I've been on youtube since its inception. I'm not into watches. This is the best video that I've watched in all of TH-cam. Informative, to the point, no fillers, speaks clearly, knowledged, clear video. Thank you very much.
Brilliant explanation! I accidently changed the date at the wrong time on a new watch and freaked out. It still works, and like someone else said, calmed me down enough to know I didn't break anything. After seeing this I will definatly be more careful with the date setting from now on. Thank you. This was really helpful and Interesting.
I just got my first automatic and out of the box the time was set at around noon or 11:30, it was also date transitioning. I went to pull to second position to change time and going through the first position the crown shifted the date as I pulled it out, now I’m kinda freaking out.
I did it too last week. I'm still new to automatic watches and I was dumb not to read the manual. I turned the crown a few times at 12 pm to change the day. I got so worried that I might brake the day&date that I have been keeping an eye on the day&date change ever since. What I've noticed is that the date changes inconsistently, sometimes at 23:57, sometimes at 23:56. Not sure about the day though, because I always fall asleep right after I watch the date change. Does this mean it's broken?
This is of course very informative, but what I love most about this video is how you manage to make it really fascinating showing us how these mechanical things interact, and how fragile parts of this machinery really can be. I've just recently discovered your channel, and are going through your Watch and Learn vids. So far, this was the most fascinating one. Great job!
That was super interesting! I'd love to see a video on why it's not recommended to set the time by turning the hands counter-clockwise, how that affects the day/date, and why the second hand jumps around on cheaper movements. Also, how do some of the instant date-change mechanisms work, and can they be broken in a similar way, like say, between 11:59 and 12:01 or something? This is a great series.
Cool video. It's a terrible engineering/design flaw. An end user shouldn't be able to destroy a watch by turning the crown. Imagine destroying your television by pressing a button on the remote. You need to design products to be idiot proof.
you sould try this maybe. start your car, keep in in park or neutral, then press the petal until it hits the rev limiter. now this is the important part, keep it there until you engine blows up.
Excellent. Taking an automatic watch apart always seemed so difficult to do. You couldn't have done a better description of what's involved. The best channel for learning about the inner makings of a timepiece. I thank you for spreading your knowledge on a subject few would even try. Keep them coming, I've learned more from your channel then any manuals could show you. Another great video from Long island watch company. Do you sell a repair kit, or recommend a repair kit that would allow me to strip down an automatic watch to make these kinds of repairs. Thanks for your time, Rob
Thank you for this informative video Marc. For me, this basic Seiko movement is already a piece of ingenious creation. Now, just imagine something like annual calendar, moonphase or other mechanical marvels!
Thank you so much this gave me peace of mind because I didn't know about the danger zone and I set the day on my Seiko 5 during 1:30am when the day is already showing the 2nd language (Spanish). I didn't feel anything being forced and everything runs smoothly.
Great. I was actually lucky and changed my day and date on my Seiko Sports 5 SRPD51K2 during the safe period.......before reading the manual.. I felt lucky when I found this information AFTERWARDS! I now know...thanks for the video!
This has been one of the best if not the actual best watch and learn videos, I've seen so far, i did change the day and date on my Seiko 5 when i first got it and it was near enough midnight by the time i was able to get the watch out of the box and set it up and of course I didn't read this manual so i set the time then the day/date, i was horrified when i saw that i wasn't supposed to do that and bloody relieved when i saw that i hadn't damaged my lovely new watch that i had to save for almost a year to buy, damn lucky.
Thank you SO much Marc! I made the same mistake as some of the others and was worried sick that I had damaged the mechanism. Amazing to see what is going on 'under the hood'. No damage done!
Pure knowledge for me, absolutely great. Thank You Sir ⏱⌚️ I usually do one way "full circle" when setting my watch - always getting to 12 O'clock midnight (and later 2,3 a.m.) when the date and day change and turning it untill current time. 4R36 Seiko 2nd gen Monster.
Intriguing, great video and excellent close-up microscopic filming of these watch day/date functions. Thank you. When my mechanical watches stop and need winding, I can fortunately just turn the crown from the base position to wind it up. If it requires a rotor wind up then I just have to shake the watch enough to get it to go. Now, if the hour hand is in the 9 to 3 danger zone, I just let the watch run to get it past that time frame. Sometimes I don't even know if that could be AM or PM. Don't want to take any chances. A few times I pulled the stem all the way out for the time setting when it was in that zone but I don't think that caused any damage to the date or day wheels. I have a watch that has a month wheel and I thought it would advance the month after the 31st but it didn't .The person who looked at it said you have to do that manually via a pusher. Thanks so much again, loved the video!
