From the September edition of the Horological Journal.
The Omega Spirate is a new balance spring system that can be adjusted for stiffness to allow fine adjustments of the rate to within 0.1 seconds per day. This is one of the few truly new ideas in horology made possible by silicon manufacturing techniques.
The system was announced in January this year. However, technical details were sparse, with Omega supplying only basic images of the spring and views of the new associated watch, the Speedmaster Super Racing. Discussions between Jim Arnfield, David Boettcher, Martin Foster, Anthony Randall, Tim Treffry and Justin Koullapis resulted in a full technical analysis. This was later supported by technical information supplied by Omega. HJ is able to offer the only full explanation anywhere of how this fascinating system works.
Have you ever seen a balance spring whose stiffness is adjustable on demand? The Spirate does that.
In this HJ, we show how the Spirate Loading Beam, Snail Cam and Rate Mobile Stud Holder work together to regulate the watch to within 0.2 seconds per day.
All is explained in the full article available below…
Justin Koullapis FBHI
Read the article in full here: