Baldwin termination bars

[Isaac OLEG]

On that kind of capo problem if only a few strings, a good rap right
then left the string near the termination helps to seat it better in a
"refreshed place" and it cures the zing , at last temporary (a rap
with a brass rod as used to move the strings in the capo sections)


Isaac OLEG

Entretien et reparation de pianos.

PianoTech
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> -----Message d'origine-----
> De : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de
> Roger Jolly
> Envoye : vendredi 13 juin 2003 01:56
> A : College and University Technicians
> Objet : Re: Baldwin termination bars
>
>
>
> Hi Fred,
>               The early termination pieces were made of
> mild steel., They
> had the problem of grooving over a period of time with just
> the abrasion of
> tuning.  Remove them resurface the profile.  Heat to a dull
> cheery red and
> quench in a bucket of water.  Better yet take them to a good
> machinist/backsmith, and have him case harden them.
> The newer terminations are case hardened, and had a new
> profile (radius)
> plus if you look carefully you will see they are different
> lengths. so as
> to be detuned from the fundamental.
>
> Regards Roger
>
>
> At 09:37 AM 6/12/2003 -0600, you wrote:
> >         A colleague of mine (not subscribed to the list)
> has a problem
> > with a Baldwin concert grand in his care. It is a "modern
> design" Baldwin
> > - plate suspension system, acujust hitch pins, front
> termination system -
> > but an early version. Specifically, instead of individual
> "termination
> > units" (or whatever Baldwin calls them) for each unison,
> there is a
> > composite section for each of the upper treble sections.
> (Here a moment
> > of doubt enters my brain. I don't work on very many
> Baldwin grands, but
> > my impression is that every one I have seen has
> individual units for each
> > unison. Maybe my recollection is faulty. If so, please
> correct me,
> > somebody). By termination unit, I am referring to the
> substitute for capo
> > and v-bar, which terminates the speaking length and
> provides a duplex
> > segment as well.
> >         The problem my colleague has described to me
> seems to be linked
> > to one of the termination sections. The symptom is a
> "zingy" sound, and
> > it is present in all but the last 2 to 3 notes of the
> section (the lower
> > of the two). Other potential sources of this noise seem
> to have been
> > eliminated from possibility.
> >         THe "zing" phenomenon was present previously to
> some extent, but
> > suddenly (overnight, according to the owner, who is an
> accomplished and
> > dedicated pianist - recording artist and performer) it
> got much worse.
> > After trying a wide range of potential cures (none
> successful), my
> > colleague tightened the allen screws which attach the
> unit to the plate.
> > He said every one could be turned a bit, some quite a
> bit. THis didn't
> > eliminate the problem, but it made a marked improvement.
> >         From the foregoing (and a lot of additional detail I am
> > omitting), it seems pretty clear that there is some
> problem with this
> > "termination section." The owner can't do without the
> piano for some
> > months, so further examination will be put off. It will
> probably involve
> > lowering tension of that section, quite likely removing
> those strings and
> > the the termination section and examining it.
> >         Does this ring any bells for any of you. I am
> thinking Baldwin
> > would have had a good reason for changing from sectional units to
> > individual ones for each unison (if I am right that they
> did this). IOW,
> > they had warrantee problems. Did they develop cracks? If
> so, how would
> > one deal with them? Any feedback and suggestions would be
> most appreciated.
> >         I should add that this instrument has been
> through a lot. It was
> > a touring concert instrument for many years, and could
> have suffered any
> > number of jars and drops over time. And the musician,
> though not by any
> > means destitute, is also not rolling in cash. So really
> major things like
> > plate replacement would not be in the cards.
> >Regards,
> >Fred Sturm
> >University of New Mexico
> >_______________________________________________
> >caut list info: https://www.moypiano.com/resources/#archives
>
>
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