Pianotech

  • 1.  Jack alignment

    Member
    Posted 11-23-2020 09:39
    I don't work on this style action much and can never remember where to align the jack when there is no standard knuckle.

    Thanks


    ------------------------------
    Rex Roseman
    Akron OH
    330-289-2948
    ------------------------------


  • 2.  RE: Jack alignment

    Member
    Posted 11-23-2020 12:07
    I think what I have done is set the jack so it doesn't jam the stop felt when the action is at maximum dip and the knuckle doesn't hit the jack as it comes into check. Say ,420 dip. The jack should sit nicely in the window between the knuckle and the end of the rep lever. I don't think these cheat like round knuckles. You hold your hand just above the hammers and push the key firmly. The jack will slip off the knuckle if it is set too close to the edge.
    When set right, these actions play very nicely

    ------------------------------
    Keith Roberts
    owner
    Hathaway Pines CA
    209-770-4312
    ------------------------------

    Original Message


  • 3.  RE: Jack alignment

    Registered Piano Technician
    Posted 11-24-2020 08:25
    I think I would begin with a simple 90 degrees to the shank at rest height. Then modify as needed (if needed from there).

    Pwg

    ------------------------------
    Peter Grey
    Stratham NH
    603-686-2395
    pianodoctor57@gmail.com
    ------------------------------

    Original Message


  • 4.  RE: Jack alignment

    Member
    Posted 11-24-2020 21:37
    What brand of piano is that and what is the function of the rod running aside the end whippen ? interesting whippen design with springs looped to the jack and what looks like jack stop felt mounted on a post

    ------------------------------
    James Kelly
    Owner- Fur Elise Piano Service
    Pawleys Island SC
    843-325-4357
    ------------------------------

    Original Message