>I was sitting on the floor(the tables were too small to fit an action) of >a Chinese restaurant filling the hammers of an MX 80 Yamaha 42" console >when I noticed something I had never seen or noticed before: the hammer >rest rail "felt" was actually foam rubber. Well, the shanks do land >softly...:-) It made me wonder about the quality of materials in the rest >of the piano. > >Didn't have time to do a full inspection as I was hustling to get the >piano back together in a fairly dark environment before the restaurant >opened(made it with 5 minutes to spare). Like most Yamahas that I've >tuned, it had very few strings with false beats and the pins were >consistent. But how long before it starts to self-destruct? Especially >since it is a Disklavier and gets played at least 8 hours a day... > >Dave Stahl On Disklaviers verticals with the hammer sensors, the shanks can bounce high enough off a felt rest rail on return to record another keystroke when none was intended. I think the foam is just to limit the bounce, not to save a nickle on cost over real cloth. Remember the ones with the little pneumatic braking cylinders mounted on the rail? Ron N
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