph is based on the old Swiss Venus cal 175.The Chinese bought up the Venus movement tooling rights many many years ago,when the Swiss watch industry was in a state of collapse back in the late 1960s early 1970s.This was down to mainly the onslaught of the Japanese quartz watches and many of the old Swiss movement manufactures were going bust.This why we have ETA today many just had to amalgamate into one business or go bust like many did at this time.Now the Chinese did mod the Venus base movement to give it a higher beat rate plus a longer power reserve its quite amazing how accurate they are.But on the down side they do need to be re-regulate every year or so if you want high anal WIS type accuracy.


The main reason I bought this Alpha watch off flea-bay was mainly for the movement.As I said the movement appeared to be a very much like the Swiss Venus 175. Its a 40mm watch movement 17 jewel manual wind chronograph with quite well finished Incabloc type protection,running at 21,600 BPH,and the Crystal was good quality Acrylic and over-all weight 140 grams power reserve is 42 hours on a full manual wind.


Now lets talk about quality, over-all I was quite impressed with the quality for $60 watch plus $15 for postage.The dial is very crisp even under a 10x loupe,the fonts are very sharp and crisp.The watch comes on a solid link oyster style bracelet with screwed in links.That is very well finished and even lock-tight on the screws.And the case is well polished to a high mirror finish,and all the brushed work is nice and crisp, all the edges are sharp and clean.


Now the movement itself is a Column Wheel chronograph, and nicely decorated with blued screws, pearlage and Geneva stripes,(Hong Kong stripes).All the levers have been polished to a high luster and show little signs of any roughness under 15x loupe,plates and bridges seem to be plated.The gears are brass and have a high smooth finish. I would have expected to see a cheap plastic spacer ring holding the movement in place.But I was totally shocked to see the more traditional case clamps used, like on very much higher priced watches.


Now off to my watchmaker friend and his timing machine,this will sort the men out from the boys.Well the first position we timed was dial up.The graphs banking was pretty well even, and showing + 5.07 seconds per day. Now this is a very good sign, we only ran 100 beats for each run since after 100, the principle of cancelled returns starts to take effect.Next position was logically the dial down position. Notice now that the balance is running very slightly erratic and showing + 8.01 seconds per day .Now crown up, probably the least important position showing + 7.25 seconds daily, and a very even clean graph.Now the most important position crown down, now in this position gravity has it's greatest effect on the balance wheel.I would expect it to speed up a bit,in this position graph shows + 10.21 seconds daily,with a perfect strait line graph,this is excellent considering price of watch.


Overall it was running at just over Chronometer spec at + 7.65 seconds daily,with excellent isochronous.So out of the box its been tested and running very close to COSC specs.Now new watches tend to run a bit fast till the oil circulates around all the moving parts.But all the tests we performed portrayed this movement could quite easily be tuned to run well within COSC specs.And after a week of wearing has settled down to + 5 to + 8 seconds daily,very good for a $65 watch.But after a month and it bit more tweaking got it down to a consistant +4 seconds a day.
__________________

[rmurphy]

Originally Posted by padi56

No matter the brand or the movement its only as good as what it was regulated too,even simple movements can be regulated to run within a few seconds a day.My best to date was a Chinese Seagull ST19 manual wind chronograph movement cost just $60 for the watch.When tested on the machine timer was running +10 seconds out of the box, after careful regulation ran well inside the Swiss COSC spec.All my wearing watches now I check around every few weeks even then they are less than a minute fast.

Well said as usual, my 15 yr old 16610 is always ... No matter when I check him, within a minute of atomic time. I love my watch.


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[sachit]

How do you guys measure that ?

[Cajones]

Originally Posted by sachit

How do you guys measure that ?

Just call the U.S. Naval Observatory Master Clock to set your watches time down to the exact second. Then you can call the same number at any time to see how many seconds you are off (+/-). The phone number is (202)762-1401. I'd also recommend programming it into your phone's contacts for easy access.

[Old Expat Beast]

Originally Posted by kamek

Originally Posted by Cajones

Just call the U.S. Naval Observatory Master Clock to set your watches time down to the exact second. Then you can call the same number at any time to see how many seconds you are off (+/-). The phone number is (202)762-1401. I'd also recommend programming it into your phone's contacts for easy access.

He's in India. That could get expensive.

[Cajones]

Originally Posted by Old Expat Beast

He's in India. That could get expensive.

[FTX I]

Originally Posted by sachit

How do you guys measure that ?

I use time.is

[Dashimmy]

I got a 2 year old 116610LV and it's 2-3 sec slow after 2 weeks. Super Happy!!!

