---------------------- multipart/mixed attachment Hi Ron, Here are a couple of photos of the offending pin taken from 180 degrees apart. Not sure they are small enough to come directly through. At 03:46 PM 4/29/2005 -0500, you wrote: > >>Or just cutting the notch a bit farther back. There's no performance > > > > reason I > > > >>can see that the notch edge has to exactly bisect the pin. > > > >> Is this just another old wives tale then? I was under the impression that >> this would lead to a different vertical and horizontal termination--which >> would cause the string to ring at 2 discreet frequencies at the same time. >> I know of at least one 9 foot where this *is* the case in a low bass string >> that is poorly notched. Perhaps what I am hearing is nothing to do with the >> notch? > >That's what I was told too, from when I started back when, to the >present day. The problem is, that just doesn't hold up to even >casual inspection. Go look at new pianos in the exhibition hall at >the convention this year. You'll see some that have notches cut back >so far the bridge pin in entirely in the notch cut - but the strings >aren't wild. That doesn't fit the explanation. Why? The notch looks >exactly right, but the false beat is still there. That doesn't fit >the explanation. Why? Now you find wild strings in the field, and >stop the false beat temporarily by back bracing the pin with a >screwdriver. The relationship between the notch and the pin didn't >change, but the beat stopped. That doesn't fit the explanation. Why? >Now you try to move a string up a bridge pin and discover how >difficult it is to do that. To get the false beat by the old >explanation, the string would have to slither up and down the string >easily. It doesn't. That doesn't fit the explanation. Why? Seating a >string sometimes clears up a false beat temporarily. Seating the >string didn't change the relationship between the notch and the pin, >so why did the beat stop? That doesn't fit the old explanation. Why? >Now go back and read the 43,000 words written on the "why" in the >last week or so (with plenty more of the same for some years back), >and take another look at that early explanation of false beats. Then >ask yourself ... why? > >I doubt if what you're hearing in that string has much of anything >to do with the notch. Without seeing and hearing it, I'd be more >inclined to suspect a longitudinal first. What have you tried in the >way of diagnostics? > >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: 266.11.0 - Release Date: 4/29/2005 > > ---------------------- multipart/mixed attachment A non-text attachment was scrubbed... Name: bridgepin1.jpg Type: image/jpeg Size: 37693 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/7b/d3/d2/28/bridgepin1.jpg ---------------------- multipart/mixed attachment A non-text attachment was scrubbed... Name: bridgepin2.jpg Type: image/jpeg Size: 28725 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/80/ee/c6/87/bridgepin2.jpg ---------------------- multipart/mixed attachment Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T. Non calor sed umor est qui nobis incommodat mailto:pianotuna@yahoo.com http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK, S4S 5G7 306-352-3620 or 1-888-29t-uner ---------------------- multipart/mixed attachment--
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