On Apr 9, 2011, at 10:59 AM, John Delacour wrote: > At 09:22 -0400 09/04/2011, Cliff Lesher wrote: > >> I guess I'd suggest checking the bearing points before visiting Young's modulus. > > There's no need to "visit Young's Modulus". By far the most common reason for breaking strings is excessive tension and to calculate the tension of the string all you need is a common or garden pocket calculator, as you will read at the link I provided in my previous message. > <http://pianomaker.co.uk/technical/string_formulae/> > > The tension in pounds is calculated by punching in the following: > > l x f x d x = Ö 20000 = > > where l is the length in CENTIMETRES and f is the frequency in cycles per second and d is the overall diameter in CENTIMETRES. I repeat centimetres, NOT millimetres. > > It is so simple that it seems to me very silly not to do this first. > > JD Wow, Check out the size of the brain on this guy! How impressive! Thanks for the entertainment. Cliff Lesher Winfield, PA -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20110409/aa932f05/attachment.htm>
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