[pianotech] Bridge pin locations help (image oops)

PAULREVENKOJONES at aol.com PAULREVENKOJONES at aol.com
Thu Feb 3 20:05:54 MST 2011


This certainly appears to be a mis-pinned bridge. The bridge pin line is  
not square to the notch edge, nor is the string 90 degrees to the bridge pin  
line. I can't see the agraffes. This is in some styles (viz Steinway C) a  
designed element. If this is not a designed element, it is an accidental  
element, false beating issues aside, and my opinion is that it would bear a  
re-patterning of the bridge scale. 
 
Paul
 
 
In a message dated 2/3/2011 9:01:43 P.M. Central Standard Time,  
tune-repair at allegiance.tv writes:


On  Feb 3, 2011, at 8:51 PM, Ron Nossaman wrote:

> The unequal speaking  lengths aren't the cause of the false beats
> That's a "feature" to try  to make the dead killer octave area more lively

Sorry, Ron, of my error  in explanation.

I do remember when there was a time when some bridge  pins
were intentionally offset for what you say, but the  chiseled area of
the bridge also followed suit.

In this  situation the chiseled area does not, and is clearly off.

The side  bearing point of contact and the down bearing point
of contact  do not intersect together.

Keith

Keith


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