Pianotech

  • 1.  Yamaha console tenor bridge unglued

    Registered Piano Technician
    Posted an hour ago
      |   view attached

    Hello all,

    I have a client with a 1990s Yamaha E108 console who is noticing some high frequencies in some of her tenor notes that are bothering her. I honestly couldn't hear them, but she said that they went away when I pressed on the bridge. After further investigation, I realized that the low end of the tenor bridge had become completely unglued from the soundboard (picture attached).

    My first thought is to loosen the tension of the strings, apply wood glue, and then to screw the bridge tightly to the soundboard from the back. Is there any reason not to repair it this way besides the unsightly screws at the back of the piano?



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    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    (250) 562-5358
    ps@pspianos.com
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  • 2.  RE: Yamaha console tenor bridge unglued

    Registered Piano Technician
    Posted an hour ago
    Peter.

    If that's all the separation there is, I would suggest you squeeze a bead of CA glue on the top of the bridge where the separation begins, allow it to seep down, and then push the bridge with your thumb for a minute to let the glue harden. If you have the accelerator, apply that after you press your thumb, and you should be able to let go after 10 or 15 seconds. 





  • 3.  RE: Yamaha console tenor bridge unglued

    Registered Piano Technician
    Posted an hour ago

    Hello Wim,

    That's interesting. I honestly haven't had much luck with thin CA glue for wood-to-wood applications. I'd be a little worried about making it harder to use wood glue in the future if the repair didn't work, but if it does work, that would certainly be the easiest and most economical for the client.



    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    (250) 562-5358
    ps@pspianos.com
    ------------------------------



  • 4.  RE: Yamaha console tenor bridge unglued

    Registered Piano Technician
    Posted 39 minutes ago
    Peter,

    Your solution sounds like a good one, with the addition of using a soundboard button for the screw to spread the load out on the soft spruce.

    You might call Yamaha America and see if they have any of the soundboard buttons and bridge screws that they use in some of their pianos.  At least, I think I've seen them in Yamaha soundboards before!

    I searched for 'Wood Washer' online and found some things.

    Don Mannino RPT