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TheDude · 17 July 2010, 11:25 PM

I used the USNO Master Clock to check.

In 2 days, it gained only 3 seconds total. Awesome for a 37 year old watch, especially considering I only wore it about 7 or 8 hours out of that 48 hour stretch. The rest of the time it was resting flat on its back. It had some temp shocks too - going back and forth from high 90s DC heat to ~70F air conditioning.

Thanks Bob!

mike · 17 July 2010, 11:40 PM

That is fantastic.

Indeed my vintage pieces are among the most accurate I own.

I always have to laugh when I read about how much "better" some modern pieces are.

The 15xx is such a rugged, accurate workhorse with little of the slack found in the 31xx movements.

Congrats on a supurb timepiece.

TheDude · 18 July 2010, 12:04 AM

Quote:

Originally Posted by mike

That is fantastic.

Indeed my vintage pieces are among the most accurate I own.

I always have to laugh when I read about how much "better" some modern pieces are.

The 15xx is such a rugged, accurate workhorse with little of the slack found in the 31xx movements.

Congrats on a supurb timepiece.

Thanks Mike!!!

tgoose1 · 18 July 2010, 01:29 AM

Because these movements run slower, around 19,500bph, they are easy to positionally regulate vs 3135's.

Dan Pierce · 18 July 2010, 01:39 AM

Gotta love that kind of performance.

dP

TheDude · 18 July 2010, 02:31 AM

Quote:

Originally Posted by tgoose1

Because these movements run slower, around 19,500bph, they are easy to positionally regulate vs 3135's.

The 3186 in my GMT-IIc (nearly 3 years old) is running dead-on accurate for more than 24 hours.

I generally don't ever test like this. I'm rather surprised to see such accuracy.

padi56 · 18 July 2010, 03:48 AM

Quote:

Originally Posted by mike

That is fantastic.

Indeed my vintage pieces are among the most accurate I own.

I always have to laugh when I read about how much "better" some modern pieces are.

The 15xx is such a rugged, accurate workhorse with little of the slack found in the 31xx movements.

Congrats on a supurb timepiece.

Agree with Mike IMHO the 15XX series the finest Rolex has built very accurate and all without the aid of a Parachrom hairspring.

therolexguy · 18 July 2010, 03:55 AM

That sounds perfect.

CaveDiver · 18 July 2010, 04:45 AM

What is interesting with these old mechanical movements is that overtime you can see the accuracy and precision. The accuracy can match most mid level quarts but not precision

Dalton · 18 July 2010, 08:13 AM

That's simply Outstanding!

CaveDiver · 18 July 2010, 10:12 AM

Here is time chart of my recent serviced 5512 with a 1560 cal movement over 55 days. It stopped in the middle of the night on the 56 day do to short wear times over a few days. There were a few big swings but the overall average was pretty good. My observation leads me to believe the watch gains time when power is low and slows down on full charge.

TheDude · 18 July 2010, 09:23 PM

Quote:

Originally Posted by CaveDiver

My observation leads me to believe the watch gains time when power is low and slows down on full charge.

Yes, that jives with what I saw. First day it was -1 sec. Second day it was +4 for a net of +3. FWIW, mine is a 1570 mvmt.

steubi1 · 23 July 2010, 07:20 AM

Great!

The Swiss mechanical movements had their really great time before quartz went up-----late sixties.

You could take what you want, anything top!

Nowadays, we start again to discover traditional watchmaking, I have been in this business for 4 years.

And Rolex is still THE REFERENCE, for all of us.

Thanks and regards
Tom

Lol-x · 23 July 2010, 09:05 AM

What is the difference between the 1560 and 1570 Calibre movements? Is it just the hacking feature?

CaveDiver · 23 July 2010, 01:23 PM

Quote:

Originally Posted by Lol-x

What is the difference between the 1560 and 1570 Calibre movements? Is it just the hacking feature?

Stevo,
The most observable difference is the beat rate. A 1560’s balance beats at 18k bph were the 1570 beats at 19.8k bph.
The 1560 is a non-hacking movement. I believe the early 1570’s are non-hacking and later produced are hacking (I think hacking started showing up around ~’70-72 in subs?).
I’m sure there are other bits and bobs that are different, but those are ones I remember reading about.

Lol-x · 23 July 2010, 03:26 PM

Thanks for that info mmmmmm less beats mean less wear

TheDude · 24 July 2010, 08:40 AM

FWIW, mine hacks - appropriate for a '73 serial.

vintage69 · 24 July 2010, 01:24 PM

My 69 Date has the hacking movement.

