freebies

[Scott Jackson]

Hi Mike,
Method number 1 (see below) must be faster and better. Pitch raising is
rough 'tension adjustment' only, and I can't see how method 2 is going to be
successful.

If strings are pulled above pitch and the stabilising is successful, then by
definition those strings are going to end up sharp thus needing to be
knocked down; if not successful, then they will drop some random amount then
need to be tuned and set again. This means twice as much pin settling (and
time). If a piano needs a pitch raise, do the rough work first (and fast),
then worry about tuning and setting afterwards, when there is hope that it
will be effective. You can't hope to 'stabilise' a string when the tension
on the frame etc is still changing: that's the point of a pitch raise, to
get the tension close as quick as you can.

So, as far as i can see, method 1 is a pitch raise (tension adjustment).
Method 2 is just two tunings, thus taking twice as long.

Happy pitch raising,
Scott Jackson

-----Original Message-----
From: Mike and Jane Spalding <mjbkspal@execpc.com>
To: Pianotech <pianotech@ptg.org>
Date: Tuesday, 28 January 2003 1:08
Subject: Re: freebies


>Ron,
>
>So the implications are (at least) two very different procedures for the
pitch-raise and fine tune passes:
>
>1:  Pitch raise by pulling up to pitch and moving on.  Fine tune by
manipulating every string to ensure that it is on pitch and stable.
>
>2.  Pitch raise by pulling above pitch and firmly stabilizing.  Fine tune
by manipulating only those strings which are not on pitch.
>
>What to do?  Which procedure is faster/better?
>
>Mike Spalding