CA on bridge pins? or is it?

[Michael Gamble]

This is a multi-part message in MIME format.

---------------------- multipart/alternative attachment
Hello List
The string terminates in two places. I believe either to be a potential
source of false beats. It is just as liable to be caused under the capo
d'astro when the string creates a groove in the 'V' bar.
Regards
Michael G.(UK)
p.s. where do I get a flame suit at 11:00pm on a Saturday night? :-)

-----Original Message-----
From: Ron Nossaman [mailto:rnossaman@cox.net] 
Sent: 24 September 2005 13:30
To: Pianotech
Subject: Re: CA on bridge pins


> THEORY 1 of false beats involves the pin and notch
> terminating the string at different effective speaking
> lengths parallel or perpendicular to the bridge. 
> Generally, string cuts at the notch increase the
> speaking length and lower the pitch when vibrating
> perpendicular to the bridge.  String seating and
> careful notching assume this is the dominant theory.
> Could CA help this? Maybe?(see below)
> 
> THEORY 2 suggests the pin is loose and vibrating,
> creating the false beat. 

It's both. The pin is the string termination, and the string doesn't 
slither up and down the pin during play. The pin gets loose in the 
cap at the surface and flexes (2-B). The flagpoling pin and the 
crushed notch edge make for two effective speaking lengths. Seating 
wedges the pin so it doesn't flagpole and (sometimes) temporarily 
stops the beat. CA stops the flagpoling by providing support to the 
pin at the surface, which kills the false beat.

  This has all been gone over repeatedly and exhaustively, and the 
archives are full of it. This year alone has enough reading to keep 
you busy for a while.

Ron N

---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/2b/be/46/fd/attachment.htm

---------------------- multipart/alternative attachment--