[Brian Page]

Thanks for all the discussion gents - I use time.is as well, going to watch it for a month and see it ends up - love this watch

[drakulie]

I purchased the 114060 a few weeks ago and it runs dead on when I'm not wearing it (when sleeping) or if I'm not working. The moment I start working, it gains time. At first, it was about 10-15 seconds a day, and then day after day the gain in time while wearing it started increasing dramatically to nearly 60 seconds in the 8 hours I was working.

I took it back to the AD, where they checked it and ran some tests and gave me a print out showing it runs perfect. It was also not magnetized. They wanted to send it back the RSC and i told them no way. I wanted to exchange it. They agreed and gave me a brand new one that they had ot special order for me. When they received it, they did their testes in front of me, and it's running perfect.

The moment I took it to work, it gained 22 seconds in those 8 hours. Today, during work, it has gained another 13 seconds (so far),

What gives??? Any help/suggestions would be appreciated. I'm getting ready to return it and get my money back.

Why would it run perfect while on my night stand or if I'm not working, yet the moment I start working, it begins to run fast and gain.

BTW, I'm a profesional racquet technician. String racquets, customize, etc. There is no crazy or violent movements being made while I do my work.

[FTX I]

Originally Posted by drakulie

I purchased the 114060 a few weeks ago and it runs dead on when I'm not wearing it (when sleeping) or if I'm not working. The moment I start working, it gains time. At first, it was about 10-15 seconds a day, and then day after day the gain in time while wearing it started increasing dramatically to nearly 60 seconds in the 8 hours I was working.

I took it back to the AD, where they checked it and ran some tests and gave me a print out showing it runs perfect. It was also not magnetized. They wanted to send it back the RSC and i told them no way. I wanted to exchange it. They agreed and gave me a brand new one that they had ot special order for me. When they received it, they did their testes in front of me, and it's running perfect.

The moment I took it to work, it gained 22 seconds in those 8 hours. Today, during work, it has gained another 13 seconds (so far),

What gives??? Any help/suggestions would be appreciated. I'm getting ready to return it and get my money back.

Why would it run perfect while on my night stand or if I'm not working, yet the moment I start working, it begins to run fast and gain.

BTW, I'm a profesional racquet technician. String racquets, customize, etc. There is no crazy or violent movements being made while I do my work.

My Sub-C Date was like that for 3 or 4 months when I got it. I waited patiently, and after about 5 or 6 months it was +1 each day.

[Andad]

Originally Posted by drakulie

I purchased the 114060 a few weeks ago and it runs dead on when I'm not wearing it (when sleeping) or if I'm not working. The moment I start working, it gains time. At first, it was about 10-15 seconds a day, and then day after day the gain in time while wearing it started increasing dramatically to nearly 60 seconds in the 8 hours I was working.

I took it back to the AD, where they checked it and ran some tests and gave me a print out showing it runs perfect. It was also not magnetized. They wanted to send it back the RSC and i told them no way. I wanted to exchange it. They agreed and gave me a brand new one that they had ot special order for me. When they received it, they did their testes in front of me, and it's running perfect.

The moment I took it to work, it gained 22 seconds in those 8 hours. Today, during work, it has gained another 13 seconds (so far),

What gives??? Any help/suggestions would be appreciated. I'm getting ready to return it and get my money back.

Why would it run perfect while on my night stand or if I'm not working, yet the moment I start working, it begins to run fast and gain.

BTW, I'm a profesional racquet technician. String racquets, customize, etc. There is no crazy or violent movements being made while I do my work.

Which server are you using for your sync and what is your method for time checking?

[drakulie]

Originally Posted by directioneng

Which server are you using for your sync and what is your method for time checking?

Time.gov

I check in the morning when I wake, at end of day at work, and then when I go to bed.

When I wake, it hasn't gained or lost any time.
When I finish work it has gained so far this week, 22, 14, and 16 seconds respectively.

When I go to bed it hasn't gained/lost any time since finishing work.

[MovieGuy]

Originally Posted by drakulie

When they received it, they did their testes in front of me, and it's running perfect..

Now I've heard of every way to make a watch run more accurately!!

[Fabrice M]

My GMT II 16710 gain about a sec.per week as well.
I haven't timed my 114060 yet. I just synched it with my mac clock, will report in a couple of days.

[F308gt4]

I last set my SubC date on Nov 1st. On Dec 1st it was 1 second fast. Just checked on time.gov and I am currently spot on. Not bad.

[busytimmy]

My Sub is often within 5-10 seconds after a couple of weeks. That's good enough for me.

[jhamiltonwa]

I'm into week 3 with my 114060 and it's about 13 secs a week fast. I put it crown down when I take it off at night. I suspect it gains more time on my wrist than on the bedside table.


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[skprd13]

Not a Rolex, however my Blue Omega SMP has been running now for 82 days and she is running 2.5 secs fast for the 82 days. Watch was serviced last year by Rikki. Very happy with the results.
Aloha from Kauai,
Tom

[GradyPhilpott]

Regulation, regulation, regulation.