Cartier Caliber 1847 Accuracy
Hello.
I am a WatchCrunch newbie and heard good things about this community. Hope you guys can help with my question.
I recently acquired a Cartier Pasha with MC 1847 and noticed some oddities in terms of its accuracy.
The watch was on a winder when not in use, which was most of the time. But in 2 occasions I noticed the watch was slow, measured in minutes over the course of a few weeks. So I started tracking its daily performance. I was surprised to find out the watch has been running -21 seconds per day. I even took the watch off the winder, manually wound it and put it dial-up (the watch dial was vertical while in the winder). That did not seem to improve the accuracy.
I know MC1847 is not COSC certified, and I can do more tests, but what should be my expectation? What is your experience with this movement's accuracy?
It sounds like the movement needs to be regulated. I do not have any experience with Cartier specifically, but I have mechanical watches, and 21 seconds a day would be within tolerance for a lower end movement like a Miyota 8215, but not for something higher end. I would not be happy with an ETA2824, Sellita SW200, or a Powermatic 80 movement with that much daily variance.
I don’t know the movement - but my vintage cartier santos carree (c. 1980) was about two minutes a day fast. After a little regulation it’s only 10 seconds a day out.
It sounds like the movement needs to be regulated. I do not have any experience with Cartier specifically, but I have mechanical watches, and 21 seconds a day would be within tolerance for a lower end movement like a Miyota 8215, but not for something higher end. I would not be happy with an ETA2824, Sellita SW200, or a Powermatic 80 movement with that much daily variance.
Thx. That's what I thought as well.
I agree all movements have stated tolerance but none of my watches, regardless of their price bracket, perform anywhere close to either extremes of their stated tolerance. So this is definitely an outlier.
I do plan to take it to a Cartier Boutique to get it looked at but I just don't want to make a trip (especially not during the Xmas-craze) and then being told that -21 is still within that tolerance.
I have a Santos De Cartier with the MC1847 movement and it runs around +2SPD.
I popped a text to my Cartier Boutique guy. He said that the 1847 MC has an in spec rating of -3/+7 per day.
Did you purchase it new? If so, then regulation it should be covered under warranty.
Winders dont always keep enough wind to keep the watch performing optimally. I would use something like the Watchtracker app to keep track of it and wear it a week or so straight. If you can access a timegrapher that would really tell you whats going on.
I popped a text to my Cartier Boutique guy. He said that the 1847 MC has an in spec rating of -3/+7 per day.
Did you purchase it new? If so, then regulation it should be covered under warranty.
Thx for reaching out to your guy!
Yes, I did purchase it new just a few months ago.
Looks like a trip to the Boutique will not be a wasted effort. Appreciate your looking into it!
Winders dont always keep enough wind to keep the watch performing optimally. I would use something like the Watchtracker app to keep track of it and wear it a week or so straight. If you can access a timegrapher that would really tell you whats going on.
Agree. I was lucky that I can adjust the winder's rotation, so I bumped it from 680 to 990 to 1350 RPD to no avail. When that failed to improve the situation I started manually winding the watch and tracking its performance using Watchtracker as you also suggested.
Thanks to @Edge168n, it seems -21SPD is definitely out-of-spec.
my newly bought santos was running -2spd then month later -10spd so went to my AD to get it regulated. He told me it should not be so much in - spd and better around +10spd.
Regulated in a day but AD kept the watch for 3 days for observation.
UPDATE: mine is running +6spd currently
Thx. That's what I thought as well.
I agree all movements have stated tolerance but none of my watches, regardless of their price bracket, perform anywhere close to either extremes of their stated tolerance. So this is definitely an outlier.
I do plan to take it to a Cartier Boutique to get it looked at but I just don't want to make a trip (especially not during the Xmas-craze) and then being told that -21 is still within that tolerance.
I would be very surprised if over 20 seconds was within their tolerances. I have vintage watches operating with less variance than that.
Hi! I own the Cle, which was the watch the movement debuted in. Mine's about +3s a day.
I have the ADLC Santos de Cartier which also has the calibre 1847 MC. I'm not one to fret too much about my mechanical watches being "highly" accurate but just based on my experience that when worn (that may be the key) the1847 has been pretty accurate. Once I even remarked to myself (as watch nerds will tend to do) how remarkable it was that it was as on-time as it was when I looked at it for not being COSC-certified. I suspect that perhaps the movement may not be getting enough rotations on your winder. I've found that to be the case with mine. Try increasing the rotation rate if yours allows for adjustment.
If all else fails, take it back to the AD and ask that they check it out. Cartier has an excellent limited warranty.
To be honest, my 1847 MC Tank keeps amazing time.