[pianotech] Hammer Line Issue

[Barbara Richmond]

I haven't been following too closely, and maybe someone brought this up, but how would moving the rail back make hammers--that were already off the hammer rail--rest on it?  



First, what was the pattern of hammers off the rail? 



Then I could rule out possibilities---  



1. The hammer rest rail cushions need beefing up. 

2. Climate change affecting the keybed.  

3. Critters or something else screwing around with/rearranging/leaving extra stuff on/ the back rail felt. 

4. Somebody (who didn't know what they were doing) was in there trying to adjust the capstans. 



??? 



I'd have to go back and read to figure out how we got to the damper spring thing.  But, yes, Ed, even really, really strong damper springs have been neglected by technicians for eons--at least in my neck of the woods.  



Barbara Richmond, RPT 

near Peoria, Illinois 







----- Original Message ----- 
From: "Ed Sutton" <ed440 at mindspring.com> 
To: pianotech at ptg.org 
Sent: Monday, May 11, 2009 4:15:20 AM GMT -06:00 US/Canada Central 
Subject: Re: [pianotech] Hammer Line Issue 

 
Here's Matthew's first post: 

>I went to tune a clients piano today.  It is a Kawai Console, year 1986. 
  
>The very first thing I noticed was the hammer line was totally screwed up.  Some of the hammers were resting on the rail, and others were off the >rail.  I unscrewed the action bracket nuts and pulled the action back a little until all the hammers were resting on the rail. " 

What is the likelihood that the piano had overly strong damper flanges, un-noticed for 22 years ?  The customer didn't complain of bobbling hammers. That problem occurred after Matthew adjusted the capstans and let-off. We are into the second or third stage of treatment without diagnosis. 

ES 
  
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