At 12:02 -0700 08/04/2011, Wally Scherer wrote: >The F# that broke has a core diameter of .049" and an outside >(single wrapped) diameter of .165". > >The F below it has a core diameter of .050 and od of .173. > >The G above it has a core diameter of .049 and od of .146. > >So, the measurements seem like a suitable progression. > >I am guessing that when it was replaced before, the same >measurements were kept, which may have resulted in too high a >tension for that string, hence its breaking in the first place. That is often the case, but you need to calculate whether it is or not. >Maybe I should order one with the same core diameter, and an od of >around .160". > >Any other opinions? For a gauge 22 core to enter the danger area requires a tension of about 325 lbs, which is pretty high. To get that tension your F# would need to be 125 cm long. How long is the speaking length? You can calculate the tension here: <http://pianomaker.co.uk/technical/string_formulae/> JD
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