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Old 25 April 2010, 12:33 PM   #1
bewithabob
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GMTIIc Power Reserve Test

Just concluded a power reserve test of my GMCIIc M serial-

Beginning with the watch at a dead stop, I wound the stem 45 turns, then left it sitting face up, without moving it, at average temperature of 70 degrees F

Start 19:45:00 April 22nd
Stop 18:52:03pm April 24th

47 hours, 07 minutes 03 seconds

Will do exact same test with all my watches.

Am curious if other TRF members get similar results....
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Old 25 April 2010, 12:37 PM   #2
Colnago
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That's a cool test, almost two whole days.....pretty good....I am planning on doing these tests as well on mine, waiting for a Tudor to arrive with the Valjoux 7750 movement and I am doing the test on that for definite, the power reserve is quoted at between 40 and 45 hours so I am interested to see....I also have a GMT IIc so I will do it on that too.....and probably the others as well......interesting
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Old 25 April 2010, 12:40 PM   #3
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I'm testing mine right now after seeing JJs thread.....

Quote:
Originally Posted by bewithabob View Post
Just concluded a power reserve test of my GMCIIc M serial-
Am curious if other TRF members get similar results....
Will post the results Monday.
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Old 25 April 2010, 12:55 PM   #4
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See some results here.

http://www.rolexforums.com/showthrea...=power+reserve
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Old 25 April 2010, 01:07 PM   #5
Colnago
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Nice link Eddie.....I must have missed your tests...the Daytona did great eh....even with the chrono running it still topped 71 hours 30 mins fantastic
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Old 25 April 2010, 01:37 PM   #6
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I was also surprised at how little difference running the chrono made. Previous posts I had read were talking about a 20% power reduction.
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Old 25 April 2010, 03:22 PM   #7
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Quote:
Originally Posted by therolexguy View Post
Will post the results Monday.
Todd

I posted my results to JJ's thread, which stimulated me.
Next, will do each of my Daytonas separately, then each of my IWCs separately. The Cartier which has a Valjous movement, and finally the DATEJUST.

As I keep going, I think it will get even more interesting, when finally I get to the pocketwatch that I inherited from my grandfather (serviced within the past 5 years I think).




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meteor flying to Earth onto my wrist...

116509 Daytona Meteorite, 116520 Daytona Black, 116710 GMTIIC, 16013 DATEJUST,
CARTIER SANTOS 100 W20090X8, IWC Big Pilot, IWC Top Gun



"Everything works out in the end. If it hasn't worked out, it's not the end."
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Old 25 April 2010, 04:17 PM   #8
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Quote:
Originally Posted by bewithabob View Post
Just concluded a power reserve test of my GMCIIc M serial-

Beginning with the watch at a dead stop, I wound the stem 45 turns, then left it sitting face up, without moving it, at average temperature of 70 degrees F

Start 19:45:00 April 22nd
Stop 18:52:03pm April 24th

47 hours, 07 minutes 03 seconds

Will do exact same test with all my watches.

Am curious if other TRF members get similar results....
That is a fair result, but you might want to carry out the test again. You should have got closer to 48 hours.

JJ
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Old 25 April 2010, 04:17 PM   #9
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GMT2 PR Test

I've just finished testing my GMT2 for the second time.. After fully winding the movement, now it's [ 48 Hrs. ] sharp.
My test link: http://www.rolexforums.com/showthread.php?t=125365
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Old 26 April 2010, 12:33 AM   #10
bewithabob
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Originally Posted by directioneng View Post
Thanks! Am going to keep going and include some additional models not on your list.

:thumbsu p:
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meteor flying to Earth onto my wrist...

116509 Daytona Meteorite, 116520 Daytona Black, 116710 GMTIIC, 16013 DATEJUST,
CARTIER SANTOS 100 W20090X8, IWC Big Pilot, IWC Top Gun



"Everything works out in the end. If it hasn't worked out, it's not the end."
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Old 26 April 2010, 12:37 AM   #11
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Quote:
Originally Posted by JJ Irani View Post
That is a fair result, but you might want to carry out the test again. You should have got closer to 48 hours.

JJ

Yep. Just another excuse to wear one of my IWCs. Maybe will wear the Top Gun this time....
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meteor flying to Earth onto my wrist...

116509 Daytona Meteorite, 116520 Daytona Black, 116710 GMTIIC, 16013 DATEJUST,
CARTIER SANTOS 100 W20090X8, IWC Big Pilot, IWC Top Gun



"Everything works out in the end. If it hasn't worked out, it's not the end."
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Old 27 April 2010, 11:27 AM   #12
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JJ would be proud...

I just finished my new GMTIIC timing test:

Started Saturday 4/24 at 12:00 noon
it stopped Monday 4/26 @ 11:43:38 a.m.

According to my calculations about 47 hours, 44 minutes.....not bad.
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Old 27 April 2010, 08:30 PM   #13
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I got 40 hours out of my Sub the other day, so doing it over 3 days to get the average..
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Old 28 April 2010, 03:24 AM   #14
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Quote:
Originally Posted by therolexguy View Post
I just finished my new GMTIIC timing test:

Started Saturday 4/24 at 12:00 noon
it stopped Monday 4/26 @ 11:43:38 a.m.

According to my calculations about 47 hours, 44 minutes.....not bad.
That's a good result, buddy................and just what would be expected from such a watch!!

JJ
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