Backcheck noise

[Serge Harel]

David

I got good result to fix it by changing the S&S badcheck with top
quality Yamaha or Renner backcheck.
The cheap buckskin make the problem.

Serge Harel



-----Message d'origine-----
De : pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] De la
part de David Love
Envoyé : 3 août 2006 20:20
À : 'Pianotech List'
Objet : RE: Backcheck noise


Tails aren't rough (in fact I tried sanding them even smoother to no
avail) and the radius seems correct in terms of the amount of tail in
contact with the backcheck.  This is not a hard checking problem, it's
more an issue of noise.

David Love
davidlovepianos at comcast.net 
www.davidlovepianos.com

-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
Behalf Of A440A at aol.com
Sent: Thursday, August 03, 2006 4:12 PM
To: pianotech at ptg.org
Subject: Re: Backcheck noise


<<  new Steinways recently with very loud hammer
tail to backcheck leather contact noise--especially audible on a soft
blow. The leather looks and feels relatively normal but the noise is
definitely
bothersome.  What is the likely cause and remedy.   >>

Tails too rough.  I can get good checking when I leave them pretty
smooth on

a radius is about 3" but it seems that factory hammers are often much
steeper 
than that and depend on rough tails for checking security. 
    Sometimes, the new hammers don't have enough material left on the
tail to 
correct the radius, <sigh>. 
Regards, 
 
Ed Foote RPT 
http://www.uk-piano.org/edfoote/index.html
www.uk-piano.org/edfoote/well_tempered_piano.html