Hi Marc another great watch and learn, you are one of the Internets good guys.you are a very passionate and interesting human being. 👍 Thank you for taking the time to explain the machinations to me and all who want to be educated about how these little time telling devices we wear on our wrists work or don't work.I still believe you missed you're calling to be a teacher.👍
Great video! The visual really helps to understand why not to change the day/date between 9pm-3am and shows the consequences! Also If its an affordable watch then it's probably not cost effective to repair after that and the watch is now junk. Cool to see that. Thanks!
This is very informative. What about if you set the time as it turns, but not necessarily just the day/date... will that cause the same type of damage?
Fantastic guide to what actually happened inside the body of the watch, do all watches have plastic components like the one shown, e.g. Rolex etc. ?? Amazing construction of mechanical watches. Totally engrossed viewing.
so we are not to change the date/day bet 9pm and 3am (i'm assuming at the 1st position of the crown, but any harm if we change it by turning the hands instead (at the 2nd position of the crown)?
Great video 👍 IBroke the metal part that sits on that white wheel on one of my nh35 movements. Quickset doesn't work now 🥺 If you want to change the date, you can wind it up to 12 a.m when it automatically click's over. Then wind back about for times and forward again, and it will change.
Hi there, did you manage to find a spare date corrector for your NH35 mouvement? I just happened to do the same mistake with my Seiko 5 pepsi and can't find that part anywhere.
Hi Marc, I really love this Watch and Learn series. I wonder if you could make a video explaining how an automatic rotor can wind the mainspring of a watch while the watch is running. I have watched many mechanical watch videos (including your mechanical v. quartz movement video) and this is still a mystery to me. I can't warp my head around how the mainspring is gaining tension while also losing tension via the escapement.
Excellent demonstration. I recently bought a no date automatic so this won't be an issue. I sometimes miss the date function when I have to fill out some paperwork, but when I'm retired someday and someone asks the date I can reply "Who cares." On a more serious note, do ETA date movements use plastic gears like this?
Such a helpful video. If you say to yourself, only quick set the date after setting the hands to 6:30, would that be a less confusing, easier to remember rule? After all, who knows if the watch has stopped on am or pm until cycling past 12, especially if you have a bunch of them that just sit around.
Need your help. I've owned a casio edifice 539d-7av watch. Its date changes middle of the day instead of night. How can I solve this problem? (Note: I've bought it from Singapore and I'm in Bangladesh now) . (Love your "watch and learn" videos very very much. I'm 19 and a watch lover. I just started collecting watch and this casio is my first one.)
That’s a real amazing video that fully enlightens me why it is harmful to change date between the time people mentioned. I just don’t do it because I heard it, but now i can see it clearly. However, I still want to know Rolex GMT Master II also has a same mechanism is what’s shown in the video. Because I heard that the original purpose of GMT Master was to let Pan Am pilots can find the time and date in certain time zones, it is made to change date (which is moving an hour hand) and time whenever they want. I still wonder GMT Master II is going to damage the movement when it manually changes date in that “dangerous” time range
I really enjoyed the video Mark and it was indeed unfortunate you did'nt catch it getting clobbered on video . Slow motion please if possible for the retake in a future example of what can happen if you mess with date and time adjustments at the wrong time . I have a Seiko Kenetic Auto Relay which I had bought on a holiday to Denver about twenty years ago . It has never missed a beat and I'm still wearing it to this day . As I've clocked a few miles up as the hours , minutes , and seconds have passed , the only maintance necessary was because my wraist had lost weight and I've had to remove four links . I've gone through three girlfriends a dozen high insurance cars , and the only thing I've got left is my trusty old Seiko , which has never required any maintance , which is more than I can say for Jane, Sonia and Joan ! . All the best Mark , With kind regards from Jonathan , in Belfast Northern Ireland United Kingdom . Ps...has any-one seen Jane ? . Keep up the hard work as your vids are great .
I need to say it again, your videos are very good excellent work Mark ! At first i said to myself, why the industry become so cheap and they made the wheels from plastic. But i realized they made them out of plastic intentionally so they can be broken down, if to much force is applied on them, in order to cause less damage to the mechanism.
