wim/pitch raise experiment

[Dave Nereson]

----- Original Message -----
From: <Bigeartb@AOL.COM>
To: <pianotech@ptg.org>
Sent: Wednesday, January 09, 2002 9:37 PM
Subject: wim/pitch raise experiment


> List:
> Clarification to original message.... I believe steam cleaning put
addition
> pressure on the soundboard, adding massive amounts of pressure on all the
> strings, in turn adding too much pressure on the harp.....thus pulling the
> nose bolt from the  frame....finally BREAKING THE HARP. Could be wrong....
>
> Tommy Black
> Birmingham, Ala. Chapter

Clarification to reply.......I thought you were kidding.
 Nah!!!  The plate was weak ... had a flaw...couldn't take the pitch raise
and it broke.  It probably yanked the nose bolt out of the back post as it
did so.   The carpet cleaning the next day was coincidental and provided a
handy excuse for (lucky) you.   That's the way I see it, anyhow.  How can a
soundboard pull on a nose bolt enough to break a plate?  They're not even
attached  -- the nose bolts go from the backposts right thru holes in the
soundboard (no pressure possible) to the plate webbing.    --David Nereson,
RPT, Denver
>