Baldwin SD

[Tom Servinsky]

David,
Enlighten me about the Revenko-Jones-Protocol-prepared agraffes.  I'm not 
familiar with them.
Tom Servinsky
----- Original Message ----- 
From: <david at davidandersenpianos.com>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Saturday, April 01, 2006 5:29 PM
Subject: Re: Baldwin SD


>> List (& especially any of you major rebuilders out there),
>>
>> Do any of you have any direct experience with an SD-6 #118127 (1952 I
>> was told)?
>
>> My question is, there is a tone problem in the middle agraffe
>> section. (It's so hard to describe
>> sounds in an e-mail.) The dealer kept saying he thought it was
>> primarily a hammer fitting/string
>> leveling problem. Yes, there is some of that that needs to be done.
>> But I believe it's a problem
>> in the agraffes themselves. This isn't a hammer fitting type of
>> sound. It's a distorted/zinging
>> kind of sound. Like a termination problem or something not seated
>> well.
>
>> Am I on the right track about the agraffes? Thanks.
>
>> Avery Todd
>
> Yup, I think you are; I've had the same thing happen on a couple different
> pianos with original agraffes---kind of a metallic "emphasis" on a certain
> overtone in the note played and exacerbated by volume.
>
> Here's what fixed it, TEMPORARILY, for me:  let the string down one
> quarter turn; the kink or bend in the string as it enters the agraffe
> needs to be "massaged" to a point where it's "straighter."
> Do that, return the string to tension, listen and repeat until the sound
> diminishes.  The real fix?  Obvious.  Restring the entire piano with new,
> Revenko-Jones-Protocol-prepared agraffes.
> This would seem to be a great leverage point in the purchase price.  The
> strings are 50 years old; they're done, especially for a school
> application.  Sounds like a no-brainer to me.
> Have fun.
>
> David Andersen
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