Soundboard crown

[Ron Nossaman]

>Once again, I am not talking about rebuilding, I am talking about new
>boards.

You didn't say that.


>A rib-crowned board, if I understand things right, should be not that much
>different in terms of stiffness from a flat board with flat ribs that ave
>the same strength.

I don't know specifically how it would differ in the deflection range and 
response at full deflection, but I expect it would differ. I haven't tried it.


>A crowned rib is not working like an arch in architecture - it works like a
>beam supporting a vertical load, at least that seems to be what people say
>around here. So wether you make it crowned or not, this should be relatively
>unimportant.

Could be.


> > Everyone has heard of these pianos. Most of them are owned by the guy who
> > bought the new Corvette for $100 because someone died in it. How many have
> > you actually heard for yourself, and what was the condition of the other
> > dozens, if not hundreds of factors involved in this assessment?
>
>Let's forget them.

You brought them up, not me.


>But can't that stiffness be provided by a perfectly straight (flat) set of
>ribs and a flat board?

Quite possibly.

Ron N