Strange bridge in a Steinway

[Michael Spalding]

Something to consider, on the " do they do any harm" side:  A freshly
rebuilt Yamaha concert grand had an intermittent buzz in the bass.  It was 
eventually tracked down to a couple globs of varnish "bridging" between the
soundboard and the bridge in one of those hollowed out sections.  Those
shallow tunnels under a bridge are just one more place for garbage to
collect and work invisible mischief.

Mike


> [Original Message]
> From: David Love <davidlovepianos@earthlink.net>
> To: Pianotech <pianotech@ptg.org>
> Date: 7/12/2003 12:30:12 PM
> Subject: Re: Strange bridge in a Steinway
>
> There seem to be a few theories about these gaps which appear on various
> models and not on others.  I've often wondered whether the theories hold
up
> in practice.  I've heard some mention that when reusing the old bridge on
a
> new board that they fill these areas.  In light of a discussion awhile ago
> about the bridge's contribution in general to the stiffness of the board,
> it would seem that these gaps are of little consequence.  If they don't
> have any real benefit, do they do any harm?  That is, do they effect the
> function of the bridge or board in any negative way possibly.  As Roger J.
> mentioned, I like the model O as well.  The questions for me are: what in
> that model is really contributing to the specific performance of that
> piano, what might be inhibiting better performance, and what really
doesn't
> make any real difference?
>
> David Love
> davidlovepianos@earthlink.net
>
>
> > [Original Message]
> > From: Ron Nossaman <RNossaman@cox.net>
> > To: Pianotech <pianotech@ptg.org>
> > Date: 7/12/2003 9:21:14 AM
> > Subject: Re: Strange bridge in a Steinway
> >
> >
> > >Now, why would this arrangemt be used and why only for the last part of
> the
> > >bridge?
> >
> > Tunnel of sound?
> >
> > Supposedly to make the soundboard more flexible there, but I question
> it's 
> > value. When I get to do a redesign, I eliminate this "feature", among
> others.
> >
> > Ron N
> >
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