Case separation or delamination question

[Farrell]

Yes, the new soundboard does redirect interest at bit. I see your point.

> I haven't the means to simply flip this 8' sucker over. (Good thing it's 
> only 85 notes)  Even if it hadn't just been rebuilt, I would want to know 
> that it was likely necessary before I undertook the expense.
 
Do you have a chain fall? You can do it pretty easy with that.

> >Fully evaluate crown and downbearing over the entire soundboard to better 
> >understand your soundboard's condition.

> Terry, I'm just curious.  How would you go about measuring the downbearing?

I use a Lowel downbearing guage. With it you can measure the orientation of the string speaking length, the orientation of the string as it crosses the bridge, and the orientation of the backscale portion of the string. This gives you a very clear picture of downbearing at any given location along the bridge. Your downbearing along with careful crown measurements should be able to tell you quite a story about how the board and strings inter-relate.

Terry Farrell
  
----- Original Message ----- 
From: "David Skolnik" <skolnik@attglobal.net>
To: <pianotech@ptg.org>
Sent: Saturday, March 30, 2002 12:07 PM
Subject: Re: Case separation or delamination question


> Hi Terry -
> At 08:52 AM 03/30/2002 -0500, you wrote:
> 
> >This is a long post about rim delamination.
> 
> Actually, it only seems long, most likely because I used the shorter line 
> width that people seem to prefer, and because I use too many commas. I also 
> try to save space by not using smiley faces, but I think them a lot.  Also 
> my apology took up a few lines.
> 
> >  If I understand you correctly, you are concerned that the rim 
> > delamination is causing the tonal deficiencies.
> 
> That WAS the point of my original question. By the time of the post to 
> which you responded I was trying to confirm and clarify my understanding of 
> what Del had said, which, overall, left me feeling that this might not be 
> as big an issue as I had first thought.  I offered as little information as 
> I thought was necessary to focus on that question, but, judging from a few 
> of your subsequent comments, that may not have been adequate.
> 
> >I'm no rim professional, but I suspect all you need to do with this rim is 
> >to flip the piano over and fill the little rascal gap with West System epoxy.
> 
> I haven't the means to simply flip this 8' sucker over. (Good thing it's 
> only 85 notes)  Even if it hadn't just been rebuilt, I would want to know 
> that it was likely necessary before I undertook the expense.
> 
> >Ok, so now you have the rim taken care of. Time to consider the cause of 
> >the tonal deficiencies. You have a flat board with a dead treble. You 
> >mention the piano was rebuilt. New soundboard? Yes Who made the 
> >soundboard? Not relevant, other than to say it was done by experienced 
> >rebuilder        Original 119 year old Steinway soundboard? Yikes! If that 
> >is the case, I would consider focusing on the need for a new soundboard. 
> >(This kinda sounds like the situation to me!)  No
> 
> The question for me was whether there was any reason to suspect that the 
> delamination would likely have contributed to the apparent lack of crown in 
> a newly installed board.
> 
> >Fully evaluate crown and downbearing over the entire soundboard to better 
> >understand your soundboard's condition.
> Terry, I'm just curious.  How would you go about measuring the downbearing?
> 
> (:-!) See, I can't seem to get a good smiley (;-(
> 
> David Skolnik
> 
> 
> SNIP