Crowned Ribs on M&H?

[Erwinspiano@aol.com]

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In a message dated 9/9/2003 3:09:53 PM Pacific Daylight Time, 
[link redacted at request of site owner - Jul 25, 2015]

> Subj: Crowned Ribs on M&H? 
>  Date: 9/9/2003 3:09:53 PM Pacific Daylight Time
[link redacted at request of site owner - Jul 25, 2015]
>  Reply-to: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
>  To: <A HREF="mailto:pianotech@ptg.org">pianotech@ptg.org</A>
>  Sent from the Internet 
> 
>          Hi John
          I was at Mason & Hamlin 3 years ago and recieved a tour from Kirk 
Burgett. I won't swear to it but I believe he spoke about the ribs having 
several different radii. I saw the same racks but didn't stop to look specifically 
at the ribs or the crown alleged. I haven't torn down any Mason yet with 
crowned ribs either but then again it seems I'm the only one who has seen a half 
dozen reverse crown executions in various makes. Odd thing are out so there 
maybe Del stumbled on the only two crowned rib experiments these companys ever 
produced.
    Dale

> 
> Delwin D Fandrich wrote:
> 
> >P.S. You mention in defense of the compression-crowned soundboard that you
> >"maintain literally dozens of elder Steinways and Mason &Hamlins, most
> >with original boards, some 100 or more years old..." and go on to extol
> >their acoustic virtues. You are aware, I trust, that M&H has long used
> >crowned ribs. That's not the same thing.  -- ddf
> 
> 
> Del,
> 
> Not to give you a hard time but the last time I was at the M&H plant a 
> few years ago the ribs I saw were certainly flat not crowned. They have 
> a large rack with rows of rib stock machined and ready to be glued to 
> there boards. There bottom surfaces were nicely profiled in the usual 
> manner. If there was any crown to these it wasn't deliberate. Also I 
> have not noticed any more evidence of crowned ribs on older M&Hs than I 
> do on older S&Ss. When you remove a old M&H board from the case it look 
> pretty much like an old Steinway Board. Flat as a pancake. I am not sure 
> if machined crowned ribs of the usual dimensions would show much sign of 
> there heritage after many years. At least I have never come across ribs 
> that were obviously crowned on these two makes.
> 
> 
> -- 
> John Hartman RPT
> 
> John Hartman Pianos
[link redacted at request of site owner - Jul 25, 2015]
> Rebuilding Steinway and Mason &Hamlin
> Grand Pianos Since 1979
> 


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