Pramberger

[Ron Nossaman]

>Ron,
>         Mr. Pramberger gave a talk at a PTG Pittsburg chapter meeting a 
> few years ago where I asked him about the ribs and how they crown the 
> soundboard. He said, at the time, that the soundboard was rib crowned. I 
> didn't keep his attention long enough to ask what the  crown radius was 
> for any of the ribs specifically but they are crowned. Hope this helps. 
> It was a long drive to Pittsburg but ultimately worth it, I think.
>
>Greg

Hi Greg,
They're reported to be what is often talked about but seldom actually done 
- crowned with the high point under the bridge. That eliminates an arc 
segment (radius) as a meaningful measurement. Not that the radius 
measurement is particularly meaningful anyway, especially under string 
load, but you know what I mean. It's probably some sort of "bola" (hyper, 
para), or the ever popular catenary. Or maybe something they whipped up by 
eyeball in the shop. Nothing wrong with that by my standards if that's what 
they did. But I was wondering, if the sexy rib profile is a positive enough 
feature to make the cut for the advertising, why the "lively" unison bridge 
pin placement through that low treble section? That particular feature 
didn't make the brochure, somehow.


Errata:
My Eudora spell checker doesn't know "catenary". Does that put me among the 
illiterati? Doomed by a broke tool?

Go ahead guys, this one's on me.

Ron N