Over Winding??

[LioK]

I've had my ExpII white dial for almost 2 months now and decided to give it the 40 winds (1st time i've done this to my watch). I did this 2 days ago and it seems that my second hand is running like 10 secs faster, on the average, than what it used to.

Is it possible that i have over-wound it? Or is this just normal for the next few days after winding it up, the watch being mechanical and all?

Anyone else experience this?

[triton]

i don't think it is possible to over-wind a watch as most if not all automatic watches have a overwind protection mechanism to prevent breaking mainspring once fully wound

[JJ Irani]

Most modern automatic watches today have a slipping clutch mechanism built in which prevents overwinding of the watch.

Try out the watch for a few days. If you think it's gaining time, try placing it crown DOWN at night and check the results.

Good luck - JJ

[triton]

read somewhere before.

not sure if it is correct.

crown down - lose time
crown up - gain time
face down - maintain time

[LioK]

Thanks JJ. Thanks Triton.

Will try out with the crown down the next few nights and see how it goes.

[Nick Hacko]

[JJ Irani]

Originally Posted by Nick Hacko

Actually ALL automatic watches - vintage and modern - are fitted with "slipping clutch mechanism" (mainspring with no hook at the end plus bit of extra tension spring)

Thanks, Nick!!

[SPACE-DWELLER]

Originally Posted by JJ Irani

Most modern automatic watches today have a slipping clutch mechanism built in which prevents overwinding of the watch.

Try out the watch for a few days. If you think it's gaining time, try placing it crown DOWN at night and check the results.

Good luck - JJ

Originally Posted by triton

read somewhere before.

not sure if it is correct.

crown down - lose time
crown up - gain time
face down - maintain time

In fact it is:

Watch placed horizontally: gain some seconds
Crown down: lose a few seconds
Crown up: lose some more seconds

[Alcan]

Lionel, give this a try.

[alexcord]

I am sure that my new GMT II loses seconds no matter which way I place it at night??!

[SPACE-DWELLER]

Originally Posted by Spacedweller

In fact it is:

Watch placed horizontally: gain some seconds
Crown down: lose a few seconds
Crown up: lose some more seconds

Originally Posted by Alcan

Lionel, give this a try.

Yup, that is the one I was referring to. I am at work again, so couldn't just get it from my "Favourites". I am glad I remembered correctly, though. At the moment, I am experimenting this "watch position" theory out on my Sub Date that gains just under 2 secs a day. But sometimes I have to look that sheet of paper with the info about it up to know what positions is best to have it lose some seconds during the night. I guess I must have memorized it at last!

BTW: I had an interesting talk with Mike about this, and his theory is that the "NEW" 31XX movements have a tendancy to NOT really react to positions whereas the most recent Cal. 3186 GMT seems to have that tendancy.

[triton]

thanks for the correction of placement of watch positions.

[LioK]

Originally Posted by Spacedweller

Yup, that is the one I was referring to. I am at work again, so couldn't just get it from my "Favourites". I am glad I remembered correctly, though. At the moment, I am experimenting this "watch position" theory out on my Sub Date that gains just under 2 secs a day. But sometimes I have to look that sheet of paper with the info about it up to know what positions is best to have it lose some seconds during the night. I guess I must have memorized it at last!

BTW: I had an interesting talk with Mike about this, and his theory is that the "NEW" 31XX movements have a tendancy to NOT really react to positions whereas the most recent Cal. 3186 GMT seems to have that tendancy.

Thanks BO, memory served you right. And thanks ALCAN for the confirmation.
Guess i'll definitely be always checking on the accuracy of the second hand before placing it down for the night.

But what the hell, i've already been keeping up like at least 4 nights a week just to see how many minutes past midnight before the date jumps. So far, fastest is 1min 15secs, and the slowest was 4mins 10secs. From what i have observed, it seems to have to do with the hour and 24-hour hand lining up at midnight before the date jumps. Still trying to correct that.

Come to think of it, should have dealt with the date jump first before taking on this minute and second hand issue.

Any tips on correcting the accuracy on the date jump?

[Nick Hacko]

[alexcord]

Originally Posted by alexcord

I am sure that my new GMT II loses seconds no matter which way I place it at night??!

Any comments?

[Tools]

Originally Posted by alexcord

Any comments?

Sure..

The more modern and smooth running an automatic watch is, the less positional regulating has any affect..

If your brand spanking new GMT II is a couple of seconds slow, consistently, and positional regulation does nothing, you have a very well constructed and balanced time piece.

If it really bothers you, I would wait a few month and see if it "settles down" to something better. Or take a shot at regulation.....they can be zeroed in pretty good if you don't mind a few tries...

[alexcord]

Originally Posted by Tools

Sure..

The more modern and smooth running an automatic watch is, the less positional regulating has any affect..

If your brand spanking new GMT II is a couple of seconds slow, consistently, and positional regulation does nothing, you have a very well constructed and balanced time piece.

If it really bothers you, I would wait a few month and see if it "settles down" to something better. Or take a shot at regulation.....they can be zeroed in pretty good if you don't mind a few tries...

Hi Tools, no I am happy with it's consistency but would just have been a nifty way of maintaining accuracy by changing the way I place it.

I wonder how other new GMT II owners are getting on?

Cheers

Alex

[Tools]

Originally Posted by alexcord

Hi Tools, no I am happy with it's consistency but would just have been a nifty way of maintaining accuracy by changing the way I place it.

I wonder how other new GMT II owners are getting on?

Cheers

Alex

Glad you're happy I would be too.....

You can easily tell if you overwind it...Here is how it looks:

[alexcord]

Originally Posted by Tools

Glad you're happy I would be too.....

You can easily tell if you overwind it...Here is how it looks:

[LioK]

Originally Posted by Nick Hacko

Forget it!

Thanks Nick.
That coming from you means i wouldn't have to worry bout it from now.