Can anyone help me with a damper problem? The piano is a 1991 Schafer and Son 4'7" grand. The first two bi-chord notes in the bass scale (C2 and C#2) continue to sustain after the dampers have settled onto the strings. The dampers are in perfect alignment in all dimensions. There is plenty of damper follow. There is nothing binding in the back action. The damper wires move freely through the guide rail. The felt wedges are rather wide at the point and settle very near the top of the bi-chord strings; however, they look similar to all the other bi-chord wedges. The sustaining sound is definitely coming from C2 and C#2 and is not a sympathetic vibration from somewhere else. It seems like the dampers are coming down at a node on the strings because the sustaining sound appears to be a partial or harmonic of the fundamental. Do I need to needle the damper felt? Is this a job for damper pliers? Do the dampers require some modification? Would more weight on the underlever help? Is this a design flaw the customer must live with? Any help is greatly appreciated!! John Piesik San Diego Chapter PTG JPIESIK@ARINC.COM
This PTG archive page provided courtesy of Moy Piano Service, LLC