Dean, True, static friction is greater than dynamic friction. However, as long we're splitting hairs here, define jump. What I mean is, it is easy to imply that if the pin overcame the static friction it would then make some large movement, resulting in a large pitch change. I think arguing that it jumps vs. makes micro movements becomes an issue of semantics. Your jump can be my micro movement. What's more, this assumes that friction is constant, whatever the pins position in the hole. I'm unsure if this would be the case or not. Respectfully, William R. Monroe ----- Original Message ----- From: "Dean May" <deanmay@pianorebuilders.com> To: "'Pianotech'" <pianotech@ptg.org> Sent: Monday, March 28, 2005 8:00 AM Subject: RE: Aha! was flat facts > Static friction is greater than dynamic friction. If a tuning pin moves > it jumps, it does not turn in micro movements over time. > > Dean > Dean May cell 812.239.3359 > PianoRebuilders.com 812.235.5272 > Terre Haute IN 47802 > > > > -----Original Message----- > > From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On > > Behalf > > Of Ron Nossaman > > Sent: Sunday, March 27, 2005 11:38 AM > > To: Pianotech > > Subject: Re: was flat facts > > > > > > > >> I don't really buy into the "tuning pin turns" theory. > > > > Me either, nor the wire stretching. Music wire doesn't continue to > > stretch over time unless it's tensioned at it's yield point - then > > it stretches, necks down, and breaks. > > Ron N > > > > _______________________________________________ > > pianotech list info: https://www.moypiano.com/resources/#archives > > > > -- > > No virus found in this incoming message. > > Checked by AVG Anti-Virus. > > Version: 7.0.308 / Virus Database: 266.8.3 - Release Date: 03/25/2005 > > > > > > -- > > No virus found in this outgoing message. > > Checked by AVG Anti-Virus. > > Version: 7.0.308 / Virus Database: 266.8.3 - Release Date: 03/25/2005 > > > > > > _______________________________________________ > > pianotech list info: https://www.moypiano.com/resources/#archives > > > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > >
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