Let the Chronograph running damaged the watch?

[Mystro]

Vertical clutch and Column wheel =‘s no harm for continued running.

I did a test on my POC and my amplitude was barely effected.
Two dial chronographs like the Planet Ocean Chronograph can easily be used as a separate GMT and still have the versatility of the dive bezel acting as a third timing device.

[watchmaker]

Originally Posted by Mystro

Vertical clutch and Column wheel =‘s no harm for continued running...

As I previously stated, this is not correct.

[Mystro]

Originally Posted by watchmaker

As I previously stated, this is not correct.

Additional wear is equal to the average wear the movement naturally occurs so in practical terms, no damage. The only way to avoid any wear is to stop the entire movement so a bit of perspective has to be considered. The chronograph movement has the same ability to resist wear as the actual movement if running constant so why even worry about additional wear?? By the time the entire watch needs routine service, additional chronograph wear is a non issue. Tim Mosso explains this many times on his channel

[watchmaker]

Originally Posted by Mystro

Additional wear is equal to the average wear the movement naturally occurs so in practical terms, no damage. The only way to avoid any wear is to stop the entire movement so a bit of perspective has to be considered. The chronograph movement has the same ability to resist wear as the actual movement if running constant so why even worry about additional wear?? By the time the entire watch needs routine service, additional chronograph wear is a non issue. Tim Mosso explains this many times on his channel

I agree that the additional wear from running the chronograph 24/7 is typically a non-issue for a watch that is serviced as recommended.

My issue was with making reference to the vertical clutch (and the column wheel - that has zero influence on the amount of wear) and drawing conclusions based on the presence of one; as it is not the only component of a chronograph which is subject to wear through use.

The notion of vertical clutch = no wear is erroneous

[SearChart]

Originally Posted by Mystro

Additional wear is equal to the average wear the movement naturally occurs so in practical terms, no damage. The only way to avoid any wear is to stop the entire movement so a bit of perspective has to be considered. The chronograph movement has the same ability to resist wear as the actual movement if running constant so why even worry about additional wear?? By the time the entire watch needs routine service, additional chronograph wear is a non issue. Tim Mosso explains this many times on his channel

It isn't.

Most gears in the chronograph mechanism run either without lubricant or with very little lubrication at a few places (because having lube will mess with the perfect jumping of markers and mess things up).

Even though the vertical clutch itself won't wear extra when the chronograph is in use, some parts definitely do.

You're talking continuous use of the chronograph? You'll see significantly more wear on those pivots.

Does it matter? depends, you might get a years or two less in between service intervals on average, but the cost per service won't really be affected because the parts that wear are included anyway should they be replaced.

And... Tim Mosso isn't a watchmaker. Just a youtuber whos knowledge is questionable.

[ratty]

Just to take this a bit further, does the type of clutch make any difference?
Surely when the chrono is started, the clutch fully engages with no slip. Its like driving a manual car. Once the car is in gear and the clutch fully engaged, there should be no wear on the clutch mechanism.

I've heard that the 'Rolex' movement in the 1165.. models is better than the Rolex modified 'Zenith' movement in the 165.. models when it comes to letting the chrono run constantly, partly because of the different clutches, but I don't understand why this may be.

I'm hoping that either Scott or Bas can help me with this.

Thanks very much.

[Mystro]

So getting back to the OP's question. The wear is nominal in the grand scheme of the watch. My watchmaker as well as others follow this way of thinking with use and owners enjoyment of the watch.

[campfire]

Interesting application of the chrono. Never thought about that.

[GradyPhilpott]

I like to not keep my chronos running, because it's fun when someone notices the large seconds hand isn't moving, they tell me that my watch is broken or it's run down.

[mmmmp]

Nice to read about an unconventional use of a Chrono which provides a GMT function without any *significant* stress on the watch.
Of course, we're talking about a Rolex Daytona here, other chronos might not fare as well.
After 12 years of your specialized usage, I wouldn't give it a second thought.

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