Quote:
Originally Posted by GST15
I have been reading about the inner workings of watches, and recently purchased a timegrapher. I have about a dozen higher end watches, including 4 modern and several vintage Rolex, Omega, Cartier and Breitling.
My Rolex GMT Master ll, purchased from my AD in 2020 is running between 0 and -2 Spd, 0 beat error and at the correct 28,800. The problem, (if it is one) is that the amplitude is running between 220 and 245. I have read that the amplitude should fall somewhere between 275 and 310, which is where my other (3) 32XX
movements fall.
Is this something that I should be overly concerned with of should I just monitor its behavior, since I have 3 years remaining on the factory warranty. I am inclined to do this, since it is pretty much running perfectly.
Thanks for the help.
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Something seems a bit odd with both sets of numbers you are quoting. Multiple Rolex trained watchmakers have noted that the 32xx produces lower amplitude as compared to previous generations of movements, even when everything is "perfect". The belief is that this goes hand-in-hand with the more efficient escapement and mainspring changes and helps achieve the longer power reserve. I have never seen anyone claim an amplitude of 300 or more on a 32xx. Are you really seeing that on your others?
My two 32xx do 270-275 and 255-260, respectively, dial up, full wind. The "good" one is still over 200 degrees in vertical positions 24 hours after full wind (the only amplitude spec which Rolex has actually put out), whereas the "bad" one falls to the 180s.
If the most you can ever get out of yours is 220-240, full wind, horizontal position, then that would
seem to be quite low.