Oh! Wim, if you do tune/work the back scale--not just straighten and tap--while stringing, my apologies for the wording that looks as if i assumed you didn't do this. It was a temporary assumption. I think they call that a postulate before the theory. I'll find out when I finish my engineering degree. Keith Roberts On 4/18/07, Keith Roberts <keithspiano at gmail.com> wrote: > > Now this is why I think Wim was having probs with a newlyrestrungD. If you > don't tune the back scale or make sure the strings render when stringing > then as Ron just said the string render at random times. Maybe a year or two > or three later. > > On another list about backscale tuning, I remarked that I just try to > smooth out the sound and tension of the back scale and asked whether it > would be better to raise the raise the pitch of the backscale or lower it in > comparison to the front scale. I got no answers. From what Ron says here, I > think taking the hammer shank and making sure the backscale pulled up to > tension+ in the stringing process is essential. Then as the wire stretches, > the backscale won't render through after tunings. Since the rendering does > this randomly with humidity swings and applying the principle of "going > halfway there never gets you there" even if you are already halfway there, > logically it must mean the tuning stability sucks. > > Keith Roberts > > > On 4/17/07, Ron Nossaman <rnossaman at cox.net> wrote: > > > > > > Hi Fred, > > Consider that if the string can be moved up and down the pin > > by cap dimensional changes, the friction between string and > > pin is overcome in small increments to allow it. As the string > > moves up or down the pin, the differing segment tensions will > > take advantage of the momentary friction respite, and the > > string will also render across the bridge somewhat. This > > happens at odd intervals as long as the cap thickness is > > changing, which is most of the time. Nothing ever stands still > > as long as there are changes in temperature and humidity, so > > nothing ever quite reaches equilibrium. > > > > Ron N > > > > -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/caut.php/attachments/20070418/6e136ad2/attachment.html
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