I know Ron Nossaman took a lot of heat about wire stretching, so I would like to give an unscientific, but real world account of a piano I tuned yesterday. The piano is a Petrof model IV 5'8" which was purchased new. I first tuned it on Sep. 2005 at 441. the temp was 71º F and humidity was 46%. The next tuning was in May 2006. I tuned it at 440, the temp. was 70º F and humidity was humidity was 37% My customer said he hadn't called after he received my first card (1 year) because he didn't think the piano needed tuning. I tuned it yesterday May 2008 and this is what I found. A4 was at 439.79. I tuned it at 440, the temp was 72º F and the humidity was 40%. The piano's pitch deviation was from -6 cents to +4 cents. I couldn't believe it! I'd say there is not too much wire stretching going on here! Al Guecia -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20080509/27d00770/attachment.html
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