Hi again. Well, like I say... Do the measurements as well as doing the math. Make observations that put /all/ claims to the test, instead of simply hopping from one set of taken for granteds to another. If you do actually observe all the stated relative conditions carefully on enough pianos then you will find the exact quandry that so many have cited through the years so many times. Against what seems should be so... the strings will indeed <<climb>> the pins one way or the other and the side bearing math model is quite obviously in error or not a complete enough model to describe the condition adequatly. And, if you do actually take the time to see how long each string seating job stays seated... you will find that most often they stay down quite long. "There is a diety hiding in just about every dark corner of what is commonly refered to as knowledge" Alfred Lodge RicB In my experience, the only time strings climb pins is when there is a notch carved in the bridge pin from the friction of the string over time. Then the string will want to seat itself in the notch in the pin. As the bridge is indented from friction (and/or string tapping) the notch on the bridge pin no longer aligns itself with the string being seated on the bridge top and it can appear that the string is "climbing" the pin. Tapping down the string in such cases tends to be a temporary measure as the string will want to seat itself in the groove cut into the bridge pin. Otherwise, Ron is correct, the bearing combined with the bridge pin angles will keep the string seated firmly on the bridge. Belief is the wound that knowledge heals. David Love davidlovepianos@comcast.net <mailto:davidlovepianos@comcast.net>
This PTG archive page provided courtesy of Moy Piano Service, LLC