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Damper Underlever Springs, Simplified & Redux

  • 1.  Damper Underlever Springs, Simplified & Redux

    Registered Piano Technician
    Posted 12-14-2019 15:01
    Has anyone done initial measurements for what existed at guidepoints, and seen something like this? #1 should be ~35.
    #1: 16.3g
    #30 (mid-scale): 16.2g
    #54 (end of springs): 12.4
    #55 (no spring): 6.0

    These confuse me; of three readings which don't make sense, which should I choose to evaluate the other two? #1 @ 50% of conventional, #2 the same as bottom of the scale, or #54 which is double what it should be.

    Any ideas on this? I'm just going to do a straight tape from #1 as is through a #54 (to match #55).

    TIA
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    William Ballard RPT
    WBPS
    Saxtons River VT
    802-869-9107

    "Our lives contain a thousand springs
    and dies if one be gone
    Strange that a harp of a thousand strings
    should keep in tune so long."
    ...........Dr. Watts, "The Continental Harmony,1774
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