[pianotech] Diaphragmizing

PAULREVENKOJONES at aol.com PAULREVENKOJONES at aol.com
Sun Jan 25 14:19:10 PST 2009


Ron:
 
I think there is merit in your thinking here. If one reads the patents and  
discussions of this from the period, there is no real compelling evidence for  
"effect". And the number of boards that I've replaced where the plate is 
indeed  buried in the soundboard at the dowel argues further for this point of 
view. It  does indeed sound more "pragmatic" than diaphragmatic!
 
Paul
 
 
In a message dated 1/25/2009 11:32:52 A.M. Central Standard Time,  
rnossaman at cox.net writes:

erwinspiano at aol.com wrote:
>    I find most evidence of  it behind the bass bridge & around the tail 
> but also adjacent to  the very top of the treble bridge there is a 
> definite slope. The  slope does not reach out toward the bridge very far. 
> This slope, if  not there, would allow the plate to sit partially or 
> potentially on  the soundboard instead of the dowells. Looks like a 
> clearance  issue
>   Dale

I suspect you're right. It's odd though,  that they don't just 
set the plate so the string height isn't 5mm lower in  the 
treble than everywhere else, so they can make the treble 
bridge  5mm taller (and stiffer), and get the plate off of the 
soundboard in the  process. Too easy?

Ron  N



**************A Good Credit Score is 700 or Above. See yours in just 2 easy 
steps! 
(http://pr.atwola.com/promoclk/100000075x1215855013x1201028747/aol?redir=http://www.freecreditreport.com/pm/default.aspx?sc=668072%26hmpgID=62%26bcd=De
cemailfooterNO62)
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://ptg.org/pipermail/pianotech_ptg.org/attachments/20090125/9e255e12/attachment-0001.html>


More information about the pianotech mailing list

This PTG archive page provided courtesy of Moy Piano Service, LLC