How would you go about pitch-raising a piano that is anywhere from 10 cents to 70 cents flat, but mostly around 30 cents? I pitch-raised my Ricca the other day by overpulling some, going all through the piano (and breaking C#1 (again) in the process) THEN roughing in the unisons. I then re-stripped the piano, and tuned it the normal way. The pins are somewhat loose, btw. Next time I need to tune it (most likely will be 10 cents flat in a few weeks cause that's usually where it is when I go to tune it after that interval of time), how would you recommend doing it? I don't have an accutuner or a fork. My dad has a $15 Korg chromatic tuner, accurate to within 2.5 cents, and I made myself a CD with A-440 and temperament octave tones (but without any inharmonicity factoring in). --- Patrick C Poulson <pcpoulso@pacbell.net> wrote: > 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 > > > > > > > __________________________________________________ Do You Yahoo!? Send FREE Valentine eCards with Yahoo! Greetings! http://greetings.yahoo.com
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