martes, 28 de septiembre de 2010
domingo, 9 de agosto de 2009
Calibre Miyota 9015
- Ligne 11-1/2
- Grosor 3.9 mm
- 3 agujas y fecha
- 28.800 BPH
- 24 rubíes
- Automático con posibilidad de cuerda manual
Winds in BOTH directions
Hacking movement
3 hand w/date right now, but will also be offered in a multitude of complications such as Power Reserve and Master Calendars.
As it stands, it appears that Android will be the first to showcase this exceptional new movement. Wing tested this movement and says that it ran within 5spd, so by his calculations, it should be very easy to have these running within COSC specs on a regular basis.
domingo, 24 de mayo de 2009
Seiko Credor (video)
jueves, 21 de mayo de 2009
Entusiasta español fabrica reloj de madera
9S67
Calibre 9S67 de SeikoSeiko Spring Drive (video)
From Wikipedia, the free encyclopedia
The Spring Drive is a novel watch movement that was developed by Seiko Epson[1] through collaboration with Seiko Instruments and Seiko Holdings.
It uses a mainspring, barrel, automatic winder and stem winding like in a mechanical watch to store the watch energy. The conventional escapement is replaced with a device that Seiko calls a Tri-synchro Regulator to regulate the unwinding of the mainspring. The regulator controls the use of the three forms of energy used in the Spring Drive mechanism; the mechanical power of the mainspring, the electrical energy generated from this mechanical power, and the electromagnetic energy that governs the rotation of the glide wheel. The energy produced by the glide wheel is used to power a control circuit and quartz crystal oscillator, which in turn regulates the electro-mechanical braking of the glide wheel.
The glide wheel's speed is sampled 8 times per second (i.e. each time it makes a complete revolution around the regulator) and compared with the reference quartz signal by the circuit. A variable braking force is continuously applied to regulate the glide wheel's frequency. This is the only movement with a time-only feedback (or phase-locked) loop in existence today.
The Tri-synchro Regulator's innovations result in a watch where the hands glide instead of ticking as in a conventional mechanical or quartz watch. This is because the movement never stops as in a traditional escapement, it is slowed to the proper speed by the brake. The movement is specified to 1 second accuracy per day. However, 1-2s per week is commonly reported by owners.
The movement is used on the Spring Drive International collection and in some watches of Grand Seiko, CREDOR, GALANTE, IZUL and PROSPEX series. Complications include moon phase, power reserve, chronograph, sonnerie, GMT and calendar functions. These watches are fairly expensive, with the least complicated models costing several thousand dollars. The top of the line Credor Sonnerie in Rose Gold is over $150,000 and can be considered a grande complication. (see collection at http://www.seiko-watch.co.jp/gs/collection/index.html)
