Inharmonicity

[Richard Moody]

Hi Jim 

>>There are two
 7' pianos in which the second partial of C5 is flatter than the
fundamental.<<

	The second partial of C5 is FLATTER that the fundamental?  You mean it is
flatter from 2x the fundmental.??
What pray tell could cause that?  It seems that in piano wire with
stiffness being a factor of ih, all partials MUST be sharp.  
How much flatter? 

Richard Moody 

----------
> From: Jim Coleman, Sr. <pianotoo@imap2.asu.edu>
> To: Richard Moody <remoody@easnet.net>
> Cc: pianotech@ptg.org
> Subject: Re: Inharmonicity
> Date: Thursday, August 20, 1998 12:52 AM
> 
> Hi Richard:
> 
> The variations of inharmonicity especially in the lower numbered
partials
> is something which can be seen even in plain wire strings. There are two
> 7' pianos in which the second partial of C5 is flatter than the
fundamental.
> This is most unusual.
> 
> More variation is observed in wound strings in general. The most weird
thing
> is found when the copper wrap is over wrapped for about one inch at the
> bridge end of the strings. This often causes more than just the second 
> partial to be flatter than the fundamental and makes tuning by any means
> utterly impossible. This phenomenon was witnessed on one of the most
> prestigious 6' piano in the world.
> 
> Jim Coleman, Sr.