<!doctype html public "-//W3C//DTD W3 HTML//EN">
<html><head><style type="text/css"><!--
blockquote, dl, ul, ol, li { padding-top: 0 ; padding-bottom: 0 }
--></style><title>Re: Soundboard Deflection and Pitch Change / was
Downbeari</title></head><body>
<div>At 8:23 am +0200 18/8/06, Ric Brekne wrote:</div>
<div><br></div>
<blockquote type="cite" cite>Is this standard practice for most
rebuilders ?</blockquote>
<div><br></div>
<div>I doubt it very much, but look at the practice of a few good
makers from the good old days; see whether the indentation is greater
at the front or the back.</div>
<div><br></div>
<blockquote type="cite" cite> I would placing all the downwards
force on one or the other edge of the bridge would be asking for
problems.. i.e. bridge rolling etc. What is the benefit to doing
it this way ?</blockquote>
<div><br></div>
<div>The pressure is practically vertical and not "on the edge"
of the bridge. If you calculate the forces you will see how much
likelihood there is of the bridge "rolling", even supposing
that some wonder-tuner has perfectly equalized the tension on every
string each side of the bridge. The more the pressure is moved
to the point where the speaking length terminates, the better the
string is united with the bridge and the more likely to stay united
under the effect of upward shocks. The quality of the string's
terminations at both bridges is extremely important. To the left
of the arrow the string receives no upward shocks.</div>
<div><br></div>
<div>JD</div>
<div><img src="cid:p06240603c10b158ad120@[10.0.0.1].1.0"></div>
<blockquote type="cite" cite>At 8:36 pm +0200 16/8/06, Ric Brekne
wrote:<br>
<br>
>How do you go about equalizing the downward force the string
places<br>
>on the bridges front and back edges ? Or do you do this at all
?<br>
<br>
JD resoponds<br>
</blockquote>
<blockquote type="cite" cite>Why would you want to? Ideally, in
my view, the top of the bridge</blockquote>
<blockquote type="cite" cite>should be parallel, when the piano is up
to pitch and well settled,<br>
with the length of string beyond the bridge so that the only angle
in<br>
the string is where the speaking length begins, at the front pin.<br>
That is to say that the downward pressure at this point is
the</blockquote>
<blockquote type="cite" cite>greatest.</blockquote>
<blockquote type="cite" cite><br>
JD</blockquote>
<div><br></div>
<div><br></div>
</body>
</html>