post pitch-raise creep?

[Cy Shuster]

My take is that the purpose of the pitch raise pass is to make major tension 
adjustments in the strings, so that's all I do in that pass: no pin-setting 
or other settling.  In particular, the major effect is how bringing up 
tension on one string affects the strings on both sides of it.  In my view, 
any pitch change from setting the pin is so minor relative to the 10 cents 
I'm pulling the string up as to be irrelevant, and certainly doesn't affect 
other strings (much).  The 3, 5, or 7 cent overpull that TuneLab calculates 
after measuring the pitch of the existing string is also significant, as 
it's based on empirical measurements of string interactions.

--Cy--
shusterpiano.com

----- Original Message ----- 
From: "Bob Hull" <hullfam5 at yahoo.com>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Monday, July 10, 2006 9:42 PM
Subject: Re: post pitch-raise creep?


> The ETD's pitch raise feature fosters a quest for
> accuracy and is this perhaps counterproductive.  If it
> sets-up pitch being sharp after pr and slows us down,
> should we strive for that accuracy?
>