Pitch Raising Techniques

[Andrew & Rebeca Anderson]

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I was wondering about that one pass large pitch raise.  I use a VT to help 
with pitch raises and I find that you do have to reduce the overpull for 
small pianos.  I also find that the arbitrary break from one overpull for 
wound strings and another for tenor and another for the treble leaves the 
low tenor flat and the low treble sharp.  I've varied where I break but I 
find that hit and miss at best.  I just plan on a second pass.

Andrew A.
At 12:23 PM 12/1/2004 -0800, you wrote:

>The Cybertuner does have the best pitch raise function, in my 
>opinion.  The VT is next best and the SATIII is functional but must be 
>recalcd every so many notes.  The Cybertuner calculates the overpull based 
>on a trailing average of 5 notes, I believe.  Each section does vary in 
>terms of % overpull and I would be curious to know what the default 
>settings are.  If the goal is to end up at A440 within a reasonable number 
>of passes (like 2), overpull is necessary.
>
>
>
>David Love
>davidlovepianos@comcast.net
>
>-----Original Message-----
>From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On 
>Behalf Of Hechler Family
>Sent: Wednesday, December 01, 2004 9:32 AM
>To: ilvey@sbcglobal.net; Pianotech
>Subject: Re: Pitch Raising Techniques
>
>
>
>David,
>
>That even sounds more archaic O:-)
>
>I just let Cybertuner do the "thinking" (overpull calculation) and can 
>tune 99.99% of the time in one pass to A440 :-)
>
>Duaine
>
>David Ilvedson wrote:
>
>Speaking of archaic, I typically don't overpull at all.   1/2 step 
>flat?   Up to pitch.  2nd pass up to pitch and 3rd pass in the tenor and 
>leave where it lies.
>
>
>
>David I.
>
>
>
>----- Original message ---------------------------------------->
>From: Joe Garrett <<mailto:joegarrett@earthlink.net>joegarrett@earthlink.net>
>To: pianotech <<mailto:pianotech@ptg.org>pianotech@ptg.org>
>Received: Wed, 1 Dec 2004 07:48:11 -0800
>Subject: Re: Pitch Raising Techniques
>
>
>David Love said: "15% overpull in the bass, 25% in the midrange, 32% in 
>the upper range.
>On small spinets, reduce the numbers by 5% each.   Do unisons as you go."
>
>
>David,
>
>I must take exception to this technique! Although, it will work most of 
>the time on most Olde Uprights and Grands, there is always the exception. 
>This technique is archaic, to say the least. There are better ways. The 
>32% in the upper treble will most likely get someone in a world of hurt! 
>Most strings, in that area, are already at/above 50% of their breaking 
>strength!!! You raise it another 32% and strings will break, IMO. I've 
>done some studying on the subject and wrote an article for the PTJ, in 
>Dec. 1999.
>
>Regards,
>
>Joe Garrett, R.P.T.
>Captain, Tool Police
>Squares R I
>
>
>
>
>--
>Duaine Hechler
>Piano, Player Piano, Organ, Pump Organ
>Tuning, Servicing & Rebuilding
>Associate Member of the Piano Technicians Guild
>Reed Organ Society Member
>St. Louis, MO 63034
>(314) 838-5587
><mailto:dahechler@charter.net>dahechler@charter.net

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