Pianotech

  • 1.  Cracked beam.

    Registered Piano Technician
    Posted 20 days ago
      |   view attached



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    Good day gentle fellow techs. A customer of mine has been offered this 100 year old Baldwin grand for free. Overall the piano look quite nice. I've only seen pictures so far. Without editorials about Baldwins or age, what are your thoughts about this cracked support post under the left side of the piano and bolted to the plate support nearest the bass strings.
    My partner suggested the beam may have cupped and forced the the side piece to split.
    The current owner claims in his 50 years of owning the piano, it has never been tuned. As someone who appreciates older pianos, my newest piano currently is 1915, the oldest 1900. I would like to help him save this old Baldwin if its possible.
    I welcome your constructive thoughts

    Edward Mastin RPT
    RPT
    Syracuse NY
    (315) 422-1291
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  • 2.  RE: Cracked beam.

    Registered Piano Technician
    Posted 20 days ago

    After lowering string tension you could fabricate and install a new support block.



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    Parker Leigh RPT
    Winchester VA
    (540) 722-3865
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  • 3.  RE: Cracked beam.

    Member
    Posted 19 days ago

    check for a cracked plate 



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    James Kelly
    Owner- Fur Elise Piano Service
    Pawleys Island SC
    (843) 325-4357
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  • 4.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago

    Ed,

    You've looked it over VERY carefully?  There's a reason for everything. 

    Peter Grey Piano Doctor 



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    Peter Grey
    Stratham NH
    (603) 686-2395
    pianodoctor57@gmail.com
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  • 5.  RE: Cracked beam.

    Posted 19 days ago

    Imagine the forces: The nose bolt connects the plate strut (above) to the beam (below), counteracting the tendency of the plate strut to bow upward because of the string tensions.

    Why did the connection fail?

    Did someone try to increase bearing by cranking down the nose bolt?

    What are those scars under the beam? Was the piano dropped and something forced up against the beam?



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    Ed Sutton
    ed440@me.com
    (980) 254-7413
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  • 6.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago

    I recall seeing something like this years ago. Plate was cracked in strut right where the bolt came up through.  

    Look carefully.

    Peter Grey Piano Doctor 



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    Peter Grey
    Stratham NH
    (603) 686-2395
    pianodoctor57@gmail.com
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  • 7.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago

    it doesn't seem likely that it's the result of a cracked plate. More likely it's the result of extreme humidity swings that are characteristic of that part of the country and the beam just split and took the block of wood that holds the nose bolt along with it. To repair it you'll have remove the strings and the plate because you can't remove the nose bolt without removing the plate, I don't think

    Once you remove the plate it's a fairly simple repair to pull the beam ando the block back together, and then insert some dowels to prevent it from pulling apart again.

    If what the customer says is true, that the Piano hasn't been tuned in 50 years, it seems unlikely that this happened as a result of somebody trying to increase the bearing.

    If in fact you don't find a plate crack I would just repair it as outlined. It probably needs all that work anyway.



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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 8.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago

    Actually, you probably could repair it without de stringing it now that I think about it. If you take off the four bolts that hold the block of wood into which the nose bolt is turned, and take the nose bolt cap off, you should be able to just pull the nose bolt and the block of wood down through the bottom of the piano. Then just make a new block of wood for the nose bolt, drill it to receive the nose bolt, drill the holes for the four bolts in the same position, screw the nose bolt into the block of wood, repair the beam by pulling it together with some clamps and glue. Insert some dowels into the beam to secure it. Then just insert the nose bolt back up through the bottom of the piano and replace the bolts into holes you've pre-drilled into the block. I suppose it might be a good idea to remove the tension on the strings, but I'm not sure it's even necessary to do that. When you're adjusting the nose bolt after the Piano was strong you loosen the cap effectively. The nose bolt is no longer attached to the plate. But if you feel more comfortable, take the tension down first. That might be a problem with really old strings he may break a few taken it back up so depends on what your overall approaches is.



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    David Love RPT
    www.davidlovepianos.com
    davidlovepianos@comcast.net
    415 407 8320
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  • 9.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago

    Ed, If you don't see any other issues with the plate this might be a candidate for a rebuild. 

    This might be a case of a nose bolt that is too short.  If the nose bolt only goes into the support block a short distance the wood might not have been strong enough to withstand the upward force.  Just gluing the block together and installing a nose bolt that is 1 to 2 inches longer might be enough, though replacing the entire support block would be better.



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    Blaine Hebert RPT
    Duarte CA
    (626) 390-0512
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  • 10.  RE: Cracked beam.

    Registered Piano Technician
    Posted 19 days ago
    Unfortunately, I have not yet seen the piano in person. I only have the pics as a reference. I am trying to arrange a visit to see it before my customer takes the piano.
         As was mentioned on this thread, there had to be a reason. I've heard it's been moved a lot and the odds of it being dropped go up exponentially.
          You all are confirming the thoughts I've had about a piano I haven't seen yet and sounds like I should steer my customer away from.
    Thank you!