P22 scale

[James Grebe]

Yamaha has at least used 2 different scales for the wound string section and 
who knows how many changes in the treble section.
James
James Grebe   Piano Tuning & Repair   Member of M.P.T.
R.P.T. of the P.T.G. for over 30 years.   "Member of the Year" in 1989
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----- Original Message ----- 
From: "Ron Nossaman" <rnossaman@cox.net>
To: "Pianotech" <Pianotech@ptg.org>; <caut@ptg.org>
Sent: Friday, January 20, 2006 10:30 PM
Subject: P22 scale


>
> Having spent the last two days tuning mostly Yamaha P22s at around 25%RH, 
> from 70%+ RH just a few months ago, I have a request. Has anyone out there 
> ever taken complete scale data on a P22 that they would be willing to send 
> me? I'm curious how tension and break% profiles correspond to the pitch 
> change patterns I see in these pianos, and I haven't yet had occasion or 
> opportunity to take the measurements.
>
> Looking for data to compare to observed reaction, for educational 
> purposes.
>
> Ron N
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