Hi Ron, Do you know if tuning pins flagpole due to changing humidity levels? Anyone else care to comment? At 04:53 PM 7/12/2003 -0500, you wrote: > >> I don't think the pin moves at all, there is not that much force >>available. > >And even if it did, the effect is still real, and the numbers are scary - >if I did it right. A 400mm speaking length of #17 wire tuned at 440cps is >at about 168.5 lbs of tension. Add 0.03mm (0.0011") to that speaking length >and the tension drops over 2.5 lbs, dropping pitch to 437. > >It doesn't take much movement to make a big difference, and that's not >strings stretching over time. > >Ron N > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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