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/20070418/099ae1bd/attachment-0001.html
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