Seiko - In that case, its highly likely...

In that case, its highly likely...

I believe continuous counters in general, work by having a clutch engaging the chrono minute/hour hands directly to the regular time minute/hour hands. Since they are mechanically linked, adjusting the time manually via crown while chrono is engaged will result in the chrono hands also moving.

A typical jumping or semi-instantaneous minute counter like the lemania chronos or a Datograph/5170 do not exhibit this quirk. This is because they function differently; the chronograph seconds hand have a finger/ratchet that flips the minute counter one place every 60 seconds. The counter is not connected to the regular time minute or hour hands.

I consider this as a "quirk" since its not a mechanical advantage or disadvantage; just an interesting side effect of such a chrono setup!

The Vacheron cal 3300 Harmony Chronograph also has the dragging minute counter. I highly suspect this watch also will have the same quirk as the Seiko Presage; anyone willing to try that out?

Regards,
skyeriding

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An Operational Oddity of the Seiko Presage Chronograph

By: cazalea : November 3rd, 2016-12:38

I was messing around with my watch earlier today, winding and resetting it, and I discovered an odd thing. The time setting adjustment and the minutes (and hours) counters of the chrono function are linked. I checked with some other watches I own and foun...

Very curious :)

By: KMII : November 3rd, 2016-14:01

I\'d probably never find out had you not pointed it out - too much respect and too little understanding of what goes on inside to try something like that out

The hours counter moves as well! [nt]

By: Ornatus-Mundi : November 3rd, 2016-14:20

You're right!

By: cazalea : November 3rd, 2016-14:23

I hadn\'t noticed that, but just checked it "on the wrist" and noted it in my earlier post. ...

There must be some logical reason....

By: KIH : November 3rd, 2016-17:45

... maybe NOT! I tried on mine, and it does the same thing! Interesting! Ken

Wild guess:

By: skyeriding : November 3rd, 2016-18:32

Is this watch minute counter semi instantaneous or continuous? If the latter, its possible that while chronograph is in operation, its directly coupled to the motion works of the time hands. That would lead to this interesting quirk seen here... Regards, ...

Continuous

By: cazalea : November 3rd, 2016-20:08

Not like a 7750 that jumps after 60 seconds - this Presage minute hand moves smoothly. I checked with the 6S37 which also jumps on the minute counter. It does NOT exhibit the behavior of the Presage. It must be a feature of the new triple-clutch movement....

In that case, its highly likely...

By: skyeriding : November 3rd, 2016-21:04

I can almost swear the same thing happens on the Breguet Type XXI

By: Brandon Skinner : November 4th, 2016-13:40

I figured there had to be some reason for it, but could never figure out why. Anyone with a XXI who can verify. Shorty's Home?