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

[David Ilvedson]

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