Concert Grand Trucks

[Jeff Stickney]

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Wim,
    I had a similar problem with a Kawai GS-80 and the bowed truck.  The
damper pedal was actually gouging the floor - although I suspect the pianist
had a heavy foot.  I put a jack and some 2x4 between the beam and the truck
and cranked until the truck was level and the legs raised a bit.  I then
measured that space between the beam and truck and built a 2x4 I-beam,
sprayed it black and installed it in place of the jack//2x4 structure.  This
piano was in a classroom, so I didn't have to worry that much about
aesthetics - I don't know if you'd want that extra piece in there on a
concert piano.  But it worked, and I never had anyone ask me about the extra
appendage.

Jeff Stickney, RPT
University of Montana
jpstickney@montanadsl.net

  -----Original Message-----
  From: caut-bounces@ptg.org [mailto:caut-bounces@ptg.org]On Behalf Of
Wimblees@aol.com
  Sent: Friday, March 28, 2003 5:42 PM
  To: caut@ptg.org
  Subject: Re: Concert Grand Trucks


  In a message dated 3/28/03 9:34:57 PM !!!First Boot!!!, edoss@utm.edu
writes:


    One of our pianists is tall and he said he didn't like playing the SD-10
because he couldn't get his legs under it.  It was shorter than the
Steinways.  I believe the weight of the grand pushes the three tips of the
truck closer to the floor, and consequently the middle of the truck bows up.

    Has anyone run into this problem?  Anyone encountered a short-legged
SD-10?


  One of the D's on our stage has a bowed truck. I tried solving this
problem by taking the weight off the legs, and tightening the bolts on the
center plate. But it didn't do the trick. The bolts that hold the little
plates under each leg are about 1" from the floor. I don't think, however,
that it lowers the keybed that much. I think we're only talking about an
inch or so. The problem with the SD10 might be more than it just sitting a
truck.

  If your pianist has a problem with putting his legs under