While it is clear why the 2 x black wheels might break (e.g. plastic fatigue after repeated flexing), it is not at all clear why the small white wheel broke (especially that is is not fixed on a pivot and can float around). The only possibility I see is that the black day wheel, the central rotor, the pivoted white wheel and the floating white wheel have to be in a particular position (possible, but improbable) so that the force transmits through the whole contact chain (black wheel->rotor->pivoted white wheel->floating white wheel) in a very particular way (so that the weakest part gives off under that momentary force when all are in contact). I can see why it is not recommended, but if one does it one time by accident, it is highly improbable that anything is damaged. Am I wrong ?
That would be my question as well: if those fragile gears were made out of brass instead of plastic, would the warning about changing the time during the danger hours no longer be needed?
So I was going to delve deeper, but didn't. Higher end watches have an instant flip. They do this by pre-loading the date wheel with a spring. If the date is advanced, it just passes by. No risk of harm. When you spend 5 or 10K on the watch, they engineer against these sort of things.
With all of my automatic watches I set the time first but stop on the day before the correct date. So if I need to change the date to the 12th I set the time until it turns over on the 11th and I continue to set the watch until I reach the correct time. I'm usually doing this first thing in the morning so it's past 0300 hours. The last thing I do is set the correct date using the crown. I give the crown a few turns to wind it, put the watch on my wrist, and carry on.
I did not know that and my watch came without instructions. It started like this: First, when the date changed it would move up two days instead on one, very annoying so I reset it quiet often, I don't remember doing it between 9 and 3 o 'clock, but I didn't know...so, I just might have. Next, the quick set for the date hung up....so, I had to go through all the 31 days to change the date, then next, while doing that clockwise, there was some resistance at about 9:40 and since that, the hour hand cannot move past 9:40. This was a 10 bucks quartz watch, but still...it was new
I once forgot about the rule and changed the date at around 11 pm on my new 5 sports. I was sweating as soon as I realized it but luckily nothing broke, the day/date function works just fine. The watch is about to be cleandled and regulated soon so if something is wrong the watch maker is gonna tell me 😄 Its good that I have a spare mechanism to replace parts if something goes wrong.
Super cool video, this is one of the best produced watch learning video in the net, this is taking the channel to the next level, please keep the good work..LIKE all the way..
I know this rule. Took out a seiko 7s26 from my drawe haven't worn in a long time. Did this, while thinking I had the time in the "good zone". I was at 2:30 am. After realizing, went to the correct time not to damage. Still works, do uou think it's ok?
Awesome vid, very well explained. I have a random question. I own a SRP775, and have to hand wind it from time to time. Is there a way to tell when it’s wound all the way, and should I worry about over winding it?
Not exactly; unless you can hear when the spring is fully wound; there is a slight change in sound. Don't worry about overwinding; but don't wind the heck out of it either.
4:42 hey! My parents had an umbrella cockatoo for a while. They live really long lives and have an insanely painful bite lol. One of the loudest and most annoying pets when they want to be loud.😂 A talking bird is always amusing, though!👌🏼
Great video. Thank you. Now I see what I have accidentally done to my Carrera Cal 16. How much do you think may it cost to replace this gear in eta 7750. I heard numbers from 120 to 400. Thank you.
Great instructional video! Very much appreciated it. Is it sad that your junk Seiko I actually love? I am not currently seeking out one like in your video. Would have love to see that carnivorous bird ! Animals are just so awesome. Their little quirks and personalities. Maybe this video answers this question , or maybe not. I have purchased a few used Swiss autos. One is a Baume and Mercier Capeland chrono and the other one are a Tag Heuer Auquaracer auto chrono and a Longines HydroConquest auto chrono. All of these watches do the date change at around 5 o Clock to 6 o clock? None of them change around midnight. So what does this mean? Do the date wheel and all need to be removed and reset all the gears properly? Thank you for your time and consideration
Hi Marc, thank you for this video. I damaged my quick date setting today actually and I've been searching online to find a video explaining it and this is the only one I came upon. I own a Sinn 556i with an ETA 2824-2. I get the dilemma with the top gear, where the stress of the spring action from constant date changing can cause it to break between 9pm-3am. But I'm not exactly clear on why the bottom gear snapped based on the 9pm-3am time frame. Is it simply because of the extra stress on the small gear arms from the top spring? In other words, the top spring hasn't cleared yet, so the bottom gears have a little more pressure on them as they spin and eventually snapped. Is that correct? Are the gears that delicate on an ETA?
