[pianotech] Weighing Off A Schafer Grand

[David Love]

Symptoms seem to point to poor leverage.  Sounds like there's already too
much lead.  Take upweight and downweight samples on 10 - 15 notes through
the scale and post it.  Also how many leads in the bass, mid tenor and
treble and approximately where they are located in reference to the balance
rail (closer to the BR or closer to the front)

 

David Love

www.davidlovepianos.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Patrick C. Poulson
Sent: Friday, January 29, 2010 4:31 PM
To: pianotech at ptg.org
Subject: [pianotech] Weighing Off A Schafer Grand

 

 Hello all: I have a client who recently bought a 4 year old Schafer STG-157
grand. It has a reasonably good tone with hardly anytime playing time on it,
but the action is heavy. Downweight is over 60 grams everywhere except in
the top octave. I checked for excess friction and regulation problems, but
found nothing unusual. I can reduce the hammer moldings some, but I don't
think that there's enough excess material to bring the touchweight down to
an acceptable range. My conclusion is that the keys need to be weighed
often. There are 3 - 4 leads in the keys already, but it seems that more are
needed to balance the action. Is there anything I'm missing here? I will, of
course, check the friction in the wippens and look for any other cause of
the heaviness, but the symptoms seem to be point to weighing off.

Thanks,

Patrick C. Poulson
Registered Piano Technician
530-265-1983

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