Marcel asked: "I'm in a bind with a Gaebler piano that I took in for repair (pinblock strings etc.). When I run the numbers with my excel file, I get extremely high tension in the treble section and I'm worried about the breaking % that gets above 79%. Is that still workable. At this point I'm just scared and I didn't quote to do a bridge recap... Am I scared for nothing or could this beast implode on me?" Marcel, Expain "implode". Probably damage will occur, but 'implode'?? The rule of thumb I was taught was: don't exceed 60% breaking strength! Definately sounds like a new bridge cap, (i.e. rescale of speaking lengths), is in order. However, what formulae are you using for your "excel file"?? Regards, Joe Joe Garrett, R.P.T. (Oregon) Captain, Tool Police Squares R I -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091111/a6aa485c/attachment.htm>
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