Wapin revisited

[Cy Shuster]

The vertical element is less constrained only at one end of the speaking 
length.  If the terminations were the same on both ends, it would be easier 
to visualize, but every time any vertical pulse comes to the keyboard end of 
the string, it's constrained equally (pretty much) in all directions.

Why the zig-zag on the bridge, anyway?  Why not a half-round with a single 
bridge pin?

--Cy--

----- Original Message ----- 
From: "Ric Brekne" <ricbrek at broadpark.no>
To: "pianotech" <pianotech at ptg.org>
Sent: Saturday, August 12, 2006 4:02 PM
Subject: Wapin revisited


> ...In both the Wapin and the bridge agraffe the vertical element is 
> significantly less restrained... and in both cases sustain goes up with no 
> apparent loss of power... at least in the case of the Wapin. Cheers
> RicB