Hi Sid, I don't think the plate moves *much* but I do think the wood may do so. If you check A4 with a vtd just after a pitch correction--and then check again in 5 minutes, and then again in 1/2 you will get different pitch level. The pitch will not necessarily be lower. At 05:37 PM 08/18/2001 -0400, you wrote: >.....Even if the pitch change with all the other string >> lengths factored in was ten times the figure of just the speaking length, >it >> still wouldn't be enough by far to account for the pitch drops we >regularly see >> during pitch raises. The plate foreshortens along the string plane as >tension >> is added, and a little plate flex makes a lot more difference in string >pitch >> than a little soundboard deflection. Really, it does. >> >> >> Ron N > >This makes me wonder about the nature of castings; how long does the plate >continue to flex after a major pitch raise ? > >Sid Blum >sid@sover.net > > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Saskatchewan Centre of the Arts mailto:drose@dlcwest.com http://donrose.xoasis.com/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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