Board stiffness, was Hammer Types

[Jason Kanter]

As I'm hip deep in scaling spreadsheets, my curiosity is aroused... What's 
an easy [elegant] way to assess how stiff a soundboard is? Perhaps when one 
evaluates a restringing, one wants to match the scale tension to the board.

Thanks
Jason

----- Original Message ----- 
From: "David Love" <davidlovepianos at comcast.net>
To: "'Pianotech List'" <pianotech at ptg.org>
Sent: Friday, October 06, 2006 7:00 AM
Subject: RE: Hammer Types


<snip>
> I think you can draw the conclusion that generally speaking the lower the
> tension and lighter (or less stiff) the board the softer the hammer that 
> is
> required.  One problem is that not all scales match the boards they are 
> on.
> You see low tension scales on a relatively stiff boards, high tension 
> scales
> on loose boards and all kinds of combinations both by design and because 
> of
> changes in the s/b assembly over time. ...
> David Love
> davidlovepianos at comcast.net
> www.davidlovepianos.com