- Posts
- 4,026
- Likes
- 9,069
Winding it backwards?
- Posts
- 100
- Likes
- 85
Z900rsdude
·
Archer is the experienced Omega Guru but I’ve heard also that should your seconds hand goes anti clockwise while you force hacking it causes no damage but obviously don’t keep it held for long and let go when correct sync of seconds.
- Posts
- 4,026
- Likes
- 9,069
redpcar
·My thought is the amount of play or backlash on the center wheel (or whatever wheel the second hand hooks up to).
- Posts
- 28,224
- Likes
- 72,304
Archer
··Omega Qualified WatchmakerMy thought is the amount of play or backlash on the center wheel (or whatever wheel the second hand hooks up to).
There are two different situations...
In a watch like a Speedmaster where the constant seconds is directly driven, you don’t want it to run backwards. The geometry of the escape wheel and pallet fork stones are not meant to go backwards.
On an indirectly driven sweep seconds hand, like in a Cal. 564, it’s possible that the hand moving backwards where it sort of flies backwards as you adjust the time, is the backlash between the drive wheel (third wheel in this case), and the sweep seconds pinion. In this scenario it’s not “ticking” backwards but jumping back several seconds all at once. This is not really a problem...
- Posts
- 464
- Likes
- 718
Gui13250
·There are two different situations...
In a watch like a Speedmaster where the constant seconds is directly driven, you don’t want it to run backwards. The geometry of the escape wheel and pallet fork stones are not meant to go backwards.
On an indirectly driven sweep seconds hand, like in a Cal. 564, it’s possible that the hand moving backwards where it sort of flies backwards as you adjust the time, is the backlash between the drive wheel (third wheel in this case), and the sweep seconds pinion. In this scenario it’s not “ticking” backwards but jumping back several seconds all at once. This is not really a problem...
so, in this case, should I bring it back in order to get the cannon pinion less tight?
- Posts
- 464
- Likes
- 718
- Posts
- 2
- Likes
- 0
Eddie22
·Hello everyone,
I am a proud Speedy Pro owner since 2019, previously only lurking on here and reading posts with great interest.
I have a somewhat related question/problem:
A few days ago I adjusted the time on my Speedy Pro to reflect the daylight saving time and put it back in my watch box.
The next day I picked it up and noticed that I forgot to push the crown back in its default position. Instead it was in its "set time" position for about 20 hours and the second hand had stopped when I picked it up...
I pushed the crown in and it's been running fine since then.
Do I have to be worried about any damage to the movement?
Thank you in advance!
Greetings from Germany
Eddie
I am a proud Speedy Pro owner since 2019, previously only lurking on here and reading posts with great interest.
I have a somewhat related question/problem:
A few days ago I adjusted the time on my Speedy Pro to reflect the daylight saving time and put it back in my watch box.
The next day I picked it up and noticed that I forgot to push the crown back in its default position. Instead it was in its "set time" position for about 20 hours and the second hand had stopped when I picked it up...
I pushed the crown in and it's been running fine since then.
Do I have to be worried about any damage to the movement?
Thank you in advance!
Greetings from Germany
Eddie
- Posts
- 28,224
- Likes
- 72,304
Archer
··Omega Qualified WatchmakerHi @Archer, indeed, in my case scenario, most off the time it is jumping backward « all at once » but once I’ve seen it ticking backward 2 or 3 seconds à fêter junmping and before ticking clockwise again.
so, in this case, should I bring it back in order to get the cannon pinion less tight?
It may loosen up over time, but I would avoid making it actually run backwards.
- Posts
- 28,224
- Likes
- 72,304
Archer
··Omega Qualified WatchmakerHello everyone,
I am a proud Speedy Pro owner since 2019, previously only lurking on here and reading posts with great interest.
I have a somewhat related question/problem:
A few days ago I adjusted the time on my Speedy Pro to reflect the daylight saving time and put it back in my watch box.
The next day I picked it up and noticed that I forgot to push the crown back in its default position. Instead it was in its "set time" position for about 20 hours and the second hand had stopped when I picked it up...
I pushed the crown in and it's been running fine since then.
Do I have to be worried about any damage to the movement?
Thank you in advance!
Greetings from Germany
Eddie
No, you are fine. When you pull the crown out, the parts of the winding system that move the hand when you turn the crown, are moved into a configuration where they are all connected to the crown. The watch stops because now the power in the watch is actually trying to move all those parts as it runs, including turning the crown on the case tube, and there just isn't enough power to do that.
Depending on how tight the seal inside the crown is, some watches may carry on running, and others will stop - neither is doing any harm to the watch.
Cheers, Al
- Posts
- 2
- Likes
- 0
Eddie22
·No, you are fine. When you pull the crown out, the parts of the winding system that move the hand when you turn the crown, are moved into a configuration where they are all connected to the crown. The watch stops because now the power in the watch is actually trying to move all those parts as it runs, including turning the crown on the case tube, and there just isn't enough power to do that.
Depending on how tight the seal inside the crown is, some watches may carry on running, and others will stop - neither is doing any harm to the watch.
Cheers, Al
Happy to hear that nothing was damaged 😀
Greetings
Eddie
- Posts
- 464
- Likes
- 718
- Posts
- 22
- Likes
- 0
PostwarO27
·This morning I just finished a teardown and rebuild of an Omega 351 bumper from the early '50's and it does the same thing when setting the hands in a ccw direction. Pulling the stem out doesn't stop the seconds hand (hack) and it continues to run cw direction, it only stops and backs up a few seconds when turning the crown ccw.
I'm relatively new to the hobby and none of the restores/rebuilds I've done does this with the seconds hand. BUT, this is the first watch I was able to get running again that didn't have a center seconds wheel....it has a seconds pinion and a small spring keeps lateral tension on it so I;m wondering if contact the seconds pinion makes with the center wheel ID is enough to over power the pressure from the spring and the float backwards is the play between the teeth of the pinion and the wheel driving it.
Reading this thread has alleviated my concern that I did something wrong on this build.
I'm relatively new to the hobby and none of the restores/rebuilds I've done does this with the seconds hand. BUT, this is the first watch I was able to get running again that didn't have a center seconds wheel....it has a seconds pinion and a small spring keeps lateral tension on it so I;m wondering if contact the seconds pinion makes with the center wheel ID is enough to over power the pressure from the spring and the float backwards is the play between the teeth of the pinion and the wheel driving it.
Reading this thread has alleviated my concern that I did something wrong on this build.
- Posts
- 2,543
- Likes
- 2,932
kaplan
·"Also turning the hands backwards in time does not create any problems for most watches."
Except for maybe tuning fork watches? i had one turned back in time and it stopped working after that. Noob mistake.
I turned one forwards in time and it was gone, when you turn forwards if there's the moving seconds hand issue I think it might be moving the 300Hz cog too and just dislodging the jewel 🙁
- Posts
- 2,543
- Likes
- 2,932
kaplan
·So basically don't set the time on 300Hz watches, good thing they keep time well, just hack it and wait until time/day matches if need be
