Hi Ric, Also, remember that the top of the bridge cap is not parallel to the soundboard surface. The edge facing the speaking length is higher than the edge facing the back scale. On Don's film, you can see the first pulse coming toward the bridge like a Tsunami. It yanks violently on the bridge pin and one wonders why the bridge pin doesn't get pulled out after you play a few loud notes. Vladan ============================ #3. The string under tension will not attempt to define a straight line across the top of the bridge. It will be forced in that direction by the bridge pins. The string under tension will attempt to define as exact a fulcrum as it can, and will start exerting pressure onto the edges of the bridge to do so as soon as tension is applied. The reverse of this condition is that the string being forced flat across the bridge by the pins will attempt to counter this and part of that countering is to exert an upward force on the string on the outside side of each pin. The edges of the bridge are essentially fulcrum points, and as with all levers... there is an equal and opposite leverage exerted on both sides of the fulcrum. Cheers RicB __________________________________ Do you Yahoo!? Yahoo! Small Business - Try our new resources site! http://smallbusiness.yahoo.com/resources/
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