[pianotech] Hammer strike line. Was-----Yamaha Hammer Suggestion

[David Love]

In my experience the crown is not necessarily shifted forward since the rib
is formed in a uniform radius.  There is certainly more control of the
stiffness in the killer octave of an RC&S board since it is determined by
the rib design and not by the unpredictability of compression crowning.  

 

David Love

www.davidlovepianos.com

 

From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of PAULREVENKOJONES at aol.com
Sent: Sunday, February 07, 2010 7:21 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Hammer strike line. Was-----Yamaha Hammer
Suggestion

 

David:

 

In your experience, is the crown set further forward in the killer octave in
RC&S boards? Is there a greater stiffness that comes with that construction
in the killer octave? Random questions...

 

P

 

In a message dated 2/7/2010 9:18:48 P.M. Central Standard Time,
davidlovepianos at comcast.net writes:

I agree it seems about the soundboard but what specifically about the change
in design accounts for that difference.  The answer is not jumping out at
me.

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Ron Nossaman
Sent: Sunday, February 07, 2010 6:16 PM
To: pianotech at ptg.org
Subject: Re: [pianotech] Hammer strike line. Was-----Yamaha Hammer
Suggestion

David Love wrote:
> I've found the same thing.  Strike line deviation being necessary on
> original boards but when I replace the board on the same piano with a RC&S
> board the strike line seems to straighten out, or the curve becomes
> unnecessary.  What's that about?  

It's about the soundboard, I'd say.
Ron N

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