[CAUT] Friday puzzler: Won't play on hard blow

[Scott E. Thile]

Spacing of the whippens relative to the shanks and/or knuckles? The adjacent
knuckle is holding the repetition lever down, therefore not allowing the
jack back under all the way?  

 

Scott (Murray State)

 

From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
reggaepass at aol.com
Sent: Friday, October 29, 2010 4:48 PM
To: caut at ptg.org
Subject: Re: [CAUT] Friday puzzler: Won't play on hard blow

 

This is more fun than I thought it would be.  I've posted this puzzler on
both lists and the two groups are at about the same point (if you remove Ed
Sutton's formidable contributions from the mix, anyway).  To review for one
and all, the instrument in question is a mainstream grand piano of
relatively recent vintage.  The answer is neither of the first two things
that came to the minds of so many of us, cheating jack and too-close back
check (sounds like a country music duo, don't it?).  Nor is it a broken
keystick or any of Ed Sutton's deeper speculations (on the CAUT list) about
flexing balance rails and broken keybeds (man, Ed, you have seen some pretty
interesting stuff!).  Also, it is not Catastrophic Action Failure--remember,
it is not a repeated note thing--or a foreign object.

 

Time for more information:  There are two problem notes, one in the bass and
one in the lower treble.  The worse one is in the bass, probably because of
the greater mass of the hammer (compared to the other one).  When these
notes won't play on a hard blow, one of their neighboring hammers moves
slightly.

Going kayaking--back later, 

 

Alan E.

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