False beats - Was spinet octaves

[Richard Brekne]

Clyde

The loose pins idea has been around for a long time, and I think most of us
have ended up having experiences that agree with it. Probably why the theory
has been around so long. No matter how you look at the seating strings
thing, there's little doubt that it's a temporary solution of limited
effectiveness.

I see no reason to be afraid of the epoxy, CA, or similiar solutions. Just
make sure you do it right. You dont want so much epoxy that you change the
termination points for sure.

We've run through methods for this several times now so I am sure a good
look in the archives will yeild you great results for just about every
situation... low and high cost jobs... cheap and expensive pianos... a
solution for each and all.

Cheers

RicB

Clyde Hollinger wrote:

> Friends,
>
> In all my piano technician days (I'm fulltime only eleven years), I have
> mostly ignored doing anything about false beats because I wasn't sure
> what to do with them.  I tried seating the strings which, as Dave says
> here, usually helped little or none.  I've also heard explanations why
> the cause could be poor notching.
>
> In a couple instances I experimented with muting two strings of a treble
> unison and putting a little sideways pressure on the bridge pin of the
> remaining string.  Play the note and, more often than not, the beat was
> gone.  Release the pressure, and it's back.  I think it was guru Ron
> Nossaman who wrote once that 90% of the false beats are loose bridge
> pins.  My meager experiments cause me to tend to agree.
>
> But I hesitate to epoxy the bridge pin on a grand, fearing that the
> epoxy might affect the termination point of the vibrating section and
> make more problems than are solved.  And of course for verticals I
> reckon the piano should be horizontalized.  One of these days I may just
> work up the courage to give it a shot and see what happens.
>
> Regards,
> Clyde Hollinger, RPT
>
> Dave Nereson wrote:
> I tuned a 6-foot Steinert grand today that had a few strings with beats
> in them, that is, beats in just one string of some of the unisons.
> Seating strings didn't help.  Not sure what caused them, but I just got
> them to sound as good as they could.
>
> _______________________________________________
> pianotech list info: https://www.moypiano.com/resources/#archives

--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html
http://www.hf.uib.no/grieg/personer/cv_RB.html