Overpull

[Bradley M. Snook]

Sorry, I forgot to change the subject . . .



I would like to ask some questions about overpull:

I really hesitate asking what makes the pitch drop, because my interest is
not about whether the plate or bridge is flexing. Assuming that these are
not new strings, can we actually predict how much the pitch will drop during
a pitch raise? How much do surrounding strings effect a note that is being
moved. I assume that a half step away is more influential than a note a
fourth away.

Lets say we are not really doing a pitch raise, but the stretch that was
applied to the piano necessitates moving some of the notes as much as 20
cents. If we know exactly where all the notes are, and we know exactly where
we want the notes to end up, is there a way to accurately calculate how much
overpull is needed for each note? Understandably there will be factors
involved that are hard to predict, but is there a way to get really close?

Bradley M. Snook