Why do we need crown?

[Joe And Penny Goss]

Hi Ed,
Does it still have the tapered pins also?
Joe Goss RPT
Mother Goose Tools
imatunr at srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: <A440A at aol.com>
To: <pianotech at ptg.org>
Sent: Sunday, April 23, 2006 8:52 PM
Subject: Re: Why do we need crown?


> Ron writes:
>
> << And I was, of course, talking about something designed and
>
> built for zero bearing and zero crown throughout, not
>
> something that was designed for positive bearing and crown and
>
> badly built. >>
>
>   Greetings,
>      My parents' piano is a 1870 Hallet & Davis. It is not veneered, but
> rather made with solid maple body parts.  The soundboard is completely
flat,and
> was designed that way. The bridge has agraffes that have steeply slanted
holes
> in them, and they alternate so that the back strings are either rising
from
> them to meet the hitch pins, or slanting just as steeply down to the
hitch.  The
> effect of the alternating bearing is to rigidly lock the board in place.
This
> piano has a boomy bass and a weak treble.
>      I tried all sorts of things, but there was no way to get an even
> response out of this board.  I have some rather serious misgivings about
flat
> soundboards.
> Regards,
>
> Ed Foote RPT
> http://www.uk-piano.org/edfoote/index.html
> www.uk-piano.org/edfoote/well_tempered_piano.html
>