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 > > > > > > >
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