How to explain a pitch adjustment..and!

[pianolover 88]

Semantics. Let it settle first. It sure can't hurt.

Terry Peterson



----Original Message Follows----
From: "Geoff Sykes" <thetuner@ivories52.com>
Reply-To: Pianotech <pianotech@ptg.org>
To: "'Pianotech'" <pianotech@ptg.org>
Subject: RE: How to explain a pitch adjustment..and!
Date: Tue, 20 Dec 2005 21:18:44 -0800

Am I correct that it is not the "excessive" pin movement that directly
precipitates the instability but the need of the soundboard to adjust to the
change in tension, whether from tuning or changes in humidity, that makes
for instability?

-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf
Of pianolover 88
Sent: Tuesday, December 20, 2005 8:14 PM
To: pianotech@ptg.org
Subject: Re: How to explain a pitch adjustment..and!


<<Are you suggesting that tuning pin movement is the source of pitch
instability after pitch correction?>>

Nope. It's the change in TENSION precipitated by the excessive pin movements

(during the PR) that cause instability. When large amounts of tension are
added,(which can and often is THOUSANDS of pounds!) the piano must
distribute this tension; it does not do so immediately, as we know.
Similarly, after installing a DC I will always let the piano aclimate for at

least two weeks before tuning, as the pitch will almost always drop,
sometimes substantially). IF the client is going to play the piano only
occasioanlly, I will then schedule the next tuning in 6 months .

Terry Peterson



----Original Message Follows----
From: Don <pianotuna@yahoo.com>
Reply-To: Pianotech <pianotech@ptg.org>
To: Pianotech <pianotech@ptg.org>
Subject: Re: How to explain a pitch adjustment..and!
Date: Tue, 20 Dec 2005 21:53:44

Hi Terry,

Are you suggesting that tuning pin movement is the source of pitch
instability after pitch correction?

At 04:24 PM 12/20/2005 -0800, you wrote:
  >Depending on the amount of PR, ususally more than 12C, I always schedule 
a
 >"follow-up" tuning in 1-3 months, explaining that after restoring all that
 >loststring tension, the piano now must "settle" and adjust to that added
 >tension, and it some shifting of will occur. So the follow-up is crucial
in
  >building long term stabilty. And that tuning will leave the piano much
more
  >stable because tuning pin movement will be much smaller than during the
 >initial PR and tuning. Again, never a problem.  >  >Terry Peterson

Regards,
Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
Non calor sed umor est qui nobis incommodat

mailto:pianotuna@yahoo.com	http://us.geocities.com/drpt1948/

3004 Grant Rd. REGINA, SK, S4S 5G7
306-539-0716 or 1-888-29t-uner

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