[pianotech] Shank questions

[Dale Erwin]

Perhaps using a water thin epoxy like rot doctor to quickly coat the average set of wooden shanks would seem to me to add some stiffness as well and secondarily....
  humidity resistance. Just muttering out loud here.

 

 

Dale S. Erwin
www.Erwinspiano.com
209-577-8397
"We are what we repeatedly do.
 Excellence then, is not an act, but a habit."
-Aristotle



 

 

-----Original Message-----
From: Mark Dierauf <pianotech at nhpianos.com>
To: pianotech at ptg.org
Sent: Thu, May 26, 2011 5:39 am
Subject: Re: [pianotech] Shank questions


              Have you seen the Kawai high-speed videos of hammer/string contact?    There's a lot going on with the hammerhead oscillating all over the    place. If that oscillation is expanded into another axis I could    easily imagine it having a tonal effect, which would seem unlikely    to be positive. When my own piano gets  
    a new set of hammers I may try one or two of the carbon shanks in    each section to see just how much tonal difference is actually    perceptible, and whether I like or dislike that difference. I like    the theoretical advantages that these shanks offer - uniformity of    stiffness, impervious-ness  to humidity, and customizable knuckle    position - but honestly what matters most is whether or not they    make the piano sound better. So far that is not at all    obvious to me from the few examples I've heard. Keeping my fingers    crossed, though!
    
    - Mark
    
    On 2:59 PM, Encore Pianos wrote:    
                        
        
My experience            with the WNG shanks is as Mark describes, and do seem to            twist more than wooden shanks.  How important is this  in            relation to a hammer striking a string?  Not sure that it             is meaningful.  
        
 
        
Will Truitt
        
 
        
From:            pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org]            On Behalf Of Ed Foote
            Sent: Wednesday, May 25, 2011 6:35 PM
            To: pianotech at ptg.org
            Subject: Re: [pianotech] Shank questions
        
 
        
          
            
At 15:44 -0400 25/05/2011, Mark Dierauf wrote:
            
 
            
>Interestingly, although the WNG shanks are stiffer than your average 
            
>wooden shank, they seem to be noticeably more prone to twisting.
            
 
            
 Hmm,  this is the first time I have heard of this, and the several WNG shanks I have seen with hammers on them 
            
 didn't' seem to twist nearly as much  as wooden ones did.  What anecdotes do others have? 
            
Regards, 
            
Ed Foote rpt
          
        
      
    
    
  
 
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