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Bigron100
·Over a 36 hour period, dial up, the watch has gain 4 secs.
Not Omega, But Opinions Welcome
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Bigron100
·Amplitude drop is larger than normal, and isochronism is larger than normal. Although related, there are somewhat different reasons for both.
Could be a lot of things - to properly diagnose would require having a watchmaker take a look.
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Bigron100
·Archer, what is isochronism ?
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Archer
··Omega Qualified WatchmakerNo, stopping the balance won’t cause this.
It is the ability of an oscillator to keep the same period regardless of the distance travelled. So the ability to keep the same rate when the amplitude drops.
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Bigron100
·Ok, I‘ve just put the Aqua Terra on the Timegrapher, going to see how that fares.
Fully wound and hardly and change on all positions
The Davosa power reserve was up to spec 42 hours before it stopped.
I'm wearing in on the wrist until weekend, I shook it a few time to get it going then gave it five full winds. So we’ll see how it goes.
Fully wound and hardly and change on all positions
The Davosa power reserve was up to spec 42 hours before it stopped.
I'm wearing in on the wrist until weekend, I shook it a few time to get it going then gave it five full winds. So we’ll see how it goes.
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Bigron100
·It's looking like the watch gains when it is dial up and loses with crown up.
After the first 24 hour it is spot on, what is lost during the day on the wrist, it gained at night dial up. See what the nest 24 hours is like.
After the first 24 hour it is spot on, what is lost during the day on the wrist, it gained at night dial up. See what the nest 24 hours is like.
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Bigron100
·Ok, after three weeks of wearing the watch daily and removing it at night, the watch is five seconds fast.
It looks like it never gets fully wound up on the wrist and gains overnight with the face up. It loses most time with the crown up and it loses slightly on the wrist,This seems to balance out to really good timekeeping. However, there is not much reserve left and if I didn't wear every day it would lose a lot time For some reason it seems to lose time even when there is more than six reserve hours left.
Anyway the Timegrapher has been a big help and I've had a bit of fun.
Thanks for all your help.
It looks like it never gets fully wound up on the wrist and gains overnight with the face up. It loses most time with the crown up and it loses slightly on the wrist,This seems to balance out to really good timekeeping. However, there is not much reserve left and if I didn't wear every day it would lose a lot time For some reason it seems to lose time even when there is more than six reserve hours left.
Anyway the Timegrapher has been a big help and I've had a bit of fun.
Thanks for all your help.
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Canuck
·Beat error lever? Is there something I don’t know about these Sellita movements? Perhaps the OP moved the adjustable stud carrier if there is one on these movements?
Thanks, like I said, it's only 18 months old. A while ago I tried to adjust the time by mistakenly moving the beat error lever. The balance wheel stopped for a split second but seemed to have started up again ok.
I've since reset the beat error and looks ok as far as I can see.
I'm going to try it on the wrist over the next few days. I'm waiting for it to stop to see how much reserve it has when fully wound. I wound it 40 full turns, would that be fully wound?
After 31 hours Crown up is at -36/42 secs amplitude is 215 beat error 0.2
Dial up it's - 12/14 secs amplitude 226, beat error 0.0.
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Bigron100
·Ok, just to wrap this up for those who are interested.
The watch gains in the dial up position and loses in the crown up position.
There is about a 25 sec difference. It gains 15 secs and loses 10 secs.
On the wrist it loses slightly, however, it gains about that amount overnight with the dial up. Managing the watch like this I can keep the watch within 5 secs. At the moment, after 5 weeks it's 4 secs fast. I still don’t think there should be such a gap between the dial up and crown up though. And when the reserve is low it loses in both positions. Over a minute with the crown up. Is It wind the watch up fully it pulls this back.
The watch gains in the dial up position and loses in the crown up position.
There is about a 25 sec difference. It gains 15 secs and loses 10 secs.
On the wrist it loses slightly, however, it gains about that amount overnight with the dial up. Managing the watch like this I can keep the watch within 5 secs. At the moment, after 5 weeks it's 4 secs fast. I still don’t think there should be such a gap between the dial up and crown up though. And when the reserve is low it loses in both positions. Over a minute with the crown up. Is It wind the watch up fully it pulls this back.
