String vibrations (was Re: Stuart)

[Overs Pianos]

>----- Original Message -----
>From: "CalinTantareanu" <calin.tantareanu@mae.ro>
>To: "Pianotech" <pianotech@ptg.org>
>Sent: September 22, 2003 12:38 AM
>Subject: Re: String vibrations (was Re: Stuart)
>
>
>>  Del,
>>
>>  Do you have a picture of the device (bridge agraffe) developed at
>Baldwin?
>>
>  > Calin
>
>. . . Stuart uses some type of muting material just aft of the leading string
>bearing, we did not. . . .
>Del

because his particular design, with virtually no clearance between 
the strings and the metal which protrudes up between the unison to 
hold the overhead pin, will cause string noise unless something is 
used to quieten it.

A couple of years ago I remember telling Wayne that a heat treated 
steel pin would be more than adequate for the string length 
termination. I notice that the latest versions seem to be fitted with 
such a pin.

His latest bridge agraffe has three bearing points, with the overhead 
pin being in the middle.This is a much improved design over the 
earlier version, which I suspect eventually might cause the odd 
bridge to be pulled forward off the panel. Mind you, with around 
fifteen degrees of string offset down and up, with his latest 
version, there remains considerable forward pull on the bridges. Of 
the later 'Aussie S & S' pianos I've inspected to date, his bass 
bridges still look to be 'doing it pretty hard'.

Ron O.
-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
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