post pitch-raise creep?

[Andrew and Rebeca Anderson]

That is why I like to voice the piano after the pitch correction 
pass.  At least rub the strings with a rag. Engaging the damper pedal 
and firmly playing the whole keyboard will loosen things too.

Andrew Anderson

At 05:03 PM 7/7/2006, you wrote:

>>What do fellow listers experience as the average amount of time a 
>>piano needs to settle from a pitch raise before it is ready for a 
>>fine tuning from 20 cents?  50 cents? 100 cents?
>>Alan Eder, RPT
>
>As Terry and Patrick said, instantly - with one small problem. If 
>the strings haven't adequately rendered through the bridges by the 
>time you've finished with the fine tuning, those that haven't will 
>to some degree in the next few days and weeks, and trash the tuning. 
>It probably won't go far off pitch, but the unisons get ragged 
>quickly. So any lingering instability from a pitch raise, or any 
>tuning for that matter, isn't a function of time, it's a function of 
>friction at bearing points as string segment tensions try to 
>equalize. If we had a way to detect segment tension differences 
>while we were tuning, we'd all leave much more solid tunings behind.
>
>Ron N