More classic false beat tricks

[Joe And Penny Goss]

Hi Ric,
Thinking. about transverse and liniar sound waves and the energy that is
present to excite the back scale segments of the string and other back
string segments of notes not being played. Causing them to sound in with the
struck string.
Like ghosting.
Just an observation, I have never heard a false beat in the sections that
have braiding of the back scale that could not be lessened by seating the
string. My thought here, is loose bridge pins, are the cause.
But if one braids off the section one also kills projection and sustain of
the piano.
Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: "Richard Brekne" <ricb at pianostemmer.no>
To: <pianotech at ptg.org>
Sent: Sunday, April 13, 2008 1:38 PM
Subject: More classic false beat tricks


> Hey there Joe
>
> Works for both slow and fast beating false beats... tho funny thing is
> when dealing with a rapid twitter as you call it, its not so much as the
> beat disappears entirely as it is it quites it down very much. Doesnt
> seem to effect the speed of the beat.  With slow false beats they seem
> to just go away.  I'm not really sure whats exactly happening here, but
> clearly one is adding to the strings speaking length when applying CA,
> some oil or protek as described below.   Where as a screwdriver coupled
> to the bridge pin will slow down the false beat with increased pressure
> until it stops.... and then if you increase pressure further start to
> appear again and gain speed with more and more pressure.... adding to
> the string as mentioned below does not seem to affect the speed of the
> false beat, but rather somehow either damps it or alleviates some
> condition in the string that contributes to the false beat. The pitch
> drop may be related...or just another affect.
>
> How any of this would affect the back scale I dont know... what got you
> thinking about that ?  I have tried of course applying to various
> lengths... but it seems the speaking length is the only one where any
> noticeable affect results.
>
> Cheers
> RicB
>
>
>
>         Hi Richard,
>         Interisting. My thought would be that you have masked the load
>         on the string
>         and the thin spot that is deviding the string into unequal
>         parts. Or helping
>         to stop the back scale from ringing.
>         How fast was the false beat/ A slow roll or a rapid twitter or
>         helped in
>         both cases?
>         Joe Goss RPT
>         Mother Goose Tools
>         imatunr at srvinet.com
>         www.mothergoosetools.com
>
>
>
>      > Hi folks...
>      >
>      > I ran into another interesting goodbit dealing with classic false
>     beats
>      > the other day.  Turns out in very very many situations dealing
>     with the
>      > kind of false beat that gets affected by coupling mass to the
>     nearest(s)
>      > bridge pins also reacts positively to the string being <<washed>>
>     so to
>      > speak with protek... valve oil... CA glue... just about anything
that
>      > will stay on the string.  I find that a couple drops of protek
spread
>      > between the bridge pin and the striking point works best.  The
>     effect is
>      > immediate and is accompanied by a predictable pitch drop for the
>     treated
>      > string.  I wouldn't suggest letting any oil or such getting into
the
>      > bridge pin mind you.
>      >
>      > The thing is, this suggests that the classic false beat can be
dealt
>      > with by adding mass to the string itself. Which in turn raises more
>      > questions with regard to the actual cause of the false beat to
>     begin with.
>      >
>      > Cheers
>      > RicB
>      >
>
>