Outstanding video!! Love it and important to know. Plus you are a bird owner too..I knew you are good person, but now we are cool brother. I have 3 cockatiels. You need to bring that umbrella cockatoo in one of these videos. Hopefully is not camera shy.
I am sorry to hear that. Hope the bird give you many great memories to remember. You never forget a bird because each one has a special personality. Nice video though.
Thanks. This was another great watch and learn. Can you please do one on mecha-quartz movements. I don't understand how a quartz watch can have a chronograph that works looked a mechanical.
I'm not sure if I did this to my watch. It was around 21h when I set the date. How do I know if I messed up my mechanism? WIll my Seiko Presage stop showing date accurately if I made something to it? Thanks for helping guys.
+ Long Island Watch You always explain everything. Thank you. Question. That is for Seiko mov. What about other movements?? Is that rule to rule them all, or not?? Thanks
Just a quick question : i see how the mishandling of day/date change can break the black gear on top left side...but I don't understand why the white plastic gear on the bottom right broke : what made it break? i am not seeing a direct correlation...can you please explain why the white gear had lost a teeth?
![เจ็บที่ยังฮัก - ม่อน วรวิทย์ [ Official Mv ] จอนนี่มิวสิค](http://i.ytimg.com/vi/KALIGSRSjFs/mqdefault.jpg)
I've been on youtube since its inception. I'm not into watches. This is the best video that I've watched in all of TH-cam. Informative, to the point, no fillers, speaks clearly, knowledged, clear video. Thank you very much.
Long Island Watch University with Professor Marc. Makes me appreciate the intricacies in even a basic watch like the Seiko 5.
Thank you :)
This video will be mandatory to watch for every Seiko owner!! Thank you so much!
Very informative Marc and as already mentioned very well done!
Much appreciated!
Brilliant explanation! I accidently changed the date at the wrong time on a new watch and freaked out. It still works, and like someone else said, calmed me down enough to know I didn't break anything. After seeing this I will definatly be more careful with the date setting from now on. Thank you. This was really helpful and Interesting.
I just got my first automatic and out of the box the time was set at around noon or 11:30, it was also date transitioning. I went to pull to second position to change time and going through the first position the crown shifted the date as I pulled it out, now I’m kinda freaking out.
This also helped put my mind at ease over having accidentally done this once. Thanks!
Yes, you are probably OK!
I did it too last week. I'm still new to automatic watches and I was dumb not to read the manual. I turned the crown a few times at 12 pm to change the day. I got so worried that I might brake the day&date that I have been keeping an eye on the day&date change ever since. What I've noticed is that the date changes inconsistently, sometimes at 23:57, sometimes at 23:56. Not sure about the day though, because I always fall asleep right after I watch the date change. Does this mean it's broken?
@@DC-oy3gk I don't know, I'm not a watch expert but I've seen it happen on my watch aswell, personally it works just fine
Did this once and broke my Seiko 5
This is of course very informative, but what I love most about this video is how you manage to make it really fascinating showing us how these mechanical things interact, and how fragile parts of this machinery really can be. I've just recently discovered your channel, and are going through your Watch and Learn vids.
So far, this was the most fascinating one. Great job!
That was super interesting! I'd love to see a video on why it's not recommended to set the time by turning the hands counter-clockwise, how that affects the day/date, and why the second hand jumps around on cheaper movements. Also, how do some of the instant date-change mechanisms work, and can they be broken in a similar way, like say, between 11:59 and 12:01 or something? This is a great series.
Okay, thank you!
Thanks so much for all the details Mark! I'm an engineer myself so I love having detailed knowledge about how something works.
this vid helped me understand the intricacies of adjusting time and date on an automatic. being a newbie, this is very helpful
Cool video. It's a terrible engineering/design flaw. An end user shouldn't be able to destroy a watch by turning the crown. Imagine destroying your television by pressing a button on the remote. You need to design products to be idiot proof.
LOL. I would agree with that!
Sjaak De Vries exactly... this is ridiculous
Sjaak De Vries that’s a good way to sell more watches.
Exactly! Even a certain engineer tend to break the gears too *wink* *wink* (you know who) 😂😂
you sould try this maybe. start your car, keep in in park or neutral, then press the petal until it hits the rev limiter. now this is the important part, keep it there until you engine blows up.
Excellent. Taking an automatic watch apart always seemed so difficult to do. You couldn't have done a better description of what's involved. The best channel for learning about the inner makings of a timepiece. I thank you for spreading your knowledge on a subject few would even try. Keep them coming, I've learned more from your channel then any manuals could show you. Another great video from Long island watch company.
