Bass Bridge Downbearing/Sidebearing

[Farrell]

Thanks Ron. Just trying to make sure I was not missing something. Thanks for
your thoughts.

Terry Farrell
Piano Tuning & Service
Tampa, Florida
mfarrel2@tampabay.rr.com

----- Original Message -----
From: "Ron Nossaman" <RNossaman@KSCABLE.com>
To: <pianotech@ptg.org>
Sent: Tuesday, November 28, 2000 9:19 PM
Subject: Re: Bass Bridge Downbearing/Sidebearing


> >A while back I posted about a bass bridge that had cracked along the
> >speaking side bridge pin line - the kind where a continuous line of wood
is
> >destroyed and the bridge pins have all migrated so that there is no bend
in
> >the string at the pin. It was suggested that a likely cause was no
> >downbearing on the bass bridge. I questions that.
>
> Mechanically, negative bearing will put more side force on bridge pins,
but
> that's not why it split. It split because the grain line was straight
along
> the line of pins, and the continuity of the long grain was broken every
6mm
> or so by a hole for the bridge pin. Ever see this happen on one of those
> severely reverse curved banana like bass bridges?
>
>
> >My information on target downbearing for the bass bridge is "just a tad".
> >Some respected convention lecturers suggest to have the string "just
kiss"
> >the bass bridge top. I do not think such downbearing targets will cause
> >undue or increased stress on bass bridge pins.
> >
> >Any thoughts on this?
> >
> >Terry Farrell
>
> I don't see any reason it would, or evidence that it has.
>
> Ron N
>