Capo Buzz

[Ed Sutton]

This is a multi-part message in MIME format.

---------------------- multipart/alternative attachment
Lance-

Another long shot hope-  The buzz may be happening on the front duplex =
bar. If so, short of reshaping the bar, shoving a tiny sliver of card =
under the string might stop the buzz.

I'll mail my old Revenko-Jones notes tomorrow.  Maybe Ron Koval will =
send the latest!

Ed
  ----- Original Message -----=20
  From: Lance Lafargue=20
  To: 'College and University Technicians'=20
  Sent: Monday, October 20, 2003 9:18 AM
  Subject: RE: Capo Buzz


  So I guess my narrowed question is, given all of these excellent =
posts, is:  With a new B, should I increase the angle and slightly =
narrow the bar on the speaking length side, given everything else I have =
tried?  Is there some consensus, given the problems with the design?  =
And how do I determine if I have a "soft" V-bar?  Voicing did nothing =
permanent but continue to weaken the piano.  I plan to call Steinway =
first before I do anything further.  This owner of a new B is currently, =
officially, depressed  ;  )=20

  =20

  I may first experiment with yarn in the duplex and PVCE glue on that =
segment, before shaping the bar. =20

  =20

  Lance Lafargue, RPT

  LAFARGUE PIANOS

  New Orleans Chapter, PTG

  985.72P.IANO

  lancelafargue@bellsouth.net

  =20

  -----Original Message-----
  From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of =
Horace Greeley
  Sent: Saturday, October 18, 2003 11:02 PM
  To: College and University Technicians
  Subject: Re: Capo Buzz

  =20


  Ron,

  At 09:47 PM 10/18/2003 +1100, you wrote:



  At 7:22 PM -0400 18/10/03, Ed Sutton wrote:




  . . . Within the constraints of the S & S design, there are 3 causes =
of buzz: poorly shaped capo, capo bruised by rough stringing, capo too =
soft due to failure to case harden in casting.


  Plus the fallacious practice of attempting to set the font duplex =
length to a harmonic of the speaking length.


  I totally agree with your assessment; and think that this practice has =
to do with a basic misunderstanding of what the front duplex is supposed =
to do. =20

  The patent drawings help support this assumption.  I do not remember =
the patent descriptions sufficiently well to know if they confirm or =
refute what might be construed from the pictures as being a reinforcing =
system.  This is further complicated, I think, by the presence of the =
movable cast front duplexes still seen on so many older S&S pianos.

  I'm sure that there are others on the list who are much more current =
with this stuff than myself...maybe they'll speak up.

  Best.

  Horace

  P.S. - Almost forgot, I've heard some very good compliments about an =
instrument of yours that a friend of mine heard in Syndey...Opera House, =
maybe?  Good Show!!!

  hg




---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/caut.php/attachments/eb/59/65/87/attachment.htm

---------------------- multipart/alternative attachment--