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. http://clk.atdmt.com/GBL/go/171222986/direct/01/ -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091212/96df5cae/attachment-0001.htm>
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