MB&F: HM8 Mark 214 June 2023
A decade after the first automotive-inspired MB&F Machines, MB&F unveils the new HM8 Mark 2, the most technologically evolved model to date. All the most important details above in the slides.
MB&F’s connection to cars runs deep, starting in 2012 with the HM5, followed by the HMX in 2015, and the HM8 in 2016. Each of these iterations is linked by its instantly recognizable speedometer-style display on the side of the case that recalls the daring and futuristic design of the 1970s.
He found inspiration in a crazy design by Amida, called the Amida Digitrend, a watch that was unveiled in 1976, just before the company went bankrupt. Working on a similar idea, MB&F employed a sapphire prism that would allow the jumping hours and sweeping minutes to be indicated vertically, when they were actually flat as a pancake on top of the movement. The time was indicated in a window that resembled an old-style speedometer on the front of the case that could also be easily viewed while driving, no less. Unlike the Amida, with its discs next to each other, the MB&F HM design features discs that are one on top of the other, maximising the size of the digits and therefore the legibility.
The idea didn’t end there, as the mission was to make the numerals look almost digital or electronic. This was achieved using sapphire disks that were coated with a black metallization, leaving the numerals clear. Super-LumiNova was then added underneath the sapphire disc, so that the luminescence would be completely flat, not bulbous as it appears when it is applied to the dial. It is interesting to note that the numerals had to be created back-to-front as they get reversed in the prism.
This system came to life in the HM5 with opening and closing slats that allowed the light into the movement to charge the luminescence. These slats were inspired by Marcello Gandini’s design for the Bertone Lamborghini Miurawith its louvers on the rear window that gave the car its futuristic aesthetic.
These slats were dropped in the following model – the HMX – in favour of a sapphire crystal cover that gave a partial view on the engine beneath. This piece was inspired by another Italian coach builder – Touring Superleggera – and was equipped with miniature oil caps that could be unscrewed and filled with watchmaking oils
Next came the HM8 ‘Can-Am’ with a sapphire crystal that also allowed a view on the spinning rotor. It was this movement, based on a Girard-Perregaux calibre, that is also providing the base for the brand-new HM8 Mark 2. The HM8 took its design cues from Can-Am cars (hence the nickname) from the famous Canadian American Racing Championship. The cars’ unusual design and distinctive roll bars became the inspiration for the watch’s two titanium roll bars.
The HM8 Mark 2, on the other hand, finds inspiration in different sources, such as the iconic Porsche 918 Spyder for the shape of the body, and the Zagato double bubble for the sapphire crystal.
A CHASSIS CONSTRUCTION
Not only did the design codes of these timepieces find their inspiration in the automobile world, but the construction did too. The HM5 and HM8 Mark 2 are built from an independent water-resistant chassis to which the body panels of the watch are added, while the HMX and HM8 favoured a monobloc construction.
For the new HM8 Mark 2, this coachwork comes in a choice of white or British racing green CarbonMacrolon that has a matt finish on the top and a high polish on the sides. The white version is paired with a green CVD rotor and light green minute markers, while the British racing green version comes with a red gold rotor and balance wheel and turquoise minute markers and is limited to 33 pieces.
Developed specifically for MB&F, CarbonMacrolon is a composite material composed of a 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 material that is hard and can be coloured, polished, bead-blasted, lacquered, satin-finished…
In addition to all these attributes, it weighs eight times less than steel, making it extremely versatile and interesting from both a technical and design point of view.
UNDER THE HOOD
Like any super- or hyper-car, a lot of the technology inside the HM8 Mark 2 is not visually obvious, starting with the titanium chassis, which is extremely complicated to mill. Even in stainless steel, it would have been extremely complex to make, but the hardness of this alloy really put MB&F’s technicians to the test.
The same is true of the CarbonMacrolon body panels, which due to the small production quantities, could only be milled from a block, adding another layer of complexity to the watch’s coachwork.
A long line of MB&F timepieces has pushed the limits of what is physically possible in terms of sapphire crystal production, and the HM8 Mark 2 is no exception. The creation of this double-curved sapphire has reached a complexity that is 30 to 40 times more expensive than a dome sapphire. Only one supplier agreed to take on the challenge. During the many hours required to produce each sapphire crystal, the risk of breakage is incredibly high – and if it is going to break, it is always at the very last moment, much to the utter desperation of all concerned. Once safely completed and fitted into the timepiece, however, it is just as robust as the sapphire crystal on any sports watch.
And last, but not least, the battle axe rotor that powers the movement is incredibly complex to make as one of the 22-carat gold blades is only two-tenths of a millimetre thick. It cannot possibly be machined so it had to be stamped, with the engraving already incorporated into the stamp.
A WORLD-PREMIERE CROWN
Not under the hood, but equally hidden, is a brand-new type of crown that has a sort of “double de-clutch” system, to coin an automobile term. It works by pushing the crown in and turning it three-quarters of a turn to release it. This has the advantage of gaining space and providing additional security to the system, which is a genuine advantage for a sports watch.
The HM8 Mark 2 takes everything that MB&F fans have loved in this automotive series over the last 10+ years and has made it more technical, more legible, sexier and easier to wear. (Price CHF 68,000 + Tax)