[CAUT] pitch rise

[Roger Jolly]

Hi Richard,
                     Lifting and leveling the strings definitely helps on 
new pianos, in a big way. A gentle massage just in front of the bridge pin, 
with a hammer shank, at the agle of the bridge pin, also helps. Gentle does 
not mean forcing down wards.
Hope this helps.
Regards Roger

At 09:44 AM 3/9/2006, you wrote:
>With the discussion of unison drift, I have a question which may be
>related.  What is the cause for pitch rise while tuning?  I can
>understand why the pitch might fall, especially if there's a significant
>pitch change.  But I'm not talking about a radical pitch alteration.
>
>Here's the scenario.  I'm working on a newer or rebuilt piano with tight
>pins and still relatively stretchy strings.  I'm trying to stabilize the
>instrument, but it's being stubborn.  I'm having to be more aggressive
>with my tuning technique, i.e., in order to settle the pitch I have to
>first pull the string higher than I like in order to move the tight pin
>and then allow the stretchy string to settle back to the pitch I want.
>As I move up the piano, the pitch  behind me tends to creep higher,
>sometimes to the point I have to retune the note below.  I'm not a
>pounder, so I don't think that I'm beating the piano too hard.  I'm not
>trying to pitch raise/lower the piano, just give it a good solid tuning.
>
>What can I do to prevent this "phenomenon?"  Does anyone else experience
>this?  What is the cause?
>
>Richard West
>
>
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