damper lift

[Carl Meyer]

Sounds good, Jon.  Thanks.

Carl Meyer  Assoc. PTG
Santa Clara, California
cmpiano@attbi.com 

----- Original Message ----- 
From: "Jon Page" <jonpage2001@attbi.com>
To: <pianotech@ptg.org>
Sent: Friday, February 22, 2002 2:16 PM
Subject: Re: damper lift


> At 12:23 PM 2/22/2002 -0800, you wrote:
> >List:
> >Again I forgot to measure the height of the key end that lifts the damper 
> >when the hammer is half way to the string.
> >Is there a relationship?  I want to set up the dampers now without the 
> >stack on the key frame since I'm waiting for the Ronsen hammers to arrive.
> >Would it be logical to assume that one-half stroke of the key would result 
> >in one-half hammer travel to the strings?
> 
>          The damper lifts when the key is depressed one third it's travel. 
> Figure: (KeyDip - Aftertouch)/2 = hammer at half blow
> 
> >I think that's what I'll do and correct it later if necessary.  I can glue 
> >on the dampers now and be that far ahead after I get the hammers, shanks 
> >and flanges installed.
> >
> >BTW what do you guys think of damper lift.  Do you favor early or late 
> >lift referred to half travel?
> 
>          I prefer to install new dampers a shade late, say at 5/8 rather 
> than at 1/2 hammer travel. This way the felt will compact
>          and the lift will not be too early.  I usually end up resetting 
> after a few months the 1/2.
> 
> 
> 
> Regards,
> 
> Jon Page,   piano technician
> Harwich Port, Cape Cod, Mass.
> mailto:jonpage@attbi.com
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
>