[pianotech] Hammer Line Issue

[Barbara Richmond]

Ah--of course.  I'm still wondering why the hammers were off the rail.  It doesn't happen often (except on those pianos where it happens seasonally) and I'm always a little alarmed when I see it. 



br 




----- Original Message ----- 
From: "Jeff Deutschle" <oaronshoulder at gmail.com> 
To: pianotech at ptg.org 
Sent: Monday, May 11, 2009 9:39:26 AM GMT -06:00 US/Canada Central 
Subject: Re: [pianotech] Hammer Line Issue 

Barbara: 

The hammer rail wasn't moved back, the action was swung out. I guess 
this created some lost motion. Then bobbling hammers was brought up 
and the thread went south to the damper springs. 

On Mon, May 11, 2009 at 10:18 AM, Barbara Richmond <piano57 at comcast.net> wrote: 
> 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 
> 
> 



-- 
Regards, 
Jeff Deutschle 

Please address replies to the List. Do not E-mail me privately. Thank You. 
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