Do you sell a repair kit, or recommend a repair kit that would allow me to strip down an automatic watch to make these kinds of repairs. Thanks for your time, Rob
Hello Rob - thanks for your message. The TSA7003 or TSA9011 kits we sell are great for fooling around.
Thank you for this informative video Marc.
For me, this basic Seiko movement is already a piece of ingenious creation.
Now, just imagine something like annual calendar, moonphase or other mechanical marvels!
Indeed!
Thank you so much this gave me peace of mind because I didn't know about the danger zone and I set the day on my Seiko 5 during 1:30am when the day is already showing the 2nd language (Spanish). I didn't feel anything being forced and everything runs smoothly.
is it still working fine? because i did the EXACT SAME thing because I thought the different lang. was showing by mistake
Thank you Mark, very educational. Seeing is believing! I did feel a little sorry for the little Seiko. I love them so much!
LOL, thank you.
Great. I was actually lucky and changed my day and date on my Seiko Sports 5 SRPD51K2 during the safe period.......before reading the manual.. I felt lucky when I found this information AFTERWARDS! I now know...thanks for the video!
Mark, I love all you Watch and Learns, but think this is one of my favorite. Keep expanding our minds! Thanks
I thought so, thank you!
This has been one of the best if not the actual best watch and learn videos, I've seen so far, i did change the day and date on my Seiko 5 when i first got it and it was near enough midnight by the time i was able to get the watch out of the box and set it up and of course I didn't read this manual so i set the time then the day/date, i was horrified when i saw that i wasn't supposed to do that and bloody relieved when i saw that i hadn't damaged my lovely new watch that i had to save for almost a year to buy, damn lucky.
Thanks for watching, and now you know!
You had not damaged it because it has protection against that. th-cam.com/video/9EuHG1bYPKs/w-d-xo.html
Thank you SO much Marc! I made the same mistake as some of the others and was worried sick that I had damaged the mechanism. Amazing to see what is going on 'under the hood'. No damage done!
Ever since I started collecting watches I knew this, but never really understood what was really happening in the movement itself , thank you Marc!
Thanks for watching!
Marc, you are a true hero, sharing your knowledge in the form like this!
Thanks for watching.
Pure knowledge for me, absolutely great. Thank You Sir ⏱⌚️
I usually do one way "full circle" when setting my watch - always getting to 12 O'clock midnight (and later 2,3 a.m.) when the date and day change and turning it untill current time. 4R36 Seiko 2nd gen Monster.
Great idea!
Intriguing, great video and excellent close-up microscopic filming of these watch day/date functions. Thank you. When my mechanical watches stop and need winding, I can fortunately just turn the crown from the base position to wind it up. If it requires a rotor wind up then I just have to shake the watch enough to get it to go. Now, if the hour hand is in the 9 to 3 danger zone, I just let the watch run to get it past that time frame. Sometimes I don't even know if that could be AM or PM. Don't want to take any chances. A few times I pulled the stem all the way out for the time setting when it was in that zone but I don't think that caused any damage to the date or day wheels. I have a watch that has a month wheel and I thought it would advance the month after the 31st but it didn't .The person who looked at it said you have to do that manually via a pusher. Thanks so much again, loved the video!
I'm literally addicted to these episodes!
There are worse things to be addicted to.
Just bought an skx007 and your video simply explained everything I need 👍
Really good Marc, thanks for taking the time to deconstruct this for us 🖒
Actually deconstructed two watches. haha!
Great explenation Marc. Now I do understand why I should not quick change the date between 21.00h and 03.00h.
Thank you.
Perfect!
Super helpful video. Love the zoom in cam and the detailed explanations. Very useful for a beginner like me to learn.
Hi Marc another great watch and learn, you are one of the Internets good guys.you are a very passionate and interesting human being. 👍 Thank you for taking the time to explain the machinations to me and all who want to be educated about how these little time telling devices we wear on our wrists work or don't work.I still believe you missed you're calling to be a teacher.👍
Thank you! I appreciate the kind words.
I'll say that Marc is a teacher,who happens to work in the watch industry.
Wow man, best episode so far!! I love those things under the microscope, you have to do it again sometimes!
Thanks!
Thank you for this video, Marc, it's really informative and helps a lot :)
Thanks for learning!
