Downbearing Error

[Gregor _]

Hi Ric,
 
is ther too much downbearing after a rebuilding you made or is it original? And why do you want to change it? What happens if you don´t change anything?
 
Gregor
> Date: Mon, 19 Nov 2007 19:08:27 +0100> From: ricb at pianostemmer.no> To: pianotech at ptg.org; caut at ptg.org> Subject: Downbearing Error> > Hi folks> > Looking for advice as to how to go about correcting a downbearing > error. There is too much downbearing. The thought is to remove bridge > pins ... say five unisons at a time.... shave down the bridge top string > up again. This will necessitate plugging bridge pin holes and > redrilling as I need to come down probably 2-3 mm in places. > > The high spot of string deflection is the leading edge of the bridge. > My question is whether its best to leave the back edge at the height it > is and angle the bridge surface down more towards the leading edge... or > should I remove equally across the entire surface of the bridge ?... or > is there another way of going about this.> > I cant change anything about the plate height in this instance. I have > to accomplish this by altering the bridge. Back lengths are too long to > raise them enough by half rounds... and that would look wrong here anyways.> > Thanks for any input.> > > Cheers> RicB> > 
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