[pianotech] Best way to change touch on Yamaha Grand

Fri Jan 8 07:34:40 MST 2010

Martin, since Barbara hasn't replied, I will give you a quick rundown.

Remove the stack and keys.
Put a drop of glue on the back of the felt punching and put the key back on the pin and press down. I do 3 to 5 at a time.
Let it dry for about an hour or so.
Remove the keys ( the punching should come up with the key).
Using a sharp chisel cut the punching at an angle toward the front of the key (\) not straight down (I). You can start in the center of the hole or the front of the hole. 
Be sure to line up the cut with key front, not the area where the punching is, so the cut is lined up with the key travel.
Return key to frame.

That should do it.

Al - 
High Point, NC
  From: martin cipolla 
  Sent: Friday, January 08, 2010 8:59 AM
  To: pianotech at ptg.org 
  Subject: Re: [pianotech] Best way to change touch on Yamaha Grand

  Barbara,  Please clarify for me.  I seem to be a bit slow on this.  How would I cut the punching to affect the greatest change?  I am assuming I need to take off the action stack etc. and remove each key, or is there also a "trick" for that?  That would be cool.
  Thanks you for your help with this.
  Marty

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  Date: Fri, 8 Jan 2010 02:09:01 +0000
  From: piano57 at comcast.net
  To: pianotech at ptg.org
  Subject: Re: [pianotech] Best way to change touch on Yamaha Grand

  Or recycled ideas.  :-)   One thing I didn't mention, is you can adjust the amount of change by where exactly you cut the punching--making the cut exactly half way though at the balance hole point, or a little further back, etc.  

  I have a blast working on actions that people complain about being too heavy.   I like doing the detective work and solving the puzzle--there have been some interesting ones!  

  Barbara Richmond, RPT
  near Peoria, Illinois

  ----- Original Message -----
  From: "Denise Rachel" <pp-ff at verizon.net>
  To: pianotech at ptg.org
  Sent: Thursday, January 7, 2010 4:12:50 PM GMT -06:00 US/Canada Central
  Subject: Re: [pianotech] Best way to change touch on Yamaha Grand

  Excellent.  I love new ideas . . .  

  D

  On Jan 7, 2010, at 5:09 PM, Barbara Richmond wrote:

    Hi Denise,

    The half punching is used at the balance rail, the conical (Crescendo) punchings are front rail punchings--or maybe I'm not understanding what you are referring to.   

    In this case, maybe quick and dirty is a little overstated.  But it is a lot faster (and easier to un-do) than moving capstans or knuckles or reducing the hammer weight.  I've used this method on pianos where the touch was just a little heavy.  

    An added bonus is that leveling keys on the pianos with the glued on punchings is a snap--there is no lifting of the cloth punching when adding or subtracting paper punchings, since the punching lifts with the key. 

    Best,

    Barbara Richmond, RPT
    A guy in a bobcat took pity on me while I was shoveling snow and cleared the rest of the driveway for me...near Peoria, Illinois

    ----- Original Message -----
    From: "Denise Rachel" <pp-ff at verizon.net>
    To: pianotech at ptg.org
    Sent: Thursday, January 7, 2010 3:42:45 PM GMT -06:00 US/Canada Central
    Subject: Re: [pianotech] Best way to change touch on Yamaha Grand

    Thanks Barbara, 

    They didn't teach any "quick and dirty" at school, so I'm glad I have all of you to help out with this!  Awesome.

    Have you ever used those punchings that are conical?  Seems they operate on the same principle.  I've never seen them or any glued half punchings in pianos to date.  But then the year is still new. . . . . 

    Cheers,

    Denise

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