Recrowning the soundboard,something different

[Delwin D Fandrich]

----- Original Message -----
From: "Wayne Hohle" <wayne.hohle@sympatico.ca>
To: <pianotech@ptg.org>
Sent: May 25, 2002 5:10 AM
Subject: Re: Recrowning the soundboard,something different


>
> p.s. is there really  20 tons of pressure on the soundboard or is that on
the
> frame and the pressure at downbearing at the bridge is something different
>

That's overall string tension on the plate. String downforce against the
bridge varies from approximately nothing on a collapsed board with no string
bearing up to, perhaps, 1,000 lbs (450 kgf) on a freshly installed board
with strong string bearing.

Del