Capo Buzz

Isaac sur Noos oleg-i@noos.fr
Fri, 17 Oct 2003 09:19:54 +0200


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A short rap at 45? right AND left in front of the capo bar with a brass rod
will help seat the string differently, (cure for false beat also) originally
used for "twisting" strings, it sometime helps.

Taking care not to install a kink in trhe string.

The capo is often badly shaped near the break, it is flatter, I guess the
player's side is nog giving you a clear termination, filing only this side
should possibly help .

The tool I use to space strings with short raps lighten the pressure while
it moves, not perfectly but it its not that bad, it is a pedal rod thinned
like a blade, so it makes a lever effect while moving the string.

Way better than moving them laterally with a string spacer as I did
originally .

Good luck, I like the detuning duplex method with a drip of CA. Concert
tuners use little wedges installed between 2 strings at the front, others a
piece of bushing, temporarely, sometime the temporary get definitive for
sure ..

I've find also that healthy hammers are masking the capo noises very well
by giving the tone a more rich spectra " battery" needling is helping then,
of course not possible with laquered hammers.

Adding a little pressure on the boltsmay change the tone and help mask the
capo noises also.

Best Regards.

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 : caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]De la part de Lance
Lafargue
  Envoye : jeudi 16 octobre 2003 03:25
  A : 'College and University Technicians'
  Objet : RE: Capo Buzz


  I am told that the main problem lies in the V bar, not in the hammer, and
that smoothing the bar with sandpaper will clean up the termination and
permanently fix the buzz.  This is one of the few things I did not do, since
I was really originally only out for a warranty tuning  ;  )    Thoughts?



  Lance Lafargue, RPT

  LAFARGUE PIANOS

  New Orleans Chapter, PTG

  985.72P.IANO

  lancelafargue@bellsouth.net



  -----Original Message-----
  From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org] On Behalf Of
Lance Lafargue
  Sent: Tuesday, October 14, 2003 9:32 PM
  To: caut@ptg.org
  Subject: Capo Buzz



  I have always struggled with the capo buzz in many pianos. Young
Chang/Prambergers I've never succeeded with, Steinways, I usually can do it.
I have discussed this many times with many techs.  I am exhausted after a 14
hour day with three B's one of which is still giving me fits.  It is a new
Steinway B, prepped by a large reputable dealer.  The piano was/is nice.
But it was a little bright after some play and I went in, pitch raised it,
stopped sympathetic aliquot ringing, leveled strings with my Mother Goose
leveling tool, fit hammers to strings, worked on damper bleeding, etc.
There were several hammers, especially the first C at the V bar that had a
buzzing quality.  I sugar coated/voiced, 3/8" needled the shoulders, evened
everything out, got it acceptable, and the buzzing returned, a bit.  Enough
to bug the customer.



  After more sugar coating (shallow needling at crown) and more 3/8" inch
needles just off of the string marks (both straight down and in at an
angle), I am at the point where I am killing the bell quality and volume to
extinguish the metallic buzzes.  I believe these hammers were hardened with
lacquer, not key top solution.  Tapping strings onto bridges, done, seating
strings at every termination point, done.  This exists to some extent
throughout the V bar area.  This is the buzzing that goes away when you put
your finger on the front duplex section.  Just hoping I may hear something
new (hoping not to hear a buzz).  I appreciate any new suggestions, I am so
worn out!



  Lance Lafargue, RPT

  LAFARGUE PIANOS

  New Orleans Chapter, PTG

  985.72P.IANO

  lancelafargue@bellsouth.net



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