why does a string go out of tune?

[Jim Busby]

David,

I tune mf-f generally and my joints haven't worn out.(yet) However,
Vince says I have "Popeye" arms :-) Just because my forearms are bigger
than most peoples legs...

IMO you need to listen softer than you tune, but not necessarily pp, as
someone suggested. Sometimes too soft will not expose voicing/unison
problems as will mp-mf. 

Jim Busby


-----Original Message-----
From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
David Ilvedson
Sent: Saturday, April 10, 2004 9:05 PM
To: caut@ptg.org
Subject: Re: why does a string go out of tune?

I agree with Don that mf is plenty of power for tuning stability.   You
might consider going through your tunings twice.  I believe you tune
pretty fast...?   
Are you tuning unisons as you go?   As an experiment, consider slowing
way down and carefully making "tiny" changes to the tuning pin.   This
sounds like tuning technique.    Find someone at the National who
doesn't pound and take a one on one class.   Wim, your finger joints
WILL wear out before their time.   It ain't worth it...

David I.


----- Original message ---------------------------------------->
From: Don <pianotuna@accesscomm.ca>
To: College and University Technicians <caut@ptg.org>
Received: Sat, 10 Apr 2004 15:12:59 -0600
Subject: Re: why does a string go out of tune?

>Hi Wim,

>They go out of "unison" for more than one reason. Look at the bridge
and
>the placement of the pins, they don't have equal amounts of wood
towards
>the sounding length. Also look at the pin block. The pins do wobble
back
>and forth with humidity changes and those with the shortest length will
>change the tension more. One interesting side effect of using *lots* of
CA
>on blocks is better unison stability. The pins seem much less affected
by
>changes in humidity in the short term. I do always recommend a dc
system
>when I CA. If not then the piano will (in my climate) become untuneable
again.

>I try to set pins and strings with no more than a mf sound level. I
learned
>the hard way that pounding can be detrimental to good long term
stability.


>At 03:35 PM 4/10/04 EDT, you wrote:
>>   In a message dated 4/10/2004 2:00:24 PM Central Standard Time,
>>
>>  humidity causes pitch instability, why just one one string? Why not
in
>>all of them? Why do some strings go up, and other go down?   Wim  

>Regards,
>Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
>Tuner for the Center of the Arts

>mailto:pianotuna@accesscomm.ca
>http://us.geocities.com/drpt1948/

>3004 Grant Rd.
>REGINA, SK
>S4S 5G7
>306-352-3620 or 1-888-29t-uner
>_______________________________________________
>caut list info: https://www.moypiano.com/resources/#archives

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