Based in Switzerland, MB&F is an artistic and micro-engineering concept laboratory in which collectives of independent horological professionals are assembled each year to design and craft radical Horological Machines. The brand is world renowned for its flagship models such as HM1, HM2, HM3, HM4, HM5, Legacy Machines, Music machines and the Performance art series.

Launched in 2012, the Horological Machine No5 is inspired from the futuristic designs of 1970’s. Now the brand unveils a new black version of Horological Machine No.5 incorporating a more innovative material, CarbonMacrolon.

While Horological Machine No.5’s striking, angular case architecture faithfully echoes the form of the streamlined supercars that inspired it; those sharp corners would make a black PVD coating more susceptible to being scratched than a more conventional design.

So rather than take the easier path of adding a black PVD coat to the existing HM5 case, MB&F has chosen CarbonMacrolon, a solid black material that could be polished and finished like metal. Solid and hard as steel, CarbonMacrolon is a dense black polycarbonate resin reinforced with carbon nano-tubes.  It can be polished and finished like steel, feels as solid as steel and is as hard as steel. And it is black right through, so no surface coatings to scratch off.

Inspired by the features of a Super car styling, the Horological Machine No5 CarbonMacrolon (HM5 CM) boasts bi-directional Jumping hours, compartmentalised Engine in its own water-resistant inner case; functioning louvres allowing light in to charge the Super-LumiNova indication discs; and water-draining exhaust ports. All these features house in a sleek, polished and satinised, pitch-black CarbonMacrolon case with an eye catching iridescent purple automatic winding rotor and complementary purple highlights around the displays.

It’s no exaggeration to state that when Bayer introduced the revolutionary polycarbonate material Makrolon® in 1963, it changed the world. The virtually unbreakable material is used in an incredible range of diverse applications including CDs, water-resistant camera housings, medical devices, contact lenses, sunglasses, laptop cases, aircraft wing and fuselage components, canopies for jets and helicopter windscreens. With its high dimensional stability, excellent heat resistance, ease of moulding, long life and eco-friendly reusability, Makrolon® quickly became, and still is, one of the most versatile thermoplastics ever invented.

Developed specifically for MB&F, CarbonMacrolon is a composite material composed of an anthracite polymer matrix injected with carbon nanotubes, which add strength and rigidity. Carbon nanotubes offer superior tensile strength and stiffness than traditional carbon fibre reinforcing. MB&F’s CarbonMacrolon is a solid black material that is heavy, hard, and can be polished and finished like metal.

The wedge-shaped case of HM5 has unmistakable references to the low-slung supercars of the epoch.  The purpose of the louvres on these awe-inspiring cars was to restrict sunlight (and heat) from entering the near horizontal rear window. The functional louvres on HM5 do the  opposite in that they open to allow light down onto the Super-LumiNova numbers on the  hours and minutes indication disks to charge them. The disks are actually flat on top of the movement (under the louvres), not vertically at the front of the case where they appear to be thanks to some optical magic. Opening and closing the louvres also changes the dial’s light intensity. The louvres are opened and closed by a slide set into the side of the case.

Another distinguishing feature of supercars are large dual exhaust pipes that are usually seen accompanied by a roar of engine noise and smoking rubber. But HM5’s exhausts are not there to expel combustion gases in a throaty roar, but to drain water in case.

And no futurist icon of the 1970s is complete without a jet. HM5’s ergonomically sculptured crown looks as though it could just as easily power a rocket to the Alpha Centauri, or the Batmobile, as it powers Horological Machine No. 5 CarbonMacrolon into the future.To minimise potential damage, the crown winding stem is guided by three radial bearings, ensuring it can only be pulled/pushed when perpendicular to the movement.

The actual hour and minute time displays on HM5, i.e. the numbered rotating disks, are relatively simple: overlapping disks (one for hours, one for minutes) are completely covered in Super-LumiNova, which then has large 8mm numerals created by masking all of the lume except for the numbers.

The disks rotate flat on top of the movement and yet we see the time indications vertically in a ‘dashboard’ at the front of the case. To achieve this, MB&F worked with a high-precision optical glass supplier to develop a sapphire crystal reflective prism that bent light from the disks 90° as well as magnify it by 20% to maximise legibility.

The sapphire prism is wedge-shaped with the angles precisely calculated to ensure that light is reflected from the horizontal indications to the vertical rather than refracted (bent). A convex lens at the front provides the magnification. Sapphire crystal is much more difficult to work to optical precision than glass and it took considerable development and meticulous care in production to create crystals that reflected and bent light without the slightest distortion.

Because the time is reflected, the numbers are printed on the disks as mirror images so that they display correctly on the ‘dial’. The glass on the front is not black but dark-tinted so that it is possible to see time arriving and departing and the numbers have an iridescent purple outline, reminiscent of the glowing instruments of a supercar on a high-speed road trip at night.

The vertical forward-facing display makes HM5 an excellent driver’s watch as there is no need to lift your wrist from the steering wheel to read the display.

As with any supercar, the best often lies under the hood and looking below the surface of the Horological Machine No. 5 CarbonMacrolon case reveals a second case beneath. The reason for housing the Engine in an inner container is for water resistance. Those supercar louvres let in water as well as light − the reason for those dual exhaust ports – so to protect the high-performance Engine from moisture as well as shocks, it is housed in its own stainless steel shell. This inner case is similar to the ridged chassis of a car on which the external coachwork/body is attached.

Jean-François Mojon, Vincent Boucard and their team at Chronode developed the HM5 Engine/complication. The jumping hours are bidirectional, enabling the time to be easily set both forwards and backwards. The two mineral glass disks of the hours and minutes are supported by a flat wide bridge. The disks overlap as much as possible to maximise their diameter and space for large legible numerals.

Turning HM5 CM over reveals the Engine, with its stunning iridescent purple 22k gold battleaxe shaped ‘mystery’ winding rotor, fast oscillating balance and stunning hand-finished  bridges, visible through the sapphire crystal display back set into the water-resistant Engine  container.

Technical details

Three-dimensional horological engine developed by Jean-François Mojon and Vincent Boucard of Chronode
Powered by a Sowind gear train
Iridescent purple 22k gold battle-axe ‘mystery’ automatic winding rotor
Power reserve: 42 hours
Balance frequency: 28,800bph/4Hz
Number of components: 224
Number of jewels: 30
Engine housed in a water-resistant, stainless steel inner container

Functions / Indications
Minutes and bi-directional jumping hours displayed by reflective sapphire crystal prism with integrated magnifying lens
Slide to open/close louvres on case top

CarbonMacrolon with internal water-resistant steel engine container
Slide button to open/close louvres
Exhaust ports to drain water
Dimensions: 51.5mm x 49mm x 22.5mm
Number of components: 80
Water resistance of engine container: 30m / 90’ / 3atm
Smoked optical grade sapphire crystal with anti-reflective coating and 20% magnification
Sapphire crystal on back with anti-reflective treatment on both faces

Strap & Buckle
Sculpted rubber strap, titanium tang buckle

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