In the second installment, we will talk about the “caliber HMC902” that cannot be overlooked when talking about the Streamliner Flyback Chronograph Automatic .

Caliber HMC902

Although H. Moser & Cie. makes most of its movements in-house, this caliber HMC902 was developed with Agenhor. See video below.

Developed by Agenor, chronograph movement that changes history Video link
https://www.afpbb.com/articles/-/3159958




AFPBB News

Caliber HMC902 has 434 parts, which is close to Lange's double split (465). At first glance, it looks like a manual winding, but the automatic winding rotor is on the dial side (confirmed at about 1 minute and 36 seconds in the video), so it is highly convenient and you can enjoy the mechanism. Normally, automatic winding is 100% impossible to see parts because the rotor is a shielding part.

jumping seconds

Mechanism to eliminate the same measurement error as the Lange Datograph. When the chronograph is running, the minute accumulator hand moves instantly when the second accumulator hand reaches exactly 60 seconds. It may come as a surprise, but not all mechanical chronographs are like this, and most of the time the minute counter hand moves around 60 seconds, not exactly 60 seconds. In fact, even if there is no practical problem, I can feel the passion of the brand to "make the best chronograph movement".



After the arrival version is up, we have received many opinions on the luxury price (laughs). There is no if in history, but if the Datograph stainless steel model comes out, I think it will be more expensive than the Streamliner, so it would be very helpful if you could understand. . .

Caliber HMC 902 self-winding movement
Diameter: 34.4 mm or 15 1/4 lignes
Thickness: 7.3mm
Frequency: 21,600 vibrations/hour
Bi-directional self-winding
Tungsten rotor placed between movement and dial
dual barrel
column wheel chronograph
Two-layer chronograph mechanism
Horizontal clutch with friction wheel; smooth wheel with micro-toothing to prevent gear engagement and consequent accidental jumps during chronograph operation
Tulip-shaped yoke to enable chronograph activation and deactivation
434 parts, 55 stones
Power reserve: 54 hours

New Streamliner 6902- 1200 Arrival
https://www.eye-eye-isuzu.co.jp/archives/37866
New Streamliner 6902- 1200 Dial/Needle Knitting
https://www.eye-eye-isuzu.co.jp/archives/38305
Click here for the H. Moser & Cie. Web Catalog
Nitta in charge of H. Moser & Cie.