I've never had a problem with 1/3 overpull, regardless of how flat a piano may be. More specifically, on the rare occasions when a string breaks, in my experience it doesn't happen any more often during PR, even big ones! The little extra time I take to brush protek on the bearing points helps, no doubt. But I would rather do the PR in one pass, and get it close the *first* time, rather than having to go over it a second or even third time. I don't buy the argument that doing the PR in "stages", like one for every 25c of flatness, is better in any way. Terry Peterson Accurate Piano Service UniGeezer.com "Over 50, and not "2" Tired!" From: pianoboutique at comcast.net To: pianotech at ptg.org Date: Sat, 12 Dec 2009 20:49:11 -0500 Subject: Re: [pianotech] pitch raise I have tuned pianos that were a hole step flat. I don't think I would like to pull them a third that over 440. Just my feeling" I usually go about ten or 15 beats over. William ----- Original Message ----- From: pianolover 88 To: pianotech at ptg.org Sent: Saturday, December 12, 2009 7:57 PM Subject: Re: [pianotech] pitch raise Pretty basic stuff. When pianos are pitch raised, they will typically drop by about 1/3 of the overpull. So if a piano is 100 cents flat, you would want to raise pitch about 33 cents past A440, since it will drop about that much after the PR. I find that bass strings typically drop far less than rest of the piano, and so they don't require as much overpull. Terry Peterson Accurate Piano Service UniGeezer.com "Over 50, and not "2" Tired!" From: pianotune05 at hotmail.com To: pianotech at ptg.org Date: Sat, 12 Dec 2009 15:31:10 -0800 Subject: [pianotech] pitch raise Hi Everyone, When I pitch raise we were taught to just tune the piano raising the A440 slightly above a440 so that it will fall where it should go, and do a quick rough tuning but trying to make it uniform. Or if a piano was restrung I believe we pitchraised by octaves all the As following the temperament sequence . Marshall Marshall Gisondi Piano Technician Marshall's Piano Service pianotune05 at hotmail.com 215-510-9400 Graduate of The School of Piano Technology for the Blind www.pianotuningschool.org Vancouver, WA Your E-mail and More On-the-Go. Get Windows Live Hotmail Free. Sign up now. Hotmail: Powerful Free email with security by Microsoft. Get it now. _________________________________________________________________ Hotmail: Free, trusted and rich email service. http://clk.atdmt.com/GBL/go/171222984/direct/01/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091212/c898c079/attachment.htm>
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