My $120 Citizen watch built on 8210 runs at +1 spd 0.0 ms DU / +3 spd 0.1 ms PD / +7 spd 0.2 ms PL after a simple regulation (It started somewhere between +10 and +20 spd out of the box.). Was I lucky with this one, as my NH35-based watch has 40 spd difference between positions? Not to mention that Miyota 8210 is much easier to tinker with, there is more space between the regulator arm and the hair spring and the regulator arm reacts in a more predictable manner compared to NH35.
your videos are very explanatory. I just bougt a TISSOT heritage 1938 with an ETA 2824 COSC movement. I have fallen in love with this watch which it runs around 23 seconds slow in 7 days. Wondering if you could review such a movement which is very popular. thanks
Technically if the movement wears out just the small amount it might reach 0-+5 seconds as it kinda positional deviation, my ny0040 has this movement and it run well within cosc range, normally +2 over a day
I've great experience with this one and also the 9015. Just wear the watch for 2-3 month and than regulating it gives great results. Both are running on a deviation of approx +1-2 seconds compared to atom clock. I'm using for that face up, 12 o'clock down and crown down. The amplitude here is not that important after a while mine settled in on around 240 dial up. It's part of the design...similar you will see with older seiko's.
my daily wear watch is a timex with 8215 that has been running for a few months, checked daily, at between 0 and +4 variance in a day. i personally don't believe this is sustainable in a cheap movement but i'm definitely enjoying it while i can
still keeping time. i set it when it is off by 30 seconds. i set it to the exact time on the 1st of may. 21 days later, i have not had to set it again. stellar stuff!
I have a 8215 and runs by 1/2 seconds deviation per day ! I am very impressed ! I baught another watch with the same movement and when it changes tha date it’s falling behind about 15 minutes ! What can I do to fix it ? Also when I adjusted the date it feels like it’s grabbing somenthing. Not feeling smooth
The movement can usually be easily adjusted by a watchmaker. Depending on the brand of the watch, the movement might not have been cased or handled correctly. For the date setting problem, you might have tried to adjust the date between 9:00pm and 1:00am while the mechanism was working. That can damage the movement and mess up the date-setting mechanism. Damage in this part of the movement might also cause lots of friction and be responsible for the inaccuracy. I would consult a watchmaker or check the watch on a timegrapher if you have one.
Can't understand why people get so obsessive about the accuracy of mechanical watches. When I bought an Omega for flying back in 1968 it did matter but now its just academic interest. If you need an really accurate watch, buy a quartz.
Trouble with quartz is the batteries fail at the most Inconvenient times, so you need solar which has to be kept somewhere light or kinetic which you must keep in your rotation. So mechanical is simpler and as they are able to keep pretty good time why not insist on it.
I used to work with a lot of vibrating machinery back in the 1970-is. That was hard on mechanical watches. Mechanical was the norm but it started to be replaced by quartz. When quartz became cheap, I would never spend more than $ 20:- on a watch, no point in replacing anything on something like that. Now I don't need the tolerance for vibration so I'm back to inexpensive mechanical and I have a couple of inexpensive digital quartz too. There is no rational reason to wear a mechanical watch, it's about the feeling of it. When that feeling is accompanied by a known reliability the watch is just as much a tool as a companion, similar to what a car can be. I like to know how much my watch deviates because that way I can rely on it. I wouldn't call it an obsession it's about usability. I like to use the tool because i serves a purpose and I like the feel of it. Mechanical watches can become a hobby, lots to learn about. Learning about quartz isn't that much fun, at least not for me.
When I was a kid my first watch was a Timex. That was in the early 70s. That watch was abused and thrown in the trash. From that time on I wanted another mechanical watch but really never had much money to buy them. Now I have a mechanical watch. There is no reason for me to like them now a days because technology has pretty much made them obsolete. I just like them. This 8215 miyota movement is a cheap blast from the past. I love it.
It's a service crown and stem. Notice how the stem doesn't show any threads. Usually when you purchase from supplier, it will ship with the service crown/stem but also include a new stem that is fully threaded. If you are lucky you'll also receive dial spacer and dial screws (but not always). Crowns are specific to the watch, not the movement.
Here is my full Review of the Seiko NH35 / NH36: ua-cam.com/video/nlzB7Y3_O9k/v-deo.html
I have 4 auto Miyotas, all of them never exceed 4 seconds per day (3 exact precise, one minus four seconds)
People rag on the 8000 series but I've never been able to work out why.
My $120 Citizen watch built on 8210 runs at +1 spd 0.0 ms DU / +3 spd 0.1 ms PD / +7 spd 0.2 ms PL after a simple regulation (It started somewhere between +10 and +20 spd out of the box.). Was I lucky with this one, as my NH35-based watch has 40 spd difference between positions? Not to mention that Miyota 8210 is much easier to tinker with, there is more space between the regulator arm and the hair spring and the regulator arm reacts in a more predictable manner compared to NH35.
your videos are very explanatory. I just bougt a TISSOT heritage 1938 with an ETA 2824 COSC movement. I have fallen in love with this watch which it runs around 23 seconds slow in 7 days. Wondering if you could review such a movement which is very popular. thanks
Very nice watch. That is a pity that it does not have a date.
