False Beats in high treble after stringing

[Greg Newell]

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Dave,
         Are you sure that the false beats are coming from the bridge end o=
=20
the string?

Greg Newell



At 09:09 PM 6/9/2003, you wrote:

>Just finished stringing my Wing and Sons upright piano project and have=20
>quite a few false beats in the last two octaves of treble in single=20
>strings.  My first restringing project.  Phil Bondi suggested that I ask=20
>on-list for advice.  The treble bridge seemed (to me anyway) to be in=20
>pretty good shape.  About 1/3 of the bridge pins were loose and I had=20
>removed and replaced after putting epoxy on the ends of the pins.  Also a=
=20
>little epoxy whereever there appeared to be any hints of small cracks near=
=20
>the pins.    Great results, except in certain strings of the high treble.=
=20
>Other than there, the piano sounds great.   I don't see anything different=
=20
>about these strings or the bridge from other strings, but I think I need=20
>to fix if possible.  For example, B6 center string has a beat of about 2=20
>bps.  Not as loud as a real beat between two strings, but still=20
>THERE.   Some higher strings beat faster.
>
>I have experimented with seating the strings with my copper rod, at each=20
>bridge pin.  Also tried tapping each bridge pin in a small bit.  Doesnt=20
>seem to help, except in certain strings.  I did lightly sand and buff the=
=20
>v-bar before restringing, and think I have the right adjustment on the=20
>pressure bar.  I've been reading the archives and the PTG CD articles re=20
>false beats, but the number of "hits" for this search term is overwhelming.
>
>Can anyone offer me advice on what to do next to reduce the false beats,=20
>short of unstringing and recapping bridge, etc?  I would appreciate your=
 help!
>
>Frustrated in Florida,
>
>Dave Smith
>SW FL
>
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>
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Greg Newell
Greg's piano Fort=E9
mailto:gnewell@ameritech.net=20

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