Karsten Fräßdorf Spirograph Sport Tourbillon: Dubai Watch Week 2019

roadwarrior

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Caliber 440 manufacture movement

Nov 28, 2019

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WatchBox Reviews

The Karsten Frassdorf Spirograph Sport Tourbillon is a stainless steel 45mm sports watch that happens to be a tourbillon. This marine chronometer for your wrist measures 13.9mm in thickness and can be customized entirely to suit the tastes of the owner. Each Montres Karsten Fräßdorf Spirograph Sport is a potential piece unique according to buyer preference.

The Karsten Frassdorf Spirograph sport includes a dial formed of multi-layer hour track, a honeycomb motif that honors German-born Fräßdorf's adopted Swiss home town of La Chaux-de-Fonds, and a base of satin metal. The lumed dial employs Super Luminova to ensure nighttime legibility.

Each Spirograph Sport tourbillon is built around Karsten Frassdorf's exclusive caliber 440 manufacture movement. The manual-wind caliber incorporates an enormous non-annular freesprung balance inspired by eighteenth and nineteenth century marine chronometers. The enormous mass of this balance helps to ensure superb accuracy, and a Straumann alloy hairspring enables antimagnetic resistance to fields of up to 1,000 Gauss; shock resistance is rated up to 5,000Gs.

Frassdorf's hand-formed hairspring features both inner Grossman curve and outer (overcoil) Philips curve for concentric beating in any position. Each caliber 440 includes a balance with proprietary compensation features that ensure isochronous behavior regardless of temperature. This pillar movement literally is constructed like vintage navigation clocks, and a stopworks limits the potentially 70-hour power reserve to 44 hours, which is the chronometric power reserve of the mainspring.


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[h=2]Calibre 440[/h]
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[h=2]Fiche technique[/h] Case diameter : 45.00 mm
Case height : 13.90 mm
Encasing diameter : 38.40 mm
Movement height : 8.90 mm

70 hours power reserve barrel with special Geneva centring system, effective power reserve of 44 hours due to the Geneva stop work

One-minute tourbillon with internal geared wheel and traditional sea chronometer timepiece inertia balance with a double curved free-spring hairspring

Escapement wheel and anchor arbor with Incafix® cap jewels

5000 G shock-protected movement with special protecting devices for the dial, main plate and winding stem

Pillar movement with 34 jewels [h=2]Made in La Chaux-de-Fonds (Suisse)[/h]
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Very impressive, and intriguing! Thanks for posting this, Mike.:hat:
 
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