Quote:
Originally Posted by sheldonsmith
Sheldon
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Thanks for coming back here. I agree with what Scott (aka Watchmaker) wrote "
High amplitude is not analogous to good performance of a watch" I add that its starting value and time dependance is a very good indicator of movement health, see several graphs in this thread.
Interesting "
that lower amplitude contributes to longer power reserve". I can't confirm but would like to see measurement data for this.
Your SD43 came back from RSC Dallas in Dec 2019. Lift angle 55 degrees gave:
DU: 284, +3
CL: 253, 0
CD: 267, +3
CR: 253, +1
DD: 293, +4
Your data yield to X = +2.2 and D = 3, which is very good.
I don't understand why you measured in position CR = 12U and not CU = 3U. Is that right?
For a watch serviced by a RSC in 12/2020 it would be interesting if you could measure for DU the amplitude decrease with time, i.e. from full caliber winding (t = 0) to the end of the power reserve (t = 70-72 h) using 53 degrees lift angle.