What's your accuracy?

Discuss Christopher Ward watches
JasperCat
Senior Forumgod
Senior Forumgod
Posts: 1335
Joined: Tue Oct 17, 2017 10:43 am
CW-watches: 6

Re: What's your accuracy?

Post by JasperCat »

Deks wrote: Tue Aug 17, 2021 2:04 am I've given up trying to understand the accuracy of my CW automatic watches. They are creatures with a life of there own. One day they are within 5 secs of when set to then a day later they are 30 sec's slow as an example. I would say you need to wear them for the best way to get the best average accuracy
I used to find the same, with the watches listed above, which are the ones I wear in rotation.

I then started using winders for the automatics and keeping the hand wind watches fully wound (almost) every day (even though being SH21 they could run for days).

Doing this, the accuracy is eerily constant over many months now :thumbup:
C1 - Bel Canto, Grand Malvern 5 Day
C5 - FLE
C65 - Cranwell, Super Compressor
C9 - 5 Day Small Seconds
Omega - Aqua Terra, SMP Nekton
Breitling - SuperOcean
Rolex - Air King
User avatar
Amor Vincit Omnia
Moderator
Moderator
Posts: 33910
Joined: Sat Jun 11, 2011 7:34 pm
CW-watches: 4
Location: Norfolk, UK

Re: What's your accuracy?

Post by Amor Vincit Omnia »

^^^ I’ve always had this theory that watches perform best when they are kept running and are worn. If a watch has been sitting in a box for a long time it always seems to take a day or 2 to get back to optimal performance, and actually wearing the watch tends to eliminate the positional variations incurred by leaving it in one position even if it is wound.

It’s one reason why I have taken to wearing each of my watches for a week or more. And another justification for the idea that we probably have too many watches.
Steve
Linguist; retired teacher; pilgrim; apprentice travel writer

Take nothing but pictures, leave nothing but footprints, kill nothing but time


Avoid loud and aggressive persons; they are vexatious to the spirit. (Max Ehrmann)
Andy Porter
Posts: 4
Joined: Thu Aug 19, 2021 11:58 am

Re: What's your accuracy?

Post by Andy Porter »

My C60 Elite 1000 is in for the 3rd time this year after starting the lose 5 mins/week. Not great for a COSC movement. Second time in, the movement wasn't fixed but the pressure gasket had failed durimg the fix and moisture was inside the watch. This was while being worn all day and taken off to sleep.
Currently wearing a 1966 1016 Explorer than didn't need winding, picked up as the time matched my mobile, and has lost 60 secs over 3 weeks.
Southfrance
Junior
Junior
Posts: 59
Joined: Fri Jul 07, 2023 7:34 am

Re: What's your accuracy?

Post by Southfrance »

Sorry to dredge up an old thread. I have been checking my c60 sapphire for accuracy and it seems to hover around -10s/day. Now I know its within spec but just curious as all the posts ive read seem to be plus numbers. Is it just pot luck that mine runs slow. I’m not worried , just interested to hear from you knowledgable folks.
User avatar
Amor Vincit Omnia
Moderator
Moderator
Posts: 33910
Joined: Sat Jun 11, 2011 7:34 pm
CW-watches: 4
Location: Norfolk, UK

Re: What's your accuracy?

Post by Amor Vincit Omnia »

@Southfrance As long as the rate of your watch is consistent you can set it accordingly. Set it 35s fast on Sunday and by the next Sunday it should be 35s slow. Unless you want spot-on accuracy, of course.

I started a thread on this a while ago
Steve
Linguist; retired teacher; pilgrim; apprentice travel writer

Take nothing but pictures, leave nothing but footprints, kill nothing but time


Avoid loud and aggressive persons; they are vexatious to the spirit. (Max Ehrmann)
Southfrance
Junior
Junior
Posts: 59
Joined: Fri Jul 07, 2023 7:34 am

Re: What's your accuracy?

Post by Southfrance »

Amor Vincit Omnia wrote: Mon Dec 04, 2023 6:55 pm @Southfrance As long as the rate of your watch is consistent you can set it accordingly. Set it 35s fast on Sunday and by the next Sunday it should be 35s slow. Unless you want spot-on accuracy, of course.

I started a thread on this a while ago
Cheers for the advice, I read the link, my eyes went a bit crossed but i get your point. As i said, not really worried about the accuracy just why minus or plus x amount per day.
User avatar
Bahnstormer_vRS
Moderator
Moderator
Posts: 35312
Joined: Thu Sep 06, 2012 3:06 pm
CW-watches: 34
LE-three: 1
LE-foura: 1
LE-fourb: 1
LE-six: 1
Location: Hertfordshire, UK

Re: What's your accuracy?

Post by Bahnstormer_vRS »

@Southfrance

Like many, most of my watches run 'plus' but my C60 Anthropocene GMT runs 'minus'; about 10 sec/day like your C60 Sapphire.

