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Author Topic: How check if your Automatic Watch is Magnetized.  (Read 8833 times)

Offline sshark

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How check if your Automatic Watch is Magnetized.
« on: December 13, 2009, 11:25:13 AM »
Check out this short video,

http://www.youtube.com/watch?v=pKqlqG13peQ

My sub was running fast these few days and I suspected it is been magnetized. True enuf I put my sub near the compass as shown in the video and the needle did moved a significant angular distance. My the other watch, which was running fast, moved the compass needle by a significant distance. Then come to my 3rd watch, the needle moved a little. My suspect is my watches were magnetized by these cheap china made ear pieces i kept in my drawer. So be careful.

The next question is where do I send to demagnetize them. Any advice?

/lim/
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Offline Alvin-8880

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Re: How check if your Automatic Watch is Magnetized.
« Reply #1 on: December 13, 2009, 12:35:46 PM »
Good sharing, sshark.

Something new to me.
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Offline Scott C.

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Re: How check if your Automatic Watch is Magnetized.
« Reply #2 on: December 13, 2009, 03:21:45 PM »
Lam place can do, remember he has a demagnectise device there!! Maybe can bring to him otherwise walk up to RSC at menara Dior, hopefully they can fix it without leaving your watch there..

Keep us posted how's the process solve this problem ;)


Good luck!!
Scott
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Offline JPSP

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Re: How check if your Automatic Watch is Magnetized.
« Reply #3 on: December 13, 2009, 05:28:50 PM »
you shld be able to collect your watch on the day you send it in to RSC
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Offline sshark

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Re: How check if your Automatic Watch is Magnetized.
« Reply #4 on: December 13, 2009, 07:20:34 PM »
Noted. Thanks.
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Offline sshark

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Re: How check if your Automatic Watch is Magnetized.
« Reply #5 on: December 19, 2009, 02:38:11 PM »
An update

I sent my watches to a local watch technician to demagnetize. My sub now running +2s daily but my seamaster daily rate does not improve. But the compass needle does not deviate as much as last time when I held my compass close to the watches. 
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Offline danny

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Re: How check if your Automatic Watch is Magnetized.
« Reply #6 on: December 19, 2009, 06:26:08 PM »
Quote from: sshark on December 19, 2009, 02:38:11 PM
An update

I sent my watches to a local watch technician to demagnetize. My sub now running +2s daily but my seamaster daily rate does not improve. But the compass needle does not deviate as much as last time when I held my compass close to the watches. 

Is is possible that the difference in performance is due to the fact that the Sub is a certified chronometer?  :)
 :Cheers:
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Offline Fred

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Re: How check if your Automatic Watch is Magnetized.
« Reply #7 on: December 20, 2009, 07:18:40 AM »
great input. need to get my watches checked also...
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Offline sshark

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Re: How check if your Automatic Watch is Magnetized.
« Reply #8 on: December 20, 2009, 12:46:32 PM »
Danny u could be right. Sub is a better and newer movement than my vintage seamaster. Magnetism is 1 of many factors Tat affect a watch accuracy. Probably, inheretly, the seamaster variation is +25/-15s like seiko 5. So +12s daily rate is within specs
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Offline Scott C.

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Re: How check if your Automatic Watch is Magnetized.
« Reply #9 on: December 21, 2009, 05:47:21 AM »
Quote from: sshark on December 20, 2009, 12:46:32 PM
Danny u could be right. Sub is a better and newer movement than my vintage seamaster. Magnetism is 1 of many factors Tat affect a watch accuracy. Probably, inheretly, the seamaster variation is +25/-15s like seiko 5. So +12s daily rate is within specs

i once own the same model (Seamster 300) before and it was running +5 sec/day consistently for 3 months (i was too free to check on it while i was in UK  :D)... not sure is your still mag but i guess it can still be regulated to get better rate...
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Offline chrisyen

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Re: How check if your Automatic Watch is Magnetized.
« Reply #10 on: December 21, 2009, 06:19:51 AM »
Quote from: sshark on December 20, 2009, 12:46:32 PM
Danny u could be right. Sub is a better and newer movement than my vintage seamaster. Magnetism is 1 of many factors Tat affect a watch accuracy. Probably, inheretly, the seamaster variation is +25/-15s like seiko 5. So +12s daily rate is within specs

1st test - put it at same position to test the accuracy ! if it is consistently gaining same faster time.... or everyday +12s at same position!
              congratulations - your watch is ok ! u can ask a watch maker to adjust it for you!

if your watch some time fast some time slow at same position ! then try other position ! if same problem then i believe u need to change some parts...
the hair spring(old hair spring is not as consistent as modern, its magnetic, it can be broke n oxidize over the yrs) , the barrel spring (aged barrel can cause different force....)....... etc
so a complete service is best solution! mean u clean all parts, oil properly.... changed broke parts!
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Offline sshark

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Re: How check if your Automatic Watch is Magnetized.
« Reply #11 on: December 26, 2009, 03:59:17 PM »
An update.

After 2 weeks or so, my sub deviates 2s/day which is consistent and tat is very good. OTH, my Seamaster varies between 13~14s/day (some days are more) when I keep it crown down every night (not wearing it either). I suppose tat is good too because it can be easily rectified.
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