Could Tag Heuer’s latest experiment set a new benchmark for watchmaking’s trickiest component?


IN THE BALANCE
Tag Heuer debuts its carbon composite hairspring (visible beneath this watch’s neon green tourbillon bridge).
A hairspring needs to be many things: thin, light, stainless, resistant to magnetic fields and fluctuations in pressure and temperature, and be able to oscillate at the same speed despite all that movement on the wrist. Yes, the literal heart of every mechanical watch is a nightmare to make, which is why any advance in hairspring technology is a big deal. Which brings us to Tag Heuer’s recent contribution to the field. The brand’s laboratory in La Chaux-de-Fonds has produced a hairspring made of carbon composite, a world first in watchmaking, and it comes with a whole host of benefits. The lightweight, low-density hairspring is virtually unaffected by gravity and shock, completely anti-magnetic, and offers perfect concentric oscillations that lead to improved precision.
By pairing the hairspring with an aluminium alloy balance wheel, it also achieves optimal thermal behaviour and aeroelasticity. Further inaccuracies have also been eliminated by producing the hairspring with the collet (a small part that attaches the hairspring to the balance wheel axis) already attached. And, while silicon has many of these properties, carbon composite is far less brittle.

02 FLIGHT PLANS
In a bid to honour the golden age of commercial aviation, Breitling has released a capsule collection centred around its much loved pilot’s watch, the Navitimer 1. There are three references with retro styling, each one dedicated to a legendary airline of the past – Pan Am, Swissair and TWA.

03 BACK TO BLACK

04 SHAPE SHIFTER