Technically if the movement wears out just the small amount it might reach 0-+5 seconds as it kinda positional deviation, my ny0040 has this movement and it run well within cosc range, normally +2 over a day
On a side note, it appears your 8215 has the hacking brake lever adjacent to the balance wheel so it's newer production.
What do you advise on the loud rotor noise on this movement? That is the only con I can think of!
I've great experience with this one and also the 9015. Just wear the watch for 2-3 month and than regulating it gives great results. Both are running on a deviation of approx +1-2 seconds compared to atom clock. I'm using for that face up, 12 o'clock down and crown down. The amplitude here is not that important after a while mine settled in on around 240 dial up. It's part of the design...similar you will see with older seiko's.
I'm not a watchmaker but when in a vertical position, I suspect that gravity plays a part in reducing the amplitude of the balance wheel.
my daily wear watch is a timex with 8215 that has been running for a few months, checked daily, at between 0 and +4 variance in a day. i personally don't believe this is sustainable in a cheap movement but i'm definitely enjoying it while i can
still keeping time. i set it when it is off by 30 seconds. i set it to the exact time on the 1st of may. 21 days later, i have not had to set it again. stellar stuff!
Would putting a seconds hand on the movement slow down the rate because of its inertia?
I have a 8215 and runs by 1/2 seconds deviation per day ! I am very impressed ! I baught another watch with the same movement and when it changes tha date it’s falling behind about 15 minutes ! What can I do to fix it ? Also when I adjusted the date it feels like it’s grabbing somenthing. Not feeling smooth
The movement can usually be easily adjusted by a watchmaker. Depending on the brand of the watch, the movement might not have been cased or handled correctly. For the date setting problem, you might have tried to adjust the date between 9:00pm and 1:00am while the mechanism was working. That can damage the movement and mess up the date-setting mechanism. Damage in this part of the movement might also cause lots of friction and be responsible for the inaccuracy. I would consult a watchmaker or check the watch on a timegrapher if you have one.
Day of week setting has a bit of resistance on Miyotas 8xxx, that's normal.
you guys are lucky mine is always +20 a day
has this movement a good durability
Can't understand why people get so obsessive about the accuracy of mechanical watches. When I bought an Omega for flying back in 1968 it did matter but now its just academic interest. If you need an really accurate watch, buy a quartz.
Trouble with quartz is the batteries fail at the most Inconvenient times, so you need solar which has to be kept somewhere light or kinetic which you must keep in your rotation. So mechanical is simpler and as they are able to keep pretty good time why not insist on it.
I used to work with a lot of vibrating machinery back in the 1970-is. That was hard on mechanical watches. Mechanical was the norm but it started to be replaced by quartz. When quartz became cheap, I would never spend more than $ 20:- on a watch, no point in replacing anything on something like that. Now I don't need the tolerance for vibration so I'm back to inexpensive mechanical and I have a couple of inexpensive digital quartz too. There is no rational reason to wear a mechanical watch, it's about the feeling of it. When that feeling is accompanied by a known reliability the watch is just as much a tool as a companion, similar to what a car can be. I like to know how much my watch deviates because that way I can rely on it. I wouldn't call it an obsession it's about usability. I like to use the tool because i serves a purpose and I like the feel of it. Mechanical watches can become a hobby, lots to learn about. Learning about quartz isn't that much fun, at least not for me.
@@A1SiriusI find Quartz Crystallography absolutely fascinating, but that's just me.
When I was a kid my first watch was a Timex. That was in the early 70s. That watch was abused and thrown in the trash. From that time on I wanted another mechanical watch but really never had much money to buy them. Now I have a mechanical watch. There is no reason for me to like them now a days because technology has pretty much made them obsolete. I just like them. This 8215 miyota movement is a cheap blast from the past. I love it.
@@philspencelayh5464 Most decent quartz watches now give the wearer an indication the battery is running low. Typically a 'double tick'.
I have miyota 8285 movenment . its accuracy is +- 1 second per day
The Miyota 5215 Citizen is much better than the Seiko NH35 in terms of precision and adjustment.
That plastic crown is absolutely vile!!!
It's a service crown and stem. Notice how the stem doesn't show any threads. Usually when you purchase from supplier, it will ship with the service crown/stem but also include a new stem that is fully threaded. If you are lucky you'll also receive dial spacer and dial screws (but not always). Crowns are specific to the watch, not the movement.
@@mtbbiker6401 OH. I didn't know that :D That explains why I see those ugly grey crowns in so many watch videos!!