One pass Large Pitch Raises Safe?

[Patrick C. Poulson]

Andrew: If that were the case, how could you ever bring a restrung piano up
to pitch without and endless series of minor adjustments? I don't believe
that a large pitch raise is of any danger to a well cast plate. The
procedure of tuing all the As, then all the Cs and so on is unnecessarily
time consuming and overly cautious. I have done many, many major pitch
raises without any problems, as, I am sure, have most of the members of thsi
list.
Patrick C. Poulson
Registered Piano Technician
Piano Technicians Guild
----- Original Message ----- 
From: "Andrew & Rebeca Anderson" <anrebe@zianet.com>
To: <davidlovepianos@earthlink.net>; "Pianotech" <pianotech@ptg.org>
Sent: Monday, May 31, 2004 7:45 PM
Subject: One pass Large Pitch Raises Safe?


> I've been following a discussion regarding a large pitch-raise of 100
cents
> or more being done in one pass.  Is this safe?  Do you run the risk of
> damaging a plate by, say, concentrating tension in one area as you begin
to
> pull the pitch up.  I'm not talking about strings which are risky in their
> own way.  I've understood that when there is such a large tension
> adjustment to be made that it is safer to spread it out as octaves, such
as
> all the A's then all of the E's then all of the C's, then fill in the rest
> after which you do a fine tune.  Am I being overly cautious?
>
> Andrew
>
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