Do you mean you expect the watch to stop after 12 hours?

I don't know the power reserve spec on that watch, but it's certainly over 40 hours. Most people (just about everyone, actually) wants more power reserve, so the watch doesn't stop overnight, or even a day or two off the wrist.

Your watch is automatic. There's a rotor inside that winds the watch automatically as you wear it. So if you're wearing the watch every day and reasonably active, the watch is likely "topped off," or the mainspring fully wound, and at it's full power reserve.

You can unscrew the crown and wind it manually, yes, but that feature is mostly for when the watch has finally run out, and you are getting it going again. Once on your wrist, the rotor will wind it the rest of the way for you.

 

First of all thank you for the reply!

No,I didnt expect for it to fully stop after 12 hours, I know that it has some 40+ hours reserve. I was expecting for the mechanism to need at least a turn or two after 12 hours, just to check if it's fine. Should I leave it 40 hours on the nightstand to test it? I was afraid that I overwound it (if that's possible) the first time I wound it. I simply want to test the mechanism

 

You can't over wind it. Automatic winding is accomplished by movement. Wear the watch, if it stops running it means there wasn't enough movement.
Just so you know, gently moving the watch right and left for 5 minutes will fully wind a completely unwound Kamasu.

 

As Diety42 notes, as long as you wear it daily and are reasonably active, it will keep running. If it sits on your nightstand for a couple days or more, it will stop (after 38-40 hours or so of inactivity).

You can't overwind an automatic watch; there's a clutch mechanism that disengages the winding after it reaches maximum tension.

 

Re: screwing back into the threads.

Turn it backwards a bit with slight pressure until you feel it snap a bit, then you will know it is seated on the threads correctly to be screwed down. Don't over-tighten it.

If you wind it enough to get resistance first, it will be harder to screw it in, made even harder by the fact that these models have a small crown to begin with. 20-30 turns should be enough.

You should only have to wind it if it has stopped, (not worn it for over 40 hours) if it is still going don't bother.

Re: Day/Date. Unless it is really off from being stopped for awhile, I just keep moving the hands forward until the day/date reaches the correct one.

If you must advance day/date manually, make sure the time is set to 6oclock, set it to the day before, then move the hands to the correct time after it has advanced the day/date after passing midnight.

I do this as a rule of thumb with all of my autos as advancing date wheels between 9pm-3am has been know to damage some movements.

 

Re: screwing back into the threads.

Turn it backwards a bit with slight pressure until you feel it snap a bit, then you will know it is seated on the threads correctly to be screwed down. Don't over-tighten it.

If you wind it enough to get resistance first, it will be harder to screw it in, made even harder by the fact that these models have a small crown to begin with. 20-30 turns should be enough.

You should only have to wind it if it has stopped, (not worn it for over 40 hours) if it is still going don't bother.

Re: Day/Date. Unless it is really off from being stopped for awhile, I just keep moving the hands forward until the day/date reaches the correct one.

If you must advance day/date manually, make sure the time is set to 6oclock, set it to the day before, then move the hands to the correct time after it has advanced the day/date after passing midnight.

I do this as a rule of thumb with all of my autos as advancing date wheels between 9pm-3am has been know to damage some movements.

+1
Orient screw down crowns aren’t the smoothest in the world so you can expect it to be a little awkward engaging - BUT DON’T FORCE IT.

 

Wear it for a few consecutive days. Once fully wound, it should stay that way as long as it is on your wrist.

 

Wow! Thanks for all the replies guys,it was really helpful reading all these informations!!! And sorry if I'm being paranoid about overwinding, this is my first automatic and I immediately fell in love with it.
The last thing I don't get is why some manuals have a guideline of turning the crown 20-30 for the watch to get fully wound. If there's resistance at the end of the winding, why not turn the crown until you get resistance? Do the last few turns somewhat damage the winding?

@sticky If there's no chance of overwinding, what do you mean by "dont force it"? Is there any other danger I should be looking for? What happens if you accidentaly pass the point of resistance?

 

You can't over wind the movement because the winding mechanism is designed to slip when fully wound.
Have you ever screwed a bolt into a nut? If the threads don't intertwine correctly you can strip the threads. You want to be careful so you start the screw down process with the threads meshing properly.
These Orient movements actually wind a bit as you screw down the crown, this is normal, you'll feel some resistance as the threads intertwine.
But use care when you start the screwing down process, that's where you must be very careful that you start screwing Not stripping the threads.

 

That's what we mean by don't force it. If you are trying to screw it down and it's not taking well, back it up a bit until you feel it engage the threads again, and then start turning clockwise again.

And don't tighten it too much. (Trying to line the crown logo up may cause you to want to do this).

