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Early Steinway Upright Action: Sostenuto adjustment question

  • 1.  Early Steinway Upright Action: Sostenuto adjustment question

    Registered Piano Technician
    Posted 4 hours ago

    I am currently finishing action part replacement on an 1896 Steinway Style S Upright Piano. 

    It features the hook style sostenuto system where there is an actual hook attached to the damper levers. I developed a way to move the old hooks to the new damper levers so they are in almost exactly the same place as they were originally. 

    My question involves the adjustment (wire bending) of these hooks so that they work as they should. It seems to be pretty narrow window in which to get proper function. I would be curious to hear of other experiences. 

    Thank you.

    Herb Lindahl, CT Chapter 



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    Herb Lindahl RPT
    South Windsor CT
    (860) 922-6739
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