Wierd Pitch Raise Results

[pianolover 88]

When pitch raising a piano that's "all over the road", and i also use an 
SAT, I measure and calculate a NEW pitch raise offset on almost every third 
note or so. This way the second fine tuning pass is alsmost guaranteed to be 
uniformly close top to bottom. Doesn't really take that much longer to do 
the extra SAT calculations, but really makes it much more accurate the 
second time around. Also, I used to do the 1/3 overpull for ALL plain wire; 
that would usually leave the tenor section too sharp, so now i use 1/4 
overpull in the tenor, and then 1/3 from about F5 on up. If the piano is 
grossly flat, 1/4 may not be sufficient, but in the scenario you outlined, 
1/4 should be more than enough.

Terry


>From: "Farrell" <mfarrel2@tampabay.rr.com>
>Reply-To: pianotech@ptg.org
>To: <pianotech@ptg.org>
>Subject: Wierd Pitch Raise Results
>Date: Thu, 7 Feb 2002 23:50:14 -0500
>
>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
>
>


_________________________________________________________________
Send and receive Hotmail on your mobile device: http://mobile.msn.com