3135 time to reach full power reserve?

[Rick5]

Hi All,

I bought a new DJ 116200 earlier this year. I am going to try an experiment, but I figured some here might already know the answer. I have a couple of Orient watches with power reserve indicators. Without winding the watches at all from a dead stop, they reach the full 40-hour power reserve very quickly even in my sedentary desk job. I would say it takes about 4 hours max to reach full power reserve. It probably takes about 2 hours with a decent amount of activity. I wore one to a restaurant last night and within 90 minutes, it was already over 20 hours. I am going to try wearing my DJ for a few hours without any winding to see how long it will run after 2-3 hours with no winding. Any guesses on how long it will run or has anyone tried this?

Thanks,
Rick

[Terster]

I'd be curious to know the results. Please keep us posted with your findings.

[Tools]

Time worn has nothing to do with it, it is activity that winds the watch.

As soon as the winding rotor inside rotates about 600 times, the watch is wound..

[Andad]

Originally Posted by Rick5

Hi All,

I bought a new DJ 116200 earlier this year. I am going to try an experiment, but I figured some here might already know the answer. I have a couple of Orient watches with power reserve indicators. Without winding the watches at all from a dead stop, they reach the full 40-hour power reserve very quickly even in my sedentary desk job. I would say it takes about 4 hours max to reach full power reserve. It probably takes about 2 hours with a decent amount of activity. I wore one to a restaurant last night and within 90 minutes, it was already over 20 hours. I am going to try wearing my DJ for a few hours without any winding to see how long it will run after 2-3 hours with no winding. Any guesses on how long it will run or has anyone tried this?

Thanks,
Rick

Can you run all that past me one more time Rick?

Especially the part regarding your DJ??

[skkali168]

It’s like a car. I take the word of the manufacturer I guess. Like they say my car will reach 28mpg but I always get 24.
I know I can can get 28 but I never try to.

But cool experiment either way


Sent from my iPhone using Tapatalk Pro

[rq3]

Originally Posted by Tools

Time worn has nothing to do with it, it is activity that winds the watch.

As soon as the winding rotor inside rotates about 600 times, the watch is wound..

From the way the gears work, I'd always understood that the "rotor" doesn't actually have to rotate (spin around) although it can. I think it usually acts more like a pendulum, swinging back and forth. The gears then make sure that each swing, independant of direction, wind the mainspring in one direction.

Just walking with normal arm swing will wind a Rolex, while sitting at a desk with the watch effectively parallel to the desk may not, even if you are typing on a keyboard.

Am I wrong?

[tamiya]

Originally Posted by rq3

Am I wrong?

yup, rotor swings under gravity & the reverser wheels act as oneway drive so the spring is wound regardless of which way rotor spins.

Watch winder makers seem to say typical R movement needs 600-800 full turns to keep it wound /day.

However watch needs to be spun slow enough for rotor to be able to fall under gravity. If you spin the case in something faster than typical watchwinder, the rotor might not spin when centripetal force > 1G

[Tools]

Originally Posted by rq3

From the way the gears work, I'd always understood that the "rotor" doesn't actually have to rotate (spin around) although it can. I think it usually acts more like a pendulum, swinging back and forth. The gears then make sure that each swing, independant of direction, wind the mainspring in one direction.

Just walking with normal arm swing will wind a Rolex, while sitting at a desk with the watch effectively parallel to the desk may not, even if you are typing on a keyboard.

Am I wrong?

Yes, it will wind in either direction, but the total must equal ~600 full rotations for a full wind.

[tamiya]

Originally Posted by Tools

Yes, it will wind in either direction, but the total must equal ~600 full rotations for a full wind.

I be doing some thinking (dangerous!) & sums

Ok 600 full rotates

Let's say we're walking, 1 arm swing makes 1/4 rotor rotation.
Both ways so 1/2 rotation per swing.
Need 1200 steps.

Swing once per step, average stride distance ~1m.

That's 1200m = 1.2km