Thanks, Joe. Common cents don't keep up with inflation these days. Yes, I've got lotsa response. Carl Meyer PTG assoc Santa Clara, Ca. ----- Original Message ----- From: "Joe And Penny Goss" <imatunr@srvinet.com> To: "Pianotech" <pianotech@ptg.org> Sent: Saturday, August 13, 2005 5:41 PM Subject: Re: string termination > Well Carl, > If you wants common cents <G> > When I's plucks my bass pulling the string in a up motion on my bass I > gets > a ping sound. If it is pulled to the side, more of a deep full bassey > sound. > But that is probibly not the kind of answer you are after. Also the same > kind of results of a sort if the string is excited near the bridge, a thin > sound. And away from the bridge a deeper fuller sound. Your search may > raise > more questions for you. > Hope you can find your answer. > Joe Goss RPT > Mother Goose Tools > imatunr@srvinet.com > www.mothergoosetools.com > ----- Original Message ----- > From: "Carl Meyer" <cmpiano@comcast.net> > To: <pianotech@ptg.org> > Sent: Saturday, August 13, 2005 6:12 PM > Subject: string termination > > >> A lot of things about string terminations have bugged me for some time. >> >> Ron Overs (who I respect) promotes hardening of the capo bar, yet the >> agraffe is a relatively soft material (brass). The difference is that >> the >> capo is straight and the agraffe is round. Wouldn't the agraffe last > longer >> if it were heavily plated with chrome, nickel or?? Oh I forgot, piano > techs >> love brass, felt and wood. >> >> Now under normal circumstances, the piano string is terminated (pivoted) > on >> the top surface of the agraffe. Let's call that North. Let's call the >> bottom of the agraffe South. The other two surfaces would be called east >> and west. >> >> At the bridge, the string is terminated at maybe SSE (south south east). >> >> Wapin claims that their vertical bridge pin encourages the string to > vibrate >> in the horizontal direction quicker before the energy has been dissipated > in >> the vertical mode and hence -longer sustain. >> >> Let's make it a given that the impact of the hammer is in a northern >> direction. >> >> Stuart of Australia claims that their bridge termination increases the >> vertical vibration of the string. Hmmmm? How does that effect the >> sustain???? >> >> My esteemed colleuge from one of the fly over states suggests that a > string >> starts out vibrating vertically, slowly starts to drift horizontally but >> never gets to true horizontal. He also suggests that a string tends to >> vibrate at 90 degrees of its termination. I want to find out if that is >> true. >> >> I don't really know, but it has been my assumption (maybe in error) that > the >> string vibrated vertically, slowly drifts elliptically, approaches >> horizontal, then elliptically in the other direction and then returns to >> vertical at a much lower level. This would then be a cyclical >> phenomenon. >> Sorry for the flurry of five dollar words. >> >> I've been thinking of a new bridge termination scheme for rebuilding but >> I'm not going to proceed till I answer a basic question. >> >> Here's my question: A vibrating string has two terminations. It is > excited >> in the northern direction. (Ignore the strike point) What effect on >> tone >> will be the termination of the two ends of the string????? Both north, >> one >> north and the other south, east or west???? Or no big difference?? >> >> I have recently found plans on the net to build an led stroboscope. I > will >> build this and look at a string under vibration. I could stretch a wire >> across my garage and look at it with different terminations. >> >> If some of you deep thinkers have an answer to my question that makes > common >> sense, I won't have to do this. Give me your feedback. Thanks >> >> >> >> >> _______________________________________________ >> pianotech list info: https://www.moypiano.com/resources/#archives > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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