Designing a pedal assist for a grand? to pedal damper with left foot
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Remember that I'm thinking about the back side of the pedal - which makes a lever idea possible because we want to push UP the back side to lift the dampers. That way it will be pushing between the floor (support) and the underside of the back of the pedal.
Getting the mechanical linkage to wrap around behind could be an interesting challenge, which is why I like the idea of a solenoid (like in a player piano system) connected to a pedal or knee switch to activate. It would be "all or nothing" which is simpler than a servo that would allow for half pedal and more sensitive movement. Again, because it is a grand piano, there is access to the back of the pedal to apply lift between that and the floor.
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