Pitch Raising

[Farrell]

OH, Joe, please be more specific!

> As for the "Stretch" factors, that others are advocating, YIKES! They must
> like replacing strings. Some of those "over-shoots" are far in excess of
the
> normal sting breakage tolerances.

I never overshoot more than 25 cents (I usually keep it well below that).
What kind of "over-shoots" are you referring to? It's obvious to me 25 cents
max is typically within string breakage tolerances (on a string in good
condition). But I wonder about string deformation. How much can one pull it
up above pitch without doing something weird to it - deforming it in some
way. Anyone have any kind of data on that - I realize it will vary with
different string diameters, but maybe at least general info???

Terry Farrell

----- Original Message -----
From: "Joseph Garrett" <joegarrett@earthlink.net>
To: <pianotech@ptg.org>
Sent: Tuesday, November 06, 2001 1:26 PM
Subject: Pitch Raising


> Bill Bremmer & List,
> I've been following this "thread". Yes, Bill, if you use the pitch raising
> program, as I outlined in the PTJ, Dec.1999, it is very possible to get
> "Dead on", with just two passes on a 100cent pitch raise. If it doesn't
> happen, then I would be looking very carefully at the overall structure of
> the "victim piano". If the piano is solid, there should be no problem of
> attaining pitch in two passes.
> As for the "Stretch" factors, that others are advocating, YIKES! They must
> like replacing strings. Some of those "over-shoots" are far in excess of
the
> normal sting breakage tolerances. My advice is: DON'T DO THAT!
> Regards,
> Joe Garrett, RPT, (Oregon)
>