Guy
In small proportions, we just beautie see:
And in short measures, life may perfect bee. - Ben Jonson (1572 – 1637)

Inscription on the Longitude Dial
Hatfield House, Hatfield, Hertfordshire AL9 5NB, England
rsg
Newbie
Newbie
Posts: 23
Joined: Tue Aug 01, 2023 1:56 pm

Re: What's your accuracy?

Post by rsg »

Southfrance wrote: Mon Dec 04, 2023 6:29 pm Sorry to dredge up an old thread. I have been checking my c60 sapphire for accuracy and it seems to hover around -10s/day. Now I know its within spec but just curious as all the posts ive read seem to be plus numbers. Is it just pot luck that mine runs slow. I’m not worried , just interested to hear from you knowledgable folks.
If you don't wear it at night try finding a position where it is less slow, or fast. e.g. try crown down, crown up etc
These users thanked the author rsg for the post:
rkovars
aa_bcfc.
Junior
Junior
Posts: 57
Joined: Tue Jan 03, 2023 4:37 pm
CW-watches: 1
Location: WsM

Re: What's your accuracy?

Post by aa_bcfc. »

I love my c63 Sealander automatic. However it’s the most inaccurate watch I own. It runs at more than +10s/day, despite that being within spec it bugs me. I have other Sellita movement watches from 2xSinn, 2xHanhart & Oris which run much more accurately as do my 2xLongines & Mido with the powermatic 80.
rsg
Newbie
Newbie
Posts: 23
Joined: Tue Aug 01, 2023 1:56 pm

Re: What's your accuracy?

Post by rsg »

aa_bcfc. wrote: Sat Dec 09, 2023 6:54 pm I love my c63 Sealander automatic. However it’s the most inaccurate watch I own. It runs at more than +10s/day, despite that being within spec it bugs me. I have other Sellita movement watches from 2xSinn, 2xHanhart & Oris which run much more accurately as do my 2xLongines & Mido with the powermatic 80.
Have you tried
a) finding a overnight rest position that runs slower than on your wrist?
b) demagnetised it - I'd not recommend doing this without a timegrapher as it may take a few goes to get it just right.

My C63 Sealander was getting close to 12spd and like yourself I was a bit irritated by it. I bought an Etac demag tool and a Timegrapher so I could instantly see the results. The position of the watch on the Etac during demag is quite critical as is following the Etac instructions.
I now have 4-5spd which is within COSC specs.

With the timegrapher it's also easy to find a suitable overnight rest position which in my case is 7H.
:D
clsflrn
Newbie
Newbie
Posts: 8
Joined: Mon Mar 06, 2023 10:09 pm

Re: What's your accuracy?

Post by clsflrn »

rsg wrote: Sat Dec 09, 2023 8:15 pmWith the timegrapher it's also easy to find a suitable overnight rest position which in my case is 1H.
:D
Excuse my ignorance, but which position is '1H'?
rsg
Newbie
Newbie
Posts: 23
Joined: Tue Aug 01, 2023 1:56 pm

Re: What's your accuracy?

Post by rsg »

clsflrn wrote: Sat Dec 09, 2023 9:03 pm
rsg wrote: Sat Dec 09, 2023 8:15 pmWith the timegrapher it's also easy to find a suitable overnight rest position which in my case is 1H.
:D
Excuse my ignorance, but which position is '1H'?
Apologies it's 7H (7 o'clock up).
User avatar
nbg
Senior Forumgod
Senior Forumgod
Posts: 13218
Joined: Sun Nov 24, 2013 6:43 pm
CW-watches: 14
Location: UK

Re: What's your accuracy?

Post by nbg »

+/- 0 seconds after almost six weeks. At no stage during that period has it ever exceeded +2.

Neil
Other watch forums of interest:
TZ-UK
Southfrance
Junior
Junior
Posts: 59
Joined: Fri Jul 07, 2023 7:34 am

Re: What's your accuracy?

Post by Southfrance »

Anyone know a good app or method to check accuracy, I’ve been using an app called TWELVE ,but it seems a bit all over the place , with wildly varying results. I set my watch 3 days ago and tonight, after 3 days , its 1min 40s slow.
User avatar
Bahnstormer_vRS
Moderator
Moderator
Posts: 35312
Joined: Thu Sep 06, 2012 3:06 pm
CW-watches: 34
LE-three: 1
LE-foura: 1
LE-fourb: 1
LE-six: 1
Location: Hertfordshire, UK

Re: What's your accuracy?

Post by Bahnstormer_vRS »

^^^^ Watch Accuracy Meter

Image


Guy

Sent from my Galaxy S23 Ultra using Tapatalk




In small proportions, we just beautie see:
And in short measures, life may perfect bee. - Ben Jonson (1572 – 1637)

Inscription on the Longitude Dial
Hatfield House, Hatfield, Hertfordshire AL9 5NB, England