>Now imagine the bar stock bent into an L shape welded on edge on the sheet >metal. Near the bend, the corner of the L, the bar stock will be very >strong and resistant to rolling. It has the leg behind it to support the >direction of the loading. Exactly. It has outriggers, and doesn't roll. It rotates. >But as force is applied closer to the ends of the legs it will loose >strength and rotate easier in that local area. > >Dean May Yes, but this isn't usually a problem in pianos. It's not the bridge's job to control torque effects on it's ends, it's the soundboard assemblies job to provide a platform under the bridge that supports it, and the designer's job to make an attempt to insure that it does. There isn't anything in a bridge/string system to torque the bridge. Bridge torque comes from off center load support, and/or soundboard failure and deformation. Ron N
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