Not sure if I made myself clear on that last bit, "What's more, this assumes that friction is constant, whatever the pins position in the hole." What I mean is, if static friction has been overcome and the pin started to move, is it not possible that after the tiniest movement, the pin encounters a structural "something" in the block which results in an increase in friction in that position, stopping the pin's movement? Respectfully, William R. Monroe ----- Original Message ----- From: "William R. Monroe" <pianotech@a440piano.net> To: "Pianotech" <pianotech@ptg.org> Sent: Monday, March 28, 2005 8:13 AM Subject: Re: Aha! was flat facts > 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 > > > > > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > >
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