Key frame Bedding

[Garret Traylor]

That would make it a pinch type key frame like Steinway? Yes?

Kindest Regards,

Garret 

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of erwinspiano at aol.com
Sent: Monday, July 07, 2008 2:40 PM
To: ilvey at sbcglobal.net; pianotech at ptg.org
Subject: Re: Keyframe Bedding

 

Yes, putting a little stress on the keyframe. Actually it would be under a
tensioning stress. I heard it first from R.Jolly & David Andersen. Whatever
it works.
  Dale




Stressing the keyframe?   

David Ilvedson, RPT
Pacifica, CA 94044

Jon
  Nice idea. Easy visual.  My kind of tehnique. Jon You probably of
experienced this alreay. Stressing the keyframe a bit more also improves the
sound. I've heard it dramtically on many pianos. It has to do with coulping
the keyframe more intensely to the bed. 
 
  Dale



Let's try something different, a piano related topic: 
 
An easy way to set the glide bolts is with a caliper. 
 
With the glide bolts off the keybed, measure a key 
height in front of the bolt. Reset the caliper to .015" 
to .020" higher and turn the bolt until the key touches 
the caliper. Plus .010" at the ends is sufficient. 
 
Apply slight upwards lift at the stack to see if the 
glide bolt still knocks and tweak as needed. 
This is an easy way to apply even pressure across. 
 
Longer keys would necessitate a wider gap 
measured with the caliper. 
--  
Regards, 
 
Jon Page 

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