[CAUT] Shimming the Steinway Action stack to reach the strings

[Chris Solliday]

yes and as you raise the whole business up toward the strings the hammer
does not travel as far and its arc is interrupted sooner causing under
centering.
Chris
----- Original Message ----- 
From: "David Ilvedson" <ilvey at sbcglobal.net>
To: <caut at ptg.org>
Sent: Friday, February 26, 2010 3:39 PM
Subject: Re: [CAUT] Shimming the Steinway Action stack to reach the strings


> Under means before 90 degrees and Overcentering is what you would get with
hammers filed too many times...right?
>
> David Ilvedson, RPT
> Pacifica, CA  94044
>
> ----- Original message ----------------------------------------
> From: "Chris Solliday" <csolliday at rcn.com>
> To: caut at ptg.org
> Received: 2/26/2010 12:21:37 PM
> Subject: Re: [CAUT] Shimming the Steinway Action stack to reach the
strings
>
>
> >oops I said over and meant under centering. I hate when that happens.
> >Chris
> >  ----- Original Message ----- 
> >  From: Chris Solliday
> >  To: caut at ptg.org
> >  Sent: Friday, February 26, 2010 2:58 PM
> >  Subject: Re: [CAUT] Shimming the Steinway Action stack to reach the
strings
>
>
> >  String Height minus Hammer Bore equals Shank Center Pin Height. We use
> >laminated shim stock that we get from the local hobby store. Realize that
just raising
> >the pin height MIGHT work, but consider the arc of the hammer blow. You
could end
> >up with the hammer over centering if you simply raise the feet under the
hammer
> >flange pins. You need to imagine the pin in space and rotate the stack
around it so
> >that the stike point ends up at ninety degrees to the string. It might
not be that
> >now. Usually this means shimming the front foot slightly as well. Best of
luck Andrew.
> >  Chris Solliday, RPT
>
> >    ----- Original Message ----- 
> >    From: Andrew Anderson
> >    To: caut at ptg.org
> >    Sent: Friday, February 26, 2010 12:45 PM
> >    Subject: Re: [CAUT] Shimming the Steinway Action stack to reach the
strings
>
>
> >    Yes, mea culpa.  Wasn't really thinking the numbers...most likely 2"+
>
>
> >    On Feb 26, 2010, at 11:30 AM, reggaepass at aol.com wrote:
>
>
>
>
> >        The school whose Steinways I service is not satisfied with the
dealer's warranty
> >fix (greater then 1" blow distance).
> >      Andrew,
>
>
> >      Not sure what you mean by this ("greater then 1" blow distance").
Did you mean
> >greater than 2" (since it sounds like the strings are too high)?
>
>
> >      Alan Eder
>
>
>
>
>
> >      -----Original Message-----
> >      From: Andrew Anderson <andrew at andersonmusic.com>
> >      To: College and University Technicians <caut at ptg.org>
> >      Sent: Fri, Feb 26, 2010 9:13 am
> >      Subject: [CAUT] Shimming the Steinway Action stack to reach the
strings
>
>
> >      The school whose Steinways I service is not satisfied with the
dealer's warranty
> >fix (greater then 1" blow distance). They are requesting that the piano
be made to
> >play like it should which will require shimming the stack so it is within
reach of the
> >strings (>1/4" between fully backed out drop-screws and pinblock).
> >
> >      Has anyone done this? What was the scope of work required? What is
a
> >reasonable amount of time to complete the work?
> >
> >      Thanks
> >      Andrew Anderson
>