Seiko

[george_]

Seiko, while exploring and expanding the boundaries of automatic chronograph, is very much in touch with its horological legacy. And as they say, you only start from a clean sheet if you have nothing worth keeping. The mile-stone that is the Cal. 6139/8 provided the perfect starting point and inspiration for the Ca. 9R86, whose winding rotor is clearly shaped to pay homage to a true classic.



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[george_]

The Cal. 6139 (chronograph, 60 sec, 30 min) and its sibling, Cal. 6138 (chronograph, 60 sec, 30 min, 12 hr… released 1970), were part of the 61xx line of calibres, manufactured by Suwa Seikosha. The family of movement encompasses a broad range of calibres, from the simple (Cal. 6105 that powered the famous Divers 6105), the slightly complicated (Cal. 6117 with GMT), the high-end (Cal. 6138/9 column-wheel chronographs), to the highest grade (Cal. 6145/6 Hi-Beat 36’000 in the 61GS).

The 61xx featured the patented Magic-Lever, an extremely efficient automatic winding system, superior in performance to the Swiss Eterna system that uses gears. The Magic-Lever transmits and converts the bi-directional rotations of the winding rotor into uni-directional turns to wind the mainspring.

[george_]

The reason you probably don't hear much of the 6139, other than the fact that it was produced by Seiko, is that it went out of production around 1980. Another reason, there were many case and dial variations, obscuring the establishment of any identity. That said, the 6139 is a robust movement, and great examples in good working condition can be found with relatively little effort these days

[charisps]

[george_]

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[george_]

imagen

[Frogman]

Within a couple of months of Basel 1969, Seiko released Cal. 6139, which utilized a new coupling system, developed and patented by Seiko, for engaging the chronograph, such that backlash is eliminated. It was a revolutionary idea--the world’s first fully-integrated automatic chronograph with a vertical clutch mechanism. And while Seiko 6139 may not have been the first to be announced, it was indeed the first to be available to the public by August 1969, beating both the Zenith El Primero and the Calibre 11/Chronomatic to the stores.



hosting imagenes

Στοιχίζοντας πόσες φορές κάτω από τους αντιπάλους.....;;;;
Μη τα διαβάσουν αυτά διάφοροι ρολεξάκηδες, θα τους σηκωθεί η τρίχα.... "ιεροσυλία" και άλλα τέτοια ευτράπελα!

[stelakos]

 vertical clutch coupling was invented in Switzerland in the late 1930s, further developed by Citizen and Seiko in the 1960s and 1970s, and thus is an established if uncommon solution. This means of engagement eliminates the undesirable seconds hand "jump" and the wear of clashing teeth of all but the most finely tuned transfer wheel designs, and is thought to reduce the load of the running chronograph mechanism. Though still less classical in form than a transfer wheel, it has received greater acceptance than the tilting pinion design from connoisseurs.

[george_]

αλλος ενας λογος λοιπον!γιατι δεν υπαρχει αυτη η μηχανη στη συλλογη τους,σημερα?

[stelakos]

[george_]

vertical clutch coupling was invented in Switzerland in the late 1930s, further developed by Citizen and Seiko in the 1960s and 1970s, and thus is an established if uncommon solution. This means of engagement eliminates the undesirable seconds hand "jump" and the wear of clashing teeth of all but the most finely tuned transfer wheel designs, and is thought to reduce the load of the running chronograph mechanism. Though still less classical in form than a transfer wheel, it has received greater acceptance than the tilting pinion design from connoisseurs.

το εχουμε πει και αυτο,αλλα το πρωτο λειτουργικο ηταν της seiko!

[stelakos]

vertical clutch coupling was invented in Switzerland in the late 1930s, further developed by Citizen and Seiko in the 1960s and 1970s, and thus is an established if uncommon solution. This means of engagement eliminates the undesirable seconds hand "jump" and the wear of clashing teeth of all but the most finely tuned transfer wheel designs, and is thought to reduce the load of the running chronograph mechanism. Though still less classical in form than a transfer wheel, it has received greater acceptance than the tilting pinion design from connoisseurs.

το εχουμε πει και αυτο,αλλα το πρωτο λειτουργικο ηταν της seiko!

πιο πολυ το  εβαλα για την δευτερη προταση αρχηγε ηρέμησε

[stelakos]

[george_]

χαλαρος ειμαι

[stelakos]

χαλαρος ειμαι

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