Why This Gasket on Hohner Piano 26 (HM-26)

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  • #6753
    AvatarLowboy
    Participant

    Hi,

    What is the purpose of this gasket on a Hohner HM-26? See photos below. Excuse the low quality of the photos.

    The thin upper strip is the key stop/pad for the black keys, but why even have the wide gasket underneath? This gasket seals each flow path for each note and is a likely source of leaks if your old HM-26 is leaking. But my question is, this gasket does not seem to serve a purpose. It basically plugs holes, which, if you just eliminated in the design/molding of the instrument, you would not need a gasket. So why have these holes in the first place, and why then cover them with a gasket?

    Lowboy

    Photo 1

    Photo 2

    Photo 3

    #6767
    AvatarLowboy
    Participant

    Well, I have since disassembled two more Hohner Piano models for cleaning and reconditioning and found that instead of this gasket, the instruments had a thin, black strip of hard plastic glued over these holes.

    I am still puzzled why these holes are here, only to be covered up by a gasket or thin sheet of plastic.

    Lowboy

    #6772
    AvatarAlan Brinton
    Participant

    It appears that the strip cushions the fall of the keys. We know that the keys of these models tend to clack. Is it possible that the holes absorb some of the sound of that?

    #6774
    AvatarAlan Brinton
    Participant

    Is it possible that a softer and thicker strip might reduce mechanical noise and/or make it easier to bend notes?

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