Overpulls was Re: Best Tuning Strategy using SAT III

[Alan Barnard]

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Dear Dino:

I also can't imagine bringing a piano from -100 to +25 but you don't have to. But if each string can't stand being up to pitch, they're going to be a problem, anyway. So ... 

For a piano that much off, I'd set a very quick temperament to 440, tune up and down quickly, then use the ETD for an over (or under) pulled tuning from A0 to C88. 

Condition of the strings, especially at the pins, the hitch loops, and the V bar/agraffs might have some bearing on my choice of procedure, but I have only rarely broken strings, even on big raises. And in those cases, aside from pianos so rusty they might have been brought up from the Titanic, it is usually a case of the elasticity being gone from the strings. If you lube the bearing points, etc., but then feel the string stiffen and stop yielding as you pull it up, you can suspect that the strings are genuinely shot and that next noodge is going to result in a resounding "twaaang." If restringing isn't in the cards, I have left a couple such pianos at 20 cents flat and tuned very gingerly.

Alan Barnard
Salem, Missouri


----- Original Message ----- 
From: David Ilvedson 
To: pmc033@earthlink.net;pianotech@ptg.org
Sent: 09/12/2005 10:00:54 AM 
Subject: Re: Best Tuning Strategy using SAT III



I'm still the dinosaur, I guess.   I don't use any over pull during pitch raises...and a string will still break on occasion.   I can't imagine bringing a piano from -100 cents to +25 cents without serious string breaking...
David I.




Original message
From: "Paul McCloud" 
To: Pianotech 
Received: 9/12/2005 7:40:51 AM
Subject: Re: Best Tuning Strategy using SAT III


I agree with Joe Goss.  I also measure A2 and divide by 4, and add the result.  I tune all the strings of the bass with this.  With the exception of the last 2 bass notes on the tenor side, everything gets extremely close.  I strip it off to do this, pulling in the unisons afterwards.  
    In the plain wires, I measure the low tenor notes and divide by 3.  I do string by string with unisons here up to the top. 
    However, I have two things I do to modify my method.  
    First, I subtract a cent from the number I get when I divide by three.  I.e., if I'm 27 cents flat, I divide by three and add 8, not 9.  If I don't do this, it gets too sharp here.
    Second, I only remeasure once in the tenor section.  If I remeasure more than this, I get too sharp when I'm done.  I just wait until I get past the break into the treble.  Then I simply divide by 3 again and leave it at that.  
    My method requires that I try to be very accurate in my first pass.  I spend much more time in the first pass than the final pass.  The final pass I strip it off and tune only the center string, bottom to top, then unisons as I pull the strip out.  
    My way, FWIW.
    Paul McCloud
    San Diego


----- Original Message ----- 
From: Joe And Penny Goss 
To: Pianotech
Sent: 09/12/2005 7:19:20 AM 
Subject: Re: Best Tuning Strategy using SAT III


Hi David,
For me also a good way to check and modify the FAC readings. Aural and machine combined.
This of course on a piano that is 10 or less off the 440.
For pitch raises I do the FAC only then measure A2. If  it measures say 50 C I enter 25 C and tune from A0 to the first plane wire strings and then go with the 25% raise rewseting at C5 
If a larger than 100C  raise is necessary it is always at least two raises then fine tune.
I am always astounded at thework that the III can do for me. Almost like having an airconditioned cab on a hot combine. 
Hammer technique I believe to be a part of the varing results that techs get.
Quick and fast is what seems to get the results that I achieve.
Joe Goss RPT
Mother Goose Tools
imatunr@srvinet.com
www.mothergoosetools.com
----- Original Message ----- 
From: David Love 
To: 'Pianotech' 
Sent: Monday, September 12, 2005 7:42 AM
Subject: RE: Best Tuning Strategy using SAT III


If I’m seeking accuracy, after the calculation, I prefer to start at A4, then tune A3 to see if that critical octave is ok.  Then tune down through the bass unisons as you go with checks that can be done with one hand, i.e., octave fifth, fourth, progressive thirds.  Modify with the DOB  on the fly if you need to.  Then tune up through the treble doing the same thing.  

David Love
davidlovepianos@comcast.net 
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On Behalf Of Robert Finley
Sent: Monday, September 12, 2005 4:24 AM
To: pianotech@ptg.org
Subject: Best Tuning Strategy using SAT III

Until now I have been performing the FAC stretch calculation/analysis using the SAT III on the piano and then began tuning chromatically from A0 upwards, tuning the single string unisons, and then the two and three string unisons as I go along, using rubber mutes. I am wondering whether it would be better to strip mute the piano, tune all the single strings, perform checks on the intervals and octaves, and then go back and tune all the unisons.  

What would you advise that would produce the best, most accurate and fastest result? Thank you for your help. 

Robert Finley
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