Wierd Pitch Raise Results

[Farrell]

Thank you. That's an interesting thought. I'll have to pay closer attention to laminated boards. Yes, this one had a hunk of plywood down there.

Terry Farrell
  
----- Original Message ----- 
From: "Patrick C Poulson" <pcpoulso@pacbell.net>
To: <pianotech@ptg.org>
Sent: Friday, February 08, 2002 12:29 AM
Subject: Re: Wierd Pitch Raise Results


> Terry: Check to see if the piano has a laminated sound board. In my
> experience a piano with a laminated board needs significantly less over
> pull.  I assume that this is because the board itself is stiffer due to the
> cross grain and layers of glue, and doesn't flex as much as a solid board.
> I also use a SAT, but in these cases I modify my pitch raise technique.  In
> the middle section, rather than tuning the unisons as I go, I mute off the
> strings, pull just the center strings up to pitch up throughout the tenor
> section, and then go back and pull in the unisons.  The upper treble and
> bass I tune as usually. This usually brings the pitch raise in as close as I
> typically get normally.  I also use this procedure on spinets and it works
> well on them too.
>     I hope this helps. Patrick Poulson, RPT
> ----- Original Message -----
> From: "Farrell" <mfarrel2@tampabay.rr.com>
> To: <pianotech@ptg.org>
> Sent: Thursday, February 07, 2002 8:50 PM
> Subject: Wierd Pitch Raise Results
> 
> 
> > Half the piano I tune require a significant pitch raise. I do a lot of
> pitch raises. I use a SAT III. Almost all my pitch raises come out really
> close to target.
> >
> > BUT. Some don't. Today I pitch raised three pianos. An Aeolian spinet
> (what junk!) was raised 30 cents - came out real close to target. A German
> F. Weber old upright - raised 80 cents and came out right on target.
> Yesterday I did 60-cent pitch raises on six P22s (and tuned them - new
> tuning output record for me! - also a new one-day income record for me! :-)
> !!) - all came out right where I wanted them.
> >
> > I also pitch raised a 1973 Kimball console today. The piano was all over
> the place tuning-wise, but was only about 5 to 10 cents flat on average. I
> made the small pitch offset correction as usual with the SAT, and after the
> pitch raise pass, the ugly son-&%-$-$#%&@ was a good 15 to 20 cents sharp.
> WHY? I went through it again without any pitch correction (the piano should
> have ended up perhaps 5 cents sharp) and every thing was like at least 10
> cents sharp!
> >
> > Is this like some loosey goosey piano or what? Was I having an acid
> flashback? I takes a lot to get me riled up while working on a piano, but
> this one pushed me close to the limit.
> >
> > Ever see anything like this, or is it more likely that I was just tired
> and screwing up big time?
> >
> > Thanks.
> >
> > Terry Farrell
> >
> >
> >
>