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Old 19 April 2010, 03:30 PM   #1
MagedMS
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GMT II C Power Reserve is Unsatisfactory !

Well I keep testing my Rollies.. I donno why ?? Is this a normal behaviour or what ?? Anyway, I was testing my new GMT II C [V serial] this week for accuracy and power reserve .. Well the result for accuracy is excellent [ +2sec/24Hrs ] But the power reserve was UNSATISFACTORY [ 32~34 Hrs ] at Full Tank !!! Is this normal ? I tested the watch several times the dial face up but had the same result ! The GMT 2 specs is [ 48 Hrs ] for the 3186 movement .. Does the power reserve improves by time ? Anyone has the same problem ? I really feel bad for this result.. But I cannot deny that the movement feeling while adjusting hours/min. and winding the GMT II is TOP-NOTCH..
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Old 19 April 2010, 03:35 PM   #2
JJ Irani
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PR should be close to 48 hours.

Just give it a full 45 turns of the crown and then note date and time. Set aside for 2 days and then note the time when it stops.

You should get very close to 48 hours with this watch.

JJ
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Old 19 April 2010, 03:36 PM   #3
swatty
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Does't sound like it was fully wound to me, mine does just under 47 hours
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Old 19 April 2010, 03:44 PM   #4
16610v
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my 16610 V series tested is exactly 48 hrs (very accurate)
maybe u need to take it back to service centre in this case
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Old 19 April 2010, 04:00 PM   #5
andrew79
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Mine was also 32 hours when I checked it... but I believe it wasn't fully wound since I didn't really make 40 - 45 turns....
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Old 19 April 2010, 04:06 PM   #6
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Mine has always been in the 40s range.

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Old 19 April 2010, 06:43 PM   #7
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Quote:
Originally Posted by JJ Irani View Post
PR should be close to 48 hours.

Just give it a full 45 turns of the crown and then note date and time. Set aside for 2 days and then note the time when it stops.

You should get very close to 48 hours with this watch.

JJ
X2 That the only way to check the true power reserve is after a full manual wind.
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Old 20 April 2010, 02:18 AM   #8
MagedMS
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Fully winding My GMT2

Thank you for your comments.. It seems I don't fully wind my Rollies.. I always give it like 20~30 turns. But after making some readings, I found that over winding a Rolex, will not harm its movement..as there is a protecting clutch mechanism..
.. So let me do what JJ & Padi suggested.. I trust them as I trust my GMT2 will make it..
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Old 20 April 2010, 02:21 AM   #9
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Quote:
Originally Posted by MagedMS View Post
Thank you for your comments.. It seems I don't fully wind my Rollies.. I always give it like 20~30 turns. But after making some readings, I found that over winding a Rolex, will not harm its movement..as there is a protecting clutch mechanism..
.. So let me do what JJ & Padi suggested.. I trust them as I trust my GMT2 will make it..
Yeah,..Rolex suggests at least 40 full turns.
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Old 20 April 2010, 02:25 AM   #10
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I get 40 hours plus, but only if don't use it as back-up power supply for my lap-top
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Old 20 April 2010, 02:29 AM   #11
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Originally Posted by bewithabob View Post
I get 40 hours plus, but only if don't use it as back-up power supply for my lap-top
Wish rollies' power Reserve could be use on my hp laptop as well
cause hp's battery sucks
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Old 20 April 2010, 03:12 AM   #12
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You can actually listen and feel for when the clutch slips the winding mechanism to prevent over winding. Observe normal feel and winding noise of the crown on your watch, and after about 40 or so turns, you should notice that the "click" noise that it makes will get louder and not as consistent as before, also it should feel slightly more gritty when you turn it. Thats when you know the watch will wind no more.
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Old 22 April 2010, 01:38 PM   #13
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This was the longest 2 days I've had without my GMT!

My test started with the watch set at 5:15 am on April 19. Gave it a full 45 turns of the crown and the seconds hand started ticking after 15 revolutions. The watch came to a complete stop at 5:42 am on April 21 clocking in at 48 hours and 27 minutes.

JJ, you were spot on!

Quote:
Originally Posted by JJ Irani View Post
PR should be close to 48 hours.

Just give it a full 45 turns of the crown and then note date and time. Set aside for 2 days and then note the time when it stops.

You should get very close to 48 hours with this watch.

JJ
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Old 22 April 2010, 04:46 PM   #14
JJ Irani
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Quote:
Originally Posted by NutNut View Post
This was the longest 2 days I've had without my GMT!

My test started with the watch set at 5:15 am on April 19. Gave it a full 45 turns of the crown and the seconds hand started ticking after 15 revolutions. The watch came to a complete stop at 5:42 am on April 21 clocking in at 48 hours and 27 minutes.

JJ, you were spot on!
Great!! Now that's more like it!! Good result!!
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Old 25 April 2010, 03:58 PM   #15
MagedMS
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My GMT2 passed the second test...

Thank you all for your support & comments.. I decided to repeat the Power Reserve Test for the second time.
Result: Test started @ 8:40pm.on 22/04 - ended @ 8:40pm. on 24/04 >>> Power Reserve = 48 hrs. sharp.
...Now I feel better.. My GMT2 passed the test !!
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Old 25 April 2010, 04:14 PM   #16
JJ Irani
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Quote:
Originally Posted by MagedMS View Post
Thank you all for your support & comments.. I decided to repeat the Power Reserve Test for the second time.
Result: Test started @ 8:40pm.on 22/04 - ended @ 8:40pm. on 24/04 >>> Power Reserve = 48 hrs. sharp.
...Now I feel better.. My GMT2 passed the test !!
Now that's more like it!!
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Old 16 June 2010, 12:34 PM   #17
MortgageGuy
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With all of these power reserve tests, I decided to test my 116718 that I just purchased... It also went 48 hours, 29 minutes Damn, these things are great!
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