<html> <body> 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: <blockquote type=cite class=cite cite>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 [<a href="mailto:pianotech-bounces@ptg.org" eudora="autourl">mailto:pianotech-bounces@ptg.org</a>] 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 <<a href="mailto:joegarrett@earthlink.net">joegarrett@earthlink.net</a>> To: pianotech <<a href="mailto:pianotech@ptg.org">pianotech@ptg.org</a>> 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 <pre>-- </pre> <pre>Duaine Hechler</pre> <pre>Piano, Player Piano, Organ, Pump Organ</pre> <pre>Tuning, Servicing & Rebuilding</pre> <pre>Associate Member of the Piano Technicians Guild</pre> <pre>Reed Organ Society Member</pre> <pre>St. Louis, MO 63034</pre> <pre>(314) 838-5587</pre> <pre><a href="mailto:dahechler@charter.net">dahechler@charter.net</a></pre></blockquote></body> </html>