[CAUT] Hammer wear, was Re: Re. Flight of Broken Bass String

[Delwin D Fandrich]

I'm not at all surprised. Some years back I ran some life tests on various
action parts, including hammers.
 
I observed that less resilient hammers (so-called "hard-pressed" German and
Japanese hammers) grooved faster than more resilient hammers. The other hammers
in the test were standard Baldwin grand hammers and Ronsen hammers w/Bacon felt
sized to match the Baldwin hammers. Standard Baldwin hammers without lacquer
lasted longer than an adjacent hammer from the same set but with lacquer and the
Ronsen hammers without lacquer lasted longer than hammers from the same set with
lacquer.
 
Del
Delwin D Fandrich
Piano Design & Fabrication
620 South Tower Avenue
Aberdeen, Washington 98520  USA
Phone  360.736-7563
<mailto:fandrich at pianobuilders.com>
<http://www.pianobuilders.com <http://www.pianobuilders.com/> >



  _____  

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Porritt,
David
Sent: March 27, 2006 4:29 PM
To: College and University Technicians
Subject: Re: [CAUT] Hammer wear, was Re: Re. Flight of Broken Bass String


Wim:
 
I think it has to do with the type of hammer.  I did some action work on a
Steinway M today that is two years old.  I had filed the hammers last August and
the grooves are serious now.  The Wurzen felt hammers I hung last summer are
still looking very good.  All these are in practice rooms with the same kind of
playing by a variety of heavy hitters.
 
dp
 
 
 

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