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djw2122000 · 20 February 2011, 01:39 AM

someone has a vintage rolex, is considering buying a winder and wants to be sure they don't risk overwinding. thx

Rikki · 23 February 2011, 02:01 AM

There is really no such thing as a clutch. There are setting mainsprings which attach to a pin on the inside of the barrel and can only be would till they stop. A slipping mainspring is installed in an automatic watch that has no inner pin to hook or catch the mainspring but a bridle that puts extra pressure on the barrell so that it slips when the mainspring is at full wind. This is how any automatic watch works they can't be overwound . Rik

Tools · 26 February 2011, 06:29 AM

Quote:

Originally Posted by djw2122000

someone has a vintage rolex, is considering buying a winder and wants to be sure they don't risk overwinding. thx

Exactly as Rik says... All Rolex automatics have a slipping bridle mainspring (clutch), and so you can't really over-wind one with a winder...

However, if you set your winder so it is always "winding" the watch, you will be slipping the mainspring over and over inside the mainspring barrel and it could result in premature wear of the inside of the brass barrel......

tulgsT · 26 February 2011, 06:53 AM

Orbita has a technology called rotorwind on it's Sparta series which only winds the watch (back and forth swaying motion) for 30 seconds followed by a 15min rest period. This may be the solution to concerns with a continuous watch wind.

Tylden Reed · 2 March 2011, 12:41 AM

Has Rolex auto mvmts always used mainspring clutch to prevent overwinding? Whilst it is true that the modern perpetual (automatic) movement has a slipping attachment on the end of the mainspring within the barrel, wrist watches have not always had such an attachment. I am at the moment restoring an early 8 3/4"' Rolex perpetual with a 'non automatic' mainspring fitted. The wearer can indeed wind the spring to the top and not wind further, however, the automatic work has a slipping clutch over the ratchet wheel that should start slipping when the barrel arbor has turned 5 complete turns. The period of slip is controlled by the grade of lubricant used. I'm not alone in being grateful that the design was not used more widely. The base movement measures 8 3/4"' but is stamped '9 3/4"' Hunter' and the O/D of the automatic-work measures 10 1/2"'. The movement is in a steel Oyster case with 5 fig. serial number 52*** Probably Model 1858. Tylden.

20 February 2011, 01:39 AM	#1
djw2122000 "TRF" Member Join Date: Jan 2010 Location: cleveland, ohio Watch: rolex datejust Posts: 26	Has Rolex auto mvmts always used mainspring clutch to prevent overwinding? someone has a vintage rolex, is considering buying a winder and wants to be sure they don't risk overwinding. thx

23 February 2011, 02:01 AM	#2
Rikki TechXpert Join Date: Jun 2009 Real Name: Rik Dietel Location: Seminole Fla Watch: 5512 s/s Sub Posts: 1,818	There is really no such thing as a clutch. There are setting mainsprings which attach to a pin on the inside of the barrel and can only be would till they stop. A slipping mainspring is installed in an automatic watch that has no inner pin to hook or catch the mainspring but a bridle that puts extra pressure on the barrell so that it slips when the mainspring is at full wind. This is how any automatic watch works they can't be overwound . Rik __________________ Century 21 Certified watchmaker Omega Service Provider Trained Omega OWME Certified. Rolex Parts Account Holder.

26 February 2011, 06:53 AM	#4
tulgsT Member Join Date: Sep 2010 Location: New Jersey Posts: 95	Orbita has a technology called rotorwind on it's Sparta series which only winds the watch (back and forth swaying motion) for 30 seconds followed by a 15min rest period. This may be the solution to concerns with a continuous watch wind.

2 March 2011, 12:41 AM	#5
Tylden Reed TechXpert Join Date: Jul 2009 Real Name: Tylden Reed Location: Kent UK Watch: GMTII and more Posts: 175	Has Rolex auto mvmts always used mainspring clutch to prevent overwinding? Whilst it is true that the modern perpetual (automatic) movement has a slipping attachment on the end of the mainspring within the barrel, wrist watches have not always had such an attachment. I am at the moment restoring an early 8 3/4"' Rolex perpetual with a 'non automatic' mainspring fitted. The wearer can indeed wind the spring to the top and not wind further, however, the automatic work has a slipping clutch over the ratchet wheel that should start slipping when the barrel arbor has turned 5 complete turns. The period of slip is controlled by the grade of lubricant used. I'm not alone in being grateful that the design was not used more widely. The base movement measures 8 3/4"' but is stamped '9 3/4"' Hunter' and the O/D of the automatic-work measures 10 1/2"'. The movement is in a steel Oyster case with 5 fig. serial number 52*** Probably Model 1858. Tylden.

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