17 July 2010, 11:25 PM	#1
TheDude "TRF" Member Join Date: Oct 2007 Location: DC Area, USA Watch: IIc,1680 Red,16660 Posts: 4,492	1680 is only +3 sec after 48 hours. Thanks Bob!!! I used the USNO Master Clock to check. In 2 days, it gained only 3 seconds total. Awesome for a 37 year old watch, especially considering I only wore it about 7 or 8 hours out of that 48 hour stretch. The rest of the time it was resting flat on its back. It had some temp shocks too - going back and forth from high 90s DC heat to ~70F air conditioning. Thanks Bob!

18 July 2010, 01:39 AM	#5
Dan Pierce 2024 Pledge Member Join Date: Dec 2006 Real Name: D'OH! Location: Kentucky Watch: Rolex-1 Tudor-3 Posts: 36,171	Gotta love that kind of performance. dP __________________ TRF Member# 1668 Bass Player in TRF "AFTER DARK" Bar & NightClub Band Commander-in-Chief of The Nylon Nation The Crown & Shield Club Honorary Member of P-Club

23 July 2010, 09:05 AM	#14
Lol-x Facilitator Join Date: Nov 2005 Real Name: Steve Location: Omnipresent Posts: 33,555	What is the difference between the 1560 and 1570 Calibre movements? Is it just the hacking feature? __________________ *Most folks are about as happy as they make up their minds to be.* ~Abraham Lincoln Nothing compares to the simple pleasure of a bike ride. ~John F. Kennedy ROLEXploitation - yeah I'm a victim

23 July 2010, 03:26 PM	#16
Lol-x Facilitator Join Date: Nov 2005 Real Name: Steve Location: Omnipresent Posts: 33,555	Thanks for that info mmmmmm less beats mean less wear __________________ *Most folks are about as happy as they make up their minds to be.* ~Abraham Lincoln Nothing compares to the simple pleasure of a bike ride. ~John F. Kennedy ROLEXploitation - yeah I'm a victim

17 July 2010, 11:40 PM	#2
mike "TRF" Member Join Date: Jul 2005 Posts: 22,683	That is fantastic. Indeed my vintage pieces are among the most accurate I own. I always have to laugh when I read about how much "better" some modern pieces are. The 15xx is such a rugged, accurate workhorse with little of the slack found in the 31xx movements. Congrats on a supurb timepiece.

18 July 2010, 01:29 AM	#4
tgoose1 "TRF" Member Join Date: May 2009 Location: Louisiana Watch: Rolex Submariner Posts: 668	Because these movements run slower, around 19,500bph, they are easy to positionally regulate vs 3135's.

18 July 2010, 03:55 AM	#8
therolexguy 2024 SubLV41 Pledge Member Join Date: Jun 2008 Real Name: Todd Location: US Posts: 3,528	That sounds perfect.

18 July 2010, 04:45 AM	#9
CaveDiver "TRF" Member Join Date: Dec 2009 Location: Dallas Posts: 1,075	What is interesting with these old mechanical movements is that overtime you can see the accuracy and precision. The accuracy can match most mid level quarts but not precision

18 July 2010, 08:13 AM	#10
Dalton TechXpert Join Date: Mar 2008 Real Name: Dal Location: Seattle Watch: 168000 Posts: 1,614	That's simply Outstanding!

18 July 2010, 10:12 AM	#11
CaveDiver "TRF" Member Join Date: Dec 2009 Location: Dallas Posts: 1,075	Here is time chart of my recent serviced 5512 with a 1560 cal movement over 55 days. It stopped in the middle of the night on the 56 day do to short wear times over a few days. There were a few big swings but the overall average was pretty good. My observation leads me to believe the watch gains time when power is low and slows down on full charge.

23 July 2010, 07:20 AM	#13
steubi1 "TRF" Member Join Date: Aug 2008 Real Name: Tom Location: Switzerland Watch: too many Posts: 1,150	Great! The Swiss mechanical movements had their really great time before quartz went up-----late sixties. You could take what you want, anything top! Nowadays, we start again to discover traditional watchmaking, I have been in this business for 4 years. And Rolex is still THE REFERENCE, for all of us. Thanks and regards Tom

24 July 2010, 08:40 AM	#17
TheDude "TRF" Member Join Date: Oct 2007 Location: DC Area, USA Watch: IIc,1680 Red,16660 Posts: 4,492	FWIW, mine hacks - appropriate for a '73 serial.

24 July 2010, 01:24 PM	#18
vintage69 "TRF" Member Join Date: Jul 2008 Real Name: Bob W Location: sunny sw Watch: 1969 p date Posts: 382	My 69 Date has the hacking movement.

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