Turning down the plate screws to increase bearing

[David Love]

Ron:

There is a small amount of measurable crown in this area, about 1/32".  I
obviously don't want to break the plate, yet it seems like the board could
be pressed down a bit more.  The other alternative would be to take down
the tension and move the aliquots forward toward the bridge to increase the
rear bearing a bit, but that's more work (and God help us, I might detune
the duplex!).  It is very likely that the board is just weak there.  I'm
looking for a way to experiment that's not too dangerous.

David Love
davidlovepianos@earthlink.net


> [Original Message]
> From: Ron Nossaman <RNossaman@cox.net>
> To: Pianotech <pianotech@ptg.org>; <davidlovepianos@earthlink.net>
> Date: 2/4/2003 3:59:35 PM
> Subject: Re: Turning down the plate screws to increase bearing
>
>
> >I've got a S&S B that I believe may be suffering from insufficient
bearing 
> >in the capo section.  How far can I safely turn down the plates bell
bolt 
> >and plate screw in order to flex the plate downward in that area.
> >
> >
> >David Love
>
>
> How far? Just short of breaking. I wouldn't want to find out by
experience. 
> You're in the heart of killer octave country there. How's the soundboard 
> crown there?
>
> Ron N