[pianotech] Managing agraffes was Increasing bridge height

[Jude Reveley/Absolute Piano]

Frank,

Did you interpret the use of threadlock to be in the agraffe hole or at the 
threads. I can imagine threadlock around the agraffe threads robbing only as 
much energy as a tuning pin bushing. How is this related to a rigid 
terminus?

Jude Reveley, RPT
Absolute Piano Restoration, LLC
Lowell, Massachusetts
(978) 323-4545

----- Original Message ----- 
From: <pianoguru at cox.net>
To: <pianotech at ptg.org>
Cc: "Jude Reveley/Absolute Piano" <juderev at verizon.net>
Sent: Wednesday, March 25, 2009 10:09 PM
Subject: Re: [pianotech] Managing agraffes was Increasing bridge height


> ---- Jude Reveley/Absolute Piano <juderev at verizon.net> wrote:
>>.....
>>serve as a prophylactic against any potential rattling.
>
> Or maybe a shock absorber to rob some of the energy from the string.  A 
> rigid terminus would certainly be better.
>
> Aside from the thread lock, I have seem loose agraffes, especially in the 
> bass bichords, rotating out of alignment that would define equal speaking 
> lengths.  Quite often the strings change direction toward their respective 
> tuning pins enough that the string tension will rotate the agraffe to find 
> its best balance between the sideways string pressures.
>
> Frank Emerson
>
>
>