Soundboard Installation & MC

[Erwinspiano@AOL.COM]

---------------------- multipart/alternative attachment
In a message dated 4/24/2002 8:19:45 AM Pacific Standard Time, 
pianobuilders@olynet.com writes:


> Installation & MC 
> Date:4/24/2002 8:19:45 AM Pacific Standard Time
> From:<A HREF="mailto:pianobuilders@olynet.com">pianobuilders@olynet.com</A>
> 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 
> 
>    Del ,Ron
> 
> 
>   Del Wrote
> You are referring to an effect you notice at the point of initially gluing 
> the soundboard assembly to the rim. Certainly the soundboard assembly is 
> stiffening up. You are changing it from a free-floating panel to a 
> clamped-edge panel. Apples and pomegranates in the context of this 
> discussion. 
Del& Ron
>>>>>And this really was my main point that it does  stiffens up considerably 
which is certainly some part of the dynamic equation for its ablity to 
produce tone.
 Perhaps not stated very well but in our ongoing discussions about the rims 
and board function this one little piece of the pie seems to be ignored or at 
least not considered as important. 
    No it isn't germain to the tension resonator argument and I wasn't 
supporting it although that's where the discussion  started. I was merely 
making the point that this stiffening from gluing the panel to the rim is 
important. Although I'm calling it a supporting agent I don't /didn't imply 
that this is how the crown in the board was derived in the first place nor 
will it keep it from going away over time. Perhaps I was unclear.

I (and, presumably, M&H) am referring to an effect expected to last through 
the 
> ages. 

  >>>>>I know And I don't subscribe to that either
    I would respectfully suggest that you read up on the phenomena of wood 
creep. 
> Look specifically at wood deformation under load over extended periods of 
> time          .Del

>>>>>Thank you. Your respect is well recieved. 
   I am keenly aware of  wood creep and compression set especially when it 
comes to board longevity. I too see it in almost every old board I remove. 
     On a different note since some of the old compression crowned boards 
survived for longer than they should have based on our experience with them 
it will be disappointing not to be around to see just how long the modern 
variety rib crowned board will survive tonally by comparison.
>>>>>>>>>Dale Erwin>>>..

>  
> 
> 
> >> ----- 
>> 
> 


---------------------- multipart/alternative attachment
An HTML attachment was scrubbed...
URL: https://www.moypiano.com/ptg/pianotech.php/attachments/24/0e/9a/88/attachment.htm

---------------------- multipart/alternative attachment--