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<DIV>Ric,</DIV>
<DIV> </DIV>
<DIV>I agree that maybe the hammers and/or keys may be too heavy and perhaps
only in certain sections. Ideally if you could measure the strike weight
and front weight, you could determine if something was out of whack even if DW,
UW, & ratio look normal. Three half inch leads could mean anything depending
on how much the half inch weight weighs (there are many variations) and
placement. </DIV>
<DIV> </DIV>
<DIV>Jude Reveley, RPT<BR>Absolute Piano Restoration, LLC<BR>Boston,
Massachusetts</DIV>
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<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=Byeway222@aol.com
href="mailto:Byeway222@aol.com">Byeway222@aol.com</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=pianotech@ptg.org
href="mailto:pianotech@ptg.org">pianotech@ptg.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Thursday, July 13, 2006 11:15
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Grand touch</DIV>
<DIV><BR></DIV><FONT id=role_document face=Arial color=#000000 size=2>
<DIV>Hello List,</DIV>
<DIV>It has been fascinating reading the posts on inertia, initially sparked
off by my original posting on the Petrof action I am dealing with.
Unfortunately I still don't have any further clarification as to whether
inertia is the problem. I have been back to the piano and checked
certain areas which I had not previously been able to do. If I could
reiterate, the situation is:-</DIV>
<DIV> </DIV>
<DIV>A Renner action in a 12 year old Petrof concert grand which feels heavy
and tiring to pianists.</DIV>
<DIV>The D/W average is 48g and U/W average 28g. Action ratio around
5.5</DIV>
<DIV>The regulation is not perfect but is good.</DIV>
<DIV>The damper pick up point is right.</DIV>
<DIV>The keys are not binding at the balance point or at the capstan.</DIV>
<DIV>The key weighting goes from 3 half inch weights in the bass through a
(curious) tenor octave of 4, then to 2 and 1. Obviously, the positioning
of weights is crucial but without photos I can only describe the
positioning as not looking unusual in any way.</DIV>
<DIV>I noticed that the whippens are the Renner design to take a helper
spring. I don't see evidence though, that a set of springs or looped
flanges has been removed. They are usually just unhooked if a technician
decides against them.</DIV>
<DIV> </DIV>
<DIV>So, given that friction does not appear to be a problem in the general
feel of the action, what would be your next steps in solving the
problem.</DIV>
<DIV> </DIV>
<DIV>ric</DIV>
<DIV> </DIV>
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