<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; = charset=US-ASCII"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> I'm not sure what your first sentence means but a loose pin = might not cause false beats for a very good reason: the pressure on it from the = string may hold it against the bridge in such a way that it is not allowed to = oscillate.  In that case the source of the false beat might, in fact, be something else.  Sources of false beats may vary and may be compound.  A = piano may also have some of the problems (like loose pins) that sometimes = cause false beats and it may not have false beats.  Life is just that = complicated sometimes.    David Love davidlovepianos@comcast.net   -----Original Message----- From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On = Behalf Of Ric Brekne Sent: Saturday, December 17, 2005 5:23 PM To: pianotech Subject: false beats from??   Because for an explanation or theory to have any meaning, it has = to be consequent in dealing with the phononema it attempts to explain. = There are too many cases where this particular theory doesnt hold = up.  You can tighten a loose pin without solving the problem, you can = experience a clean string with absurdly loose pins.  The  <<sometimes>> effect of tightening a loose pin or putting pressure on it points (at = least me) in another direction.   If the tight pin theory is really valid, then in nearly all = cases... if not all...  a false beat will occur when a pin is loose and = it will be eliminated upon tightening the pin. Since this is quite clearly, = for not to say obviously not true... then the theory has a major = problem.   There is no doubt something that changes sometimes when = manipulating the pin/pin hole relationship in various fashions.  But it I = dont think its even close to been really shown that its simply a matter of the = pin being loose. Not by a long shot.   Cheers RicB   ---------------------   If applying CA glue or a screwdriver sometimes helps, how can = you not buy the loose pin theory at all?  Short of a defect in the = string itself (which can and does happen) false beats are almost always due to poor terminations and can occur on either side of the speaking length.  I = imagine a scientific explanation is not complicated though most of the evidence is empirical.  It is also true, however, that a loose pin will not always cause a = false beat. It would depend, I assume, on the pin's ability to move = freely.  The fixes mentioned below, while they might help, don't always because = they may not adequately address the problem.    David Love davidlovepianos@comcast.net = <mailto:davidlovepianos@comcast.net>     _______________________________________________= pianotech list info: = https://www.moypiano.com/resources/#archives </div> </body> </html>