Bass String Coils

[Isaac OLEG]

Hello,

Indeed 3 fingers do the trick, but there are slight departure in the
medium where the slack is larger, and the string give a lot more than
in the treble. String elongation can be computed in scaling
spreadsheet it is interesting to see.

Fastest method at this day is to pre-cut lenght of strings In the
piano (the end being installed in the tuning pin hole)

After having prepared those pre-cut lenght for a whole range of
numbers (or half range if you prefer), I pop up the end of the string
from the hole, with a finger's nail, directly in the pin holded in the
little turning crank for coil making.

With a little habitude the coils are made in the same move than
extracting the string from the  wrestplank hole.

As usual, less moves = more speed.

A good rebuilder here strings up to 2 pianos/week, and can change
strings/pins in a grand in some 20 hours work on site (dampers back,
chipped and tuned...)

And as we dicovered the Danair Palm Nailer, speed will grow even more
...

I bet that one can compute the circumference of the pin, plus the
becket's lenght, and compute the desired lenght.

Greetings.

Isaac OLEG


Isaac OLEG

Entretien et reparation de pianos.

PianoTech
17 rue de Choisy
94400 VITRY sur SEINE
FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
cell: 06 60 42 58 77

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de David Love
> Envoye : jeudi 12 juin 2003 09:14
> A : PTG Piano Technicians Guild List; Blaine Hebert
> Objet : RE: Bass String Coils
>
>
> I measure the cutting point for coils using a piece of
> plastic tubing
> (about 1/8" in diameter which is slipped over the end of
> the wire) cut to
> 3" for three coils and 4" for four coils.  When measured
> from the center of
> the hole in the plate, that will produce a wrap in which
> the becket stops
> just past the point at which the string leaves the pin in
> the direction of
> the agraffe, i.e. three wraps plus a little, on average.
> Any deviation in
> the position of the becket can be adjusted by adding or taking away
> slightly from the measured length.   Note that the longer
> the string, the
> more care must be taken to pull the string taut when
> measuring.  I slip the
> tubing over the waste end, slide it down to the tuning pin
> hole, grip the
> wire in the waste area with the cutters to pull it taught,
> align the tubing
> with the tuning pin hole and squeeze it to hold it in
> place, move the
> cutters down to the end of the tubing and cut.
>
> David Love
> davidlovepianos@earthlink.net
>
>
> > [Original Message]
> > From: Blaine Hebert <blaine.hebert@att.net>
> > To: PTG Piano Technicians Guild List <pianotech@ptg.org>
> > Date: 6/11/2003 11:53:51 PM
> > Subject: Bass String Coils
> >
> > Today I saw a pair of replaced bass strings on a nice
> Steinway.  This
> > instrument was being considered for purchase by a good
> player but it had
> > one bass note with a bad overtone.  The store ordered a
> pair of new
> > strings and another tech put them in.  After installation
> the coils on
> > both new strings matched the original stringer's coils
> exactly.  I am
> > pretty good at matching coils and can recognize good work; I was
> > impressed.
> >
> > My survey question is; what is the technique that you use
> to match pin
> > coils to come out at exactly the same angle as the
> original stringing
> > job?  Do you use "three fingers"?  Measure past the pin?
> >
> > Blaine Hebert  URPT
> >
> > _______________________________________________
> > pianotech list info: https://www.moypiano.com/resources/#archives
>
>
>
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