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 >
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