Turning down the plate screws to increase bearing

[Ron Nossaman]

>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.

Amazing, a B with crown in the killer octave! It might be worth a try. 
What's the front and rear bearing reading as it is now?


>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!).

Horrors! To avoid de-octivating the duplex (and further shortening the back 
scale), you could grind some off the bottom of the bar and leave it where 
it is, if you decide to go to the trouble of letting tension down anyway.


>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

You could also take all tension off of the bell bolt and see how much the 
plate rises - just to see how much it's already deflected, and what happens 
to the bearing and tone when it's not.

Ron N