Pitch Raising Techniques

[David Love]

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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 recalc'd
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 <joegarrett@earthlink.net>
To: pianotech <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
dahechler@charter.net

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