Great video! The visual really helps to understand why not to change the day/date between 9pm-3am and shows the consequences! Also If its an affordable watch then it's probably not cost effective to repair after that and the watch is now junk. Cool to see that. Thanks!
This is very informative. What about if you set the time as it turns, but not necessarily just the day/date... will that cause the same type of damage?
Fantastic guide to what actually happened inside the body of the watch, do all watches have plastic components like the one shown, e.g. Rolex etc. ?? Amazing construction of mechanical watches. Totally engrossed viewing.
No, not all :)
so we are not to change the date/day bet 9pm and 3am (i'm assuming at the 1st position of the crown, but any harm if we change it by turning the hands instead (at the 2nd position of the crown)?
No, this is fine.
Can Seiko 6l35 be set time in counterclockwise direction ? Thank you 😊
This video is the reason I subscribed
Great video 👍
IBroke the metal part that sits on that white wheel on one of my nh35 movements. Quickset doesn't work now 🥺
If you want to change the date, you can wind it up to 12 a.m when it automatically click's over. Then wind back about for times and forward again, and it will change.
Hi there, did you manage to find a spare date corrector for your NH35 mouvement? I just happened to do the same mistake with my Seiko 5 pepsi and can't find that part anywhere.
Just awesome Marc. Also explains some of the cost differences. 7s26 is so in expensive because of fewer metal parts, I guess.
Hi Marc, I really love this Watch and Learn series. I wonder if you could make a video explaining how an automatic rotor can wind the mainspring of a watch while the watch is running. I have watched many mechanical watch videos (including your mechanical v. quartz movement video) and this is still a mystery to me. I can't warp my head around how the mainspring is gaining tension while also losing tension via the escapement.
Okay, will consider, thank you!
Excellent demonstration. I recently bought a no date automatic so this won't be an issue. I sometimes miss the date function when I have to fill out some paperwork, but when I'm retired someday and someone asks the date I can reply "Who cares." On a more serious note, do ETA date movements use plastic gears like this?
I haven't taken one apart, yet, but the date wheel is certainly plastic.
Such a helpful video. If you say to yourself, only quick set the date after setting the hands to 6:30, would that be a less confusing, easier to remember rule? After all, who knows if the watch has stopped on am or pm until cycling past 12, especially if you have a bunch of them that just sit around.
Need your help.
I've owned a casio edifice 539d-7av watch. Its date changes middle of the day instead of night. How can I solve this problem? (Note: I've bought it from Singapore and I'm in Bangladesh now)
.
(Love your "watch and learn" videos very very much. I'm 19 and a watch lover. I just started collecting watch and this casio is my first one.)
That’s a real amazing video that fully enlightens me why it is harmful to change date between the time people mentioned. I just don’t do it because I heard it, but now i can see it clearly. However, I still want to know Rolex GMT Master II also has a same mechanism is what’s shown in the video. Because I heard that the original purpose of GMT Master was to let Pan Am pilots can find the time and date in certain time zones, it is made to change date (which is moving an hour hand) and time whenever they want. I still wonder GMT Master II is going to damage the movement when it manually changes date in that “dangerous” time range
Excellent video Mark! Very educational, loved it.
Does a Sellita SW200 have a safeguard for this? It must because I just did this mistake and it's still working perfectly
I really enjoyed the video Mark and it was indeed unfortunate you did'nt catch it getting clobbered on video . Slow motion please if possible for the retake in a future example of what can happen if you mess with date and time adjustments at the wrong time . I have a Seiko Kenetic Auto Relay which I had bought on a holiday to Denver about twenty years ago . It has never missed a beat and I'm still wearing it to this day . As I've clocked a few miles up as the hours , minutes , and seconds have passed , the only maintance necessary was because my wraist had lost weight and I've had to remove four links . I've gone through three girlfriends a dozen high insurance cars , and the only thing I've got left is my trusty old Seiko , which has never required any maintance , which is more than I can say for Jane, Sonia and Joan ! . All the best Mark , With kind regards from Jonathan , in Belfast Northern Ireland United Kingdom . Ps...has any-one seen Jane ? . Keep up the hard work as your vids are great .
Great vid and explanation (as always)....I take it that adjusting the date backwards is a big NO NO.
Well, on the Seiko, you cannot. It simply doesn't allow for it; the gears push out of the way.
Love these videos showing the inner workings!
Thank you.
Thanks so much for all the details
These vids are ridiculously interesting!
Thanks so much for making them.
