Rochester: first thoughts

[Greg Newell]

At 10:37 PM 6/29/2006, you wrote:
>I was so inspired by the Rebuilders at 
>Rochester, that I took the old Hardman grand, 5' 
>something, painted white, that I had on its side 
>in my shop for over 2 years, and tore it all 
>apart.  The soundboard came out, with a little 
>persuasion and white vinegar, essentially intact.
>    I took the measurements of all the ribs, and 
> the thickness of the soundboard.  Do the 
> measurements need to be in MM's to do the 
> deflection calculations on Ron's handout? (I 
> loaned it to someone, it's not right in front of me).
>    Interesting, that the thickness is much 
> thinner at the bass end than at the treble (at 
> the edges, anyway).  Like .235 at the bass end, 
> to .335 at the treble.  13 ribs, most 
> essentially square, with a little difference 
> around ribs 3-8, all a little taller than wide.
>Ribs looked to be flat, so it's a compression crowned board, right?
>    Clark A. Sprague

Greg Newell
Greg's Piano Forté
mailto:gnewell at ameritech.net
www.gregspianoforte.com