Thanks, Ron. I can see I'll be encountering a professional growth spurt soon...... :-) Barbara Richmond ----- Original Message ----- From: "Overs Pianos" <sec@overspianos.com.au> To: "Pianotech" <pianotech@ptg.org> Sent: Friday, May 27, 2005 6:32 PM Subject: Re: String breakage in Seiler pianos Barbara, A couple of questions about the Seiler 240. Maybe next time you tune it you could check it. What is the nominal string angle of turn over the capo bar? What is the radius of the capo, and is it being deformed (grooved) by the wire. If the bars aren't being deformed at all, they are definitely being hardened. I was most impressed with the 208 Seiler at the Reno convention, as a new piano. I have heard that the tone gets ugly on these instruments unless the hammers are not regularly voiced. If you have an inspection mirror, it should be quite easy to see the bars with the action out and a light. Quite a few manufacturers are now hardening the capo bars. If the string angle over the bar is beyond about 15 degrees with hard bars, string breakage will inevitably occur. The breakage problem will be more serious if the tuning technician has poor hammer technique. String breakage in the bass is mostly related to either scale tension, or the height of the counterbearing bar, if present. It is common to see quite a severe counterbearing angle in the bass section and it really isn't necessary. Tension problems are more likely to occur in longer scaled pianos such the Bösendorfer Imperial. Breakage in the low singles of the Imperial is a known problem. They are probably chasing a bigger bass, but with a free back scale length of just 40mm on the low C of the Imperial, the board will be effectively clamped. I tuned the ABC's Imperial in jazz studio 227 just last Saturday, when the short bass-back-scale of these pianos jumped out at me. Look forward to hearing your report if possible Ron O. -- OVERS PIANOS - SYDNEY Grand Piano Manufacturers _______________________ Web http://overspianos.com.au mailto:ron@overspianos.com.au _______________________ _______________________________________________ pianotech list info: https://www.moypiano.com/resources/#archives
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