hard pounding

[Richard Moody]

If I may add, this "bumping up and down of the pin"  is the best
indication of if the string is RENDERING. Thank you Jim Bryant for
bringing us back to this word.  I capitalize that because  that is what my
teacher said , in effect, the setting of the pin depends on how the string
renders.   He would say from time to time, "This string is not rendering" 
and give a test blow to prove it.  Then I would tune it, and he would give
a test blow to prove it again.  Through this I became aware of how to find
strings that were not "rendering".  It involves the "bumping up and down "
of the tuning pin Bill Ballard mentions. 
	In a nutshell, if the pin is bumped up and no change  happens, the string
is not rendering.  That means no matter what you do, for that particular
string, sooner or later a hard blow will dislodge it.  Hopefully it will
be later depending on what you do.  

Richard Itsalwayslater  
----------
> From: Bill Ballard <yardbird@sover.net>
> To: pianotech@ptg.org
> Subject: Re: hard pounding
> Date: Friday, April 10, 1998 6:55 AM
>Bumping up and
> down from what you hope is a settled tuning pin and string path is a far
> better indicator of how close to the relaxed center the pin torsion and
> tension differentials across friction barriers are. 

> "Richard Moody" <remoody@easnet.net> wrote:
> >they (test blows)should demonstrate instead that the piano indeed has
problems as you put
> >it in the proper relationship of tuning pin friction but most
importantly
> >string friction at the pressure points.
> 

 >If
> string friction is higher that pin friction, there's no way the
> "bump-up-bump-down" is going to work. I covered this in 2-3/91 PTJs.
> ("String Friction and its Coordination with Pin Friction in Tuning
> Mechanics".) 

> Bill Ballard, RPT
> New Hampshire Chapter, PTG
> 
> "We mustn't underestimate our power of teamwork."
>  Bob Davis
> 
>