What is the ACTUAL power reserve of your Speedy Pro?

[MTROIS]

I am sorry if this was already covered but my search did not come up with anything on this topic.

I know that the 1861/63 movement is "rated" at 48hrs power reserve but mine seems to have far less.

I am just wondering how yours REALLY get with a full wind?

[Mastergreenhand]

Mines not 48. more like 30 something but I haven't tested it

[landroverking]

I would wind mine every morning, so hard to say.

[tfduff723]

Never properly tested but around 36 hours seems fairly typical.

[And]

If I forget to wind mine one night it's still going the next night. That's 48 hours.

[flyinghell34]

I have two 861 Speedmasters and fully wound they run from 49-52 hours consistently.

[soho]

I have never tested mine, but feel like I get close to the 48 hours. It matters whether you run the sub-dials or not, right?

[MTROIS]

Originally Posted by soho

I have never tested mine, but feel like I get close to the 48 hours. It matters whether you run the sub-dials or not, right?

Yes, I would imagine that running the chronograph will of course eat more energy.

I am testing mine one more time, but I seem to be getting around 40 hours or so... Which would be quite disappointing if confirmed.

[And]

Originally Posted by soho

I have never tested mine, but feel like I get close to the 48 hours. It matters whether you run the sub-dials or not, right?

Although it seems counter intuitive, I understand that running the subdials doesn't affect the power reserve as the spring doesn't unwind quicker.

[jay_man2]

I wind mine every night about 7 pm. A few days ago I decided to skip a day. It was still running another 24 hours later, so it must be close to 48 hours overall.

[soho]

Originally Posted by And

Although it seems counter intuitive, I understand that running the subdials doesn't affect the power reserve as the spring doesn't unwind quicker.

Thanks And! Very interesting and I am going to test that.

[Darlinboy]

My 145.012 Speedy will run for 36 hours, plus or minus, without the chrono engaged.

[Carrotstik]

Twice I've let mine run until it stops, both times it went for just over 51 hours

[MTROIS]

Quick update from my side: the watch ran at least 48 hours and was still going.
Since I did not feel like setting it again today, I rewound it to its max, but will try again to run it to the end to see if this result is consistent.


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[Aramis9]

Running the subdials can make a difference, mechanical watches that run a calendar can stop earlier than usual IF the spring is wound down and has nearly completed its unwind, the effort needed to change the date wheel can sometimes stop the watch in these circumstances. Triple date moonphase complications make the scenario more likely. So it follows that if you have a minute recorder on your watch, and the spring is on its very last power, the effort to click the minute gear past its click could stop the watch a few minutes earlier.

[And]

Originally Posted by Aramis9

Running the subdials can make a difference, mechanical watches that run a calendar can stop earlier than usual IF the spring is wound down and has nearly completed its unwind, the effort needed to change the date wheel can sometimes stop the watch in these circumstances. Triple date moonphase complications make the scenario more likely. So it follows that if you have a minute recorder on your watch, and the spring is on its very last power, the effort to click the minute gear past its click could stop the watch a few minutes earlier.

That's consistent with my understanding as well. It doesn't drain the power reserve quicker but close to the end of the reserve, the remaining 'push' may not be sufficient to run the chrono as well. For the speedy I would expect the difference to be slight.

[bradj]

I typically wind mine every morning when I put it on, but when it was brand new I got right at 45 hours

[GTS Dean]

Mine runs close to 48 hours - maybe a little over.

[tfduff723]

Originally Posted by tfduff723

Never properly tested but around 36 hours seems fairly typical.

So I did an unofficial test - just wound it & wore it. Very little chronograph use & got close to 46 hours.

[Passinthru]

Originally Posted by MTROIS

I am sorry if this was already covered but my search did not come up with anything on this topic.

I know that the 1861/63 movement is "rated" at 48hrs power reserve but mine seems to have far less.

I am just wondering how yours REALLY get with a full wind?

How long has it been since your last service?
That could certainly affect your power reserve.