Front Duplex

[Kevin E. Ramsey]

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    Bill,=20

    This is a Steinway M from 1995. Looks brand new; no string grooves =
to speak of, knuckles perfect, case perfect, I suspect it saw light =
playing infrequently for most of it's life. Wasn't Susan's article about =
an SD-10? Thanks for the feedback, though.


  ----- Original Message -----=20
  From: Bdshull@AOL.COM=20
  To: pianotech@ptg.org=20
  Sent: Tuesday, March 05, 2002 11:02 PM
  Subject: Re: Front Duplex


  Hi, Kevin:

  How old is this piano?  Does it get some hard playing?   I think that=20
  work-hardening of the string at the "V" bar is responsible for most =
zinging=20
  (agraffe zinging may be different, like on the "L" I had today).  =
Killer=20
  octave V bar zinging is best fixed either by replacing strings or by=20
  re-positioning the string on the V bar - not sideways, but fore and =
aft by=20
  turning the tuning pins, as in Susan Kline's excellent Journal article =
a=20
  couple of years ago.  I discovered this many years ago when I did this =
on a=20
  "C" and the zings went away and the tone bloomed. =20

  I don't like messing with the V bar.  It has surface hardening, which=20
  reshaping may cut through;  any good derived is short-lived.  The =
problem is=20
  the string, which has gotten too hard at the V bar.

  Bill Shull, RPT


  In a message dated 3/5/02 5:37:41 PM Pacific Standard Time,=20
  ramsey@extremezone.com writes:

  << I have a question for the list.
  =20
       What exactly is the proper fix for the "singing of the Steinway =
Angels"
   in the front tuned duplex, that is, when they get a little too =
carried away?
       I had a customer today which was complaining about a kind of =
papery
   noise on a few notes in the killer octave (naturally) area of the =
keyboard.
   It was a Steinway M. It wasn't until it was tuned fully that the =
problem
   became apparent to me. By that time all the other stuff had been =
cleared up
   enough to hear. The front duplexes on some of the long waste end =
notes had a
   kind of zing to them.
       What I did to try to get rid of them was to level the strings =
really
   well while also lifting up on the duplex side of the capo bar to get =
a solid
   seating on both sides of it. When I got done there was still a little =
noise
   there, so I had to do some needling near the crown.
       Is what I did correct? Is there a better way? Am I missing =
something
   here? It worked this time. I really don't like the idea of muting the =
front
   duplex unless I have exhausted every other recourse first. Of course, =
I
   don't like having to deal with these kind of issues on a piano which =
the
   customer paid so much money for, either.
  =20
  =20
  =20
   Kevin E. Ramsey
   ramsey@extremezone.com >>
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