 

Ok, I think I got it now. I should be careful not to strip the threads in case it doesn't engage fully. I think there's a click when I push to start screwing, that's the cue I'm usually looking for.
Thanks everyone!!! You've been extremely helpful! Hope I can return the favor some day!

 

This is what the forum is here for.

We are just thankful you didn't post a picture of a beat up Folex that was found in your grandpa's armoire and asked how much it's worth.

 

I 'll make sure not to do that!
Though you didn't say anything bout Fauxmegas, so...

 

The Kamasu crown is a bit finicky. I have had mine for three or four months now. You'll get the feel for it in time.

 

My son has a kamasu. I find the crown to be a little small, tucked inside the crown guards, and hard to catch the locking thread.

A watch is likely to take around 30 to 50 turns to fully wind. A couple of winds is not sufficient. Assuming a full power reserve of 40 hours, then an overnight 8 hours may well use the equivalent of 10 wining turns. If you are not vigorously active during the day then the watch charge may be running down and eventually stopping overnight, without additional winds.

For those of us used to having hand wound watches requiring daily winds, a screw down crown is actually an irritation. It seems to be a "feature" there to convince casual watch buyers and WIS (who should know better) that it's necessary for water resistance.

 

@Ollie4ISU Did you have the same experience I described above?Do you find resistance at the end of winding?

@bth1234 That's what baffled me.After 12 hours I'd expect at least a couple turns for it to fully wind again.I only got half a turn.In the meantime I've let it alone for the second day in a row ,just to check what I described.If it still doesn't turn after 40 hours,I guess I got a defect?

 

@bth1234 That's what baffled me. After 12 hours I'd expect at least a couple turns for it to fully wind again.I only got half a turn.In the meantime I've let it alone for the second day in a row ,just to check what I described.If it still doesn't turn after 40 hours, I guess I got a defect?
[/QUOTE]

An automatic watch might be fully wound, but it will still wind. There a sort of ratchet device so that the winding mechanism slips to avoid over-winding the watch.

What happens sometimes is that manually winding an automatic catches the locking thread, and rather than winding the watch, you actually end up locking the screw-down. That may be what's happening to you.

 

Ok, so I tested it out today again, I 'll try to describe as best as I can.
After unscrewing the crown it pops in a position where after 1/4 of a turn it starts resisting, so I left it alone. I tried to push it a little bit towards the case before hearing the pop when it starts screwing again. There is a position there where if I start turning clockwise, I can hear an audible mechanism winding, so I guess that's where it should be. I can go on turning without much resistance, so that's what you were all talking about.
But now the question remains .What's that first position doing where there's resistance? I 'm talking about after unscrewing if you try to turn clockwise, without the aforementioned (slight) push. Does anyone else with a kamasu know?

Edit: No it's not the top of the thread that's resisting because in order for the thread to "catch" I have to push it until it pops into place

 

Not sure what you're getting.

First position - wind
Second - day-date
Third - hands

There will always be "some" resistance when winding, you will feel it increase as you keep winding.

Oh yeah, since I'm wearing mine today, it says hi:

 

These Orient movements are in the wind position while the screw down crown threads are meshing. You going to have approximately 2 full crown rotations while feeling and hearing the movement spring winding. This is normal for these movements. It may feel to you like the spring is getting too tight but it's not, and it's not doing any damage, it's the beast in the animal.

 

It must be only me then, I don't understand what's happening.
For me it's:
First position: Wind
First and a half: The awkward stage
Second Position: Day/Date
Third Position: Hands

I tried something else today. If I start turning anticlockwise for half a turn when in the awkward stage and then start turning clockwise again, it starts winding normally. I guess it somehow meshes with the threads as @CLP suggested.
Everything else works just fine, so I guess I 'll leave it alone and be happy with it

PS: @CLP The red dial is stunning, that's what I originally wanted, but I found the black one for 185 euros (214 USD) and I couldn't help it (normally here it goes for 267 USD). I'm thinking about the red dial kanno now, as I find red dial Orients hard to resist...

 

I tried that just now and I'm not sure where this 1 1/2 stage is, it's either 1 or 2 for me, no in between.

The counter clockwise I was referring to was when you are applying pressure to screw the crown in, which I guess would be before position 1.

I got mine from Japan as noted by the Kanji day. Paid more but wanted it specifically for that reason (other than the red dial of course.)

 

No 1/2 stage on my Mako II which uses the same F6922 movement.

After unscrewing...
1st position: Hand winding - coarse feel
2nd position: Day/Date quickset (if unsure AM/PM, do not change when hour hand is between 10 and 4 to prevent damage)
3rd position: Hour and minute hand set

It's possible that the stem may be too long resulting in a 1/2 step between the handwinding and the day/date quickset.

 

^ What?

 

^ WHAAAAT?