string height

[Frank Weston]

Although I don't keep records to the level of detail of recording string
height, I have observed string height changing within sections and from
section to section on almost every grand I have restrung.  Typically,
height from end to end of a section can vary as much as a millimeter or
two, and from section to section another millimeter or two.  In the area
where agraffes are used, height variations seem less.  Some very fine
pianos evidence these variations, some do not.  Unless the variations are
extreme, I don't think it is anything to get too concerned over.

Frank Weston 

----------
> From: A440A@aol.com
> To: pianotech@ptg.org
> Subject: Re:  string height
> Date: Sunday, February 01, 1998 7:24 PM
> 
>  
> >Much to my surprise I found the string heights to taper from 21.4cm to
> >20.8cm at note 88.  This makes for an interesting regulation and
> >voicing.  Going on and measuring the string heights in the plain wire
> >agraffe section came out at 21.1cm tapering to 21.4cm!
> 
>     It is usual to see this much variation in string height from the
keybed in
> most of the non Asian pianos I have seen.  Anybody else?
> Ed