I need to say it again, your videos are very good excellent work Mark !
At first i said to myself, why the industry become so cheap and they made the wheels from plastic. But i realized they made them out of plastic intentionally so they can be broken down, if to much force is applied on them, in order to cause less damage to the mechanism.
Correct; it is the weak link on purpose, though it isn't in the most convenient location. Also, no lubrication is necessary.
That is interesting so when i was struggling to oil the damn thing, i was struggling for nothing. :-))
While it is clear why the 2 x black wheels might break (e.g. plastic fatigue after repeated flexing), it is not at all clear why the small white wheel broke (especially that is is not fixed on a pivot and can float around). The only possibility I see is that the black day wheel, the central rotor, the pivoted white wheel and the floating white wheel have to be in a particular position (possible, but improbable) so that the force transmits through the whole contact chain (black wheel->rotor->pivoted white wheel->floating white wheel) in a very particular way (so that the weakest part gives off under that momentary force when all are in contact). I can see why it is not recommended, but if one does it one time by accident, it is highly improbable that anything is damaged. Am I wrong ?
Great video, do higher end watches have this problem too? They usually have all metal gears.
That would be my question as well: if those fragile gears were made out of brass instead of plastic, would the warning about changing the time during the danger hours no longer be needed?
So I was going to delve deeper, but didn't. Higher end watches have an instant flip. They do this by pre-loading the date wheel with a spring. If the date is advanced, it just passes by. No risk of harm. When you spend 5 or 10K on the watch, they engineer against these sort of things.
That’s good to know - thanks for the reply, Marc!
What about an ETA 2824?
With all of my automatic watches I set the time first but stop on the day before the correct date. So if I need to change the date to the 12th I set the time until it turns over on the 11th and I continue to set the watch until I reach the correct time. I'm usually doing this first thing in the morning so it's past 0300 hours. The last thing I do is set the correct date using the crown. I give the crown a few turns to wind it, put the watch on my wrist, and carry on.
I did not know that and my watch came without instructions. It started like this: First, when the date changed it would move up two days instead on one, very annoying so I reset it quiet often, I don't remember doing it between 9 and 3 o 'clock, but I didn't know...so, I just might have. Next, the quick set for the date hung up....so, I had to go through all the 31 days to change the date, then next, while doing that clockwise, there was some resistance at about 9:40 and since that, the hour hand cannot move past 9:40. This was a 10 bucks quartz watch, but still...it was new
Marc...congratulations on this excellent video. The level is ideal and fascinating for enthusiasts. Well done. Rgds Andy McI.
Much appreciated. Thank you.
Very well done video, thanks Marc !
Thank you!!
I once forgot about the rule and changed the date at around 11 pm on my new 5 sports. I was sweating as soon as I realized it but luckily nothing broke, the day/date function works just fine. The watch is about to be cleandled and regulated soon so if something is wrong the watch maker is gonna tell me 😄 Its good that I have a spare mechanism to replace parts if something goes wrong.
lol I did that today too.
Excellent video Mark. Thanks.
Thanks!
Damn I fucking love this Channel!
Like u said it in the description we all heard it and know it but no one knows exactly why. Great Video thumbs up 👍🏼
Super cool video, this is one of the best produced watch learning video in the net, this is taking the channel to the next level, please keep the good work..LIKE all the way..
Thanks so much. Is there another watch learning channel :)
Channel is very beautiful. And continuous creativity. I wish you more success. I am your friend from Saudi Arabia Saad. And greetings to you
Much appreciated.
Great video! Does this also apply to quartz movements?
14:55, "It's all really... I guess just friction, gravity, physics, call it what you want."
It's watch elves.
LOL! Great handle BTW.
Underwear gnomes
thanks you for explaining so clearly marc :)
Glad you enjoyed it.
Absolutely fascinating! Nicely done!
Thank you.
Very cool. Thanks for this lesson.
Thank you.
Thankyou. Now i know what happened to my timex. It's stuck on Wednesday. I hope i didn't break anything.
I know this rule. Took out a seiko 7s26 from my drawe haven't worn in a long time. Did this, while thinking I had the time in the "good zone". I was at 2:30 am. After realizing, went to the correct time not to damage. Still works, do uou think it's ok?
Awesome vid, very well explained. I have a random question. I own a SRP775, and have to hand wind it from time to time. Is there a way to tell when it’s wound all the way, and should I worry about over winding it?
Not exactly; unless you can hear when the spring is fully wound; there is a slight change in sound. Don't worry about overwinding; but don't wind the heck out of it either.
Nice video. Do you have a toturial how to replace this white plastic wheel?
Bravo Marc.
thanks for the knowledge you have showed
4:42 hey! My parents had an umbrella cockatoo for a while. They live really long lives and have an insanely painful bite lol. One of the loudest and most annoying pets when they want to be loud.😂 A talking bird is always amusing, though!👌🏼
Excellent tutorial
Great video. Thank you. Now I see what I have accidentally done to my Carrera Cal 16. How much do you think may it cost to replace this gear in eta 7750. I heard numbers from 120 to 400. Thank you.
Great video. I just wonder why some really creative watch maker/engineer has not come up with improved design and/or materials.
Nice vid. Thanks! If my automatic watch only changes the day at 11.30pm (est.) & date at 4.45am (est.), what could have caused that to happen pls?
awesome video! always wondered what the big todo was about this, glad to know now
Yup!
Awesome explanation! Why would someone give it a thumbs down. Big thumbs up from me. Keep it up!
Thank you!
great video . very informative and addresses the issue perfectly
thanks.
Very cool now I know why you shouldn’t change the date during those times.
Great instructional video! Very much appreciated it. Is it sad that your junk Seiko I actually love? I am not currently seeking out one like in your video.
Would have love to see that carnivorous bird ! Animals are just so awesome. Their little quirks and personalities.
Maybe this video answers this question , or maybe not. I have purchased a few used Swiss autos. One is a Baume and Mercier Capeland chrono and the other one are a Tag Heuer Auquaracer auto chrono and a Longines HydroConquest auto chrono.
All of these watches do the date change at around 5 o Clock to 6 o clock? None of them change around midnight.
So what does this mean? Do the date wheel and all need to be removed and reset all the gears properly?
Thank you for your time and consideration
Very informative, thank you! Does the 9pm-4am restriction applies to the date change with time adjustment (time setting/second crown position)?
Your videos are awesome - thank you for making them! I'll be buying from you in the future.
Thank you!
Thanks.
Great video! Loved the info. Does a broken date change wheel affect the timekeeping of the watch?
No, it does not.
Hi Marc, thank you for this video. I damaged my quick date setting today actually and I've been searching online to find a video explaining it and this is the only one I came upon. I own a Sinn 556i with an ETA 2824-2. I get the dilemma with the top gear, where the stress of the spring action from constant date changing can cause it to break between 9pm-3am. But I'm not exactly clear on why the bottom gear snapped based on the 9pm-3am time frame. Is it simply because of the extra stress on the small gear arms from the top spring? In other words, the top spring hasn't cleared yet, so the bottom gears have a little more pressure on them as they spin and eventually snapped. Is that correct? Are the gears that delicate on an ETA?
Mark thanks a lot for this video. You are the man! Happy New Year!🎊
Outstanding video!! Love it and important to know. Plus you are a bird owner too..I knew you are good person, but now we are cool brother. I have 3 cockatiels. You need to bring that umbrella cockatoo in one of these videos. Hopefully is not camera shy.
Well, she's ashes now! She passed away in 2010. :(
I am sorry to hear that. Hope the bird give you many great memories to remember. You never forget a bird because each one has a special personality. Nice video though.
Thanks. This was another great watch and learn. Can you please do one on mecha-quartz movements. I don't understand how a quartz watch can have a chronograph that works looked a mechanical.
Okay, thank you for the idea.
Great video! Love your work.
Thank you.
Thank you Marc.
Love this video! Could you possibly do something similar for an eta? I would like to understand how they manage to change the date instantly
I am going to, yes.
I'm not sure if I did this to my watch. It was around 21h when I set the date. How do I know if I messed up my mechanism? WIll my Seiko Presage stop showing date accurately if I made something to it? Thanks for helping guys.
+ Long Island Watch You always explain everything. Thank you. Question. That is for Seiko mov. What about other movements?? Is that rule to rule them all, or not?? Thanks
Hold tight, there will be a video with the ETA coming out soon.
Excellent presentation, Thanks
Thank you!
Nice video! Thanx Marc
Thank you.
Just a quick question : i see how the mishandling of day/date change can break the black gear on top left side...but I don't understand why the white plastic gear on the bottom right broke : what made it break? i am not seeing a direct correlation...can you please explain why the white gear had lost a teeth?
The entire gear train was jammed up.
Nicely done professor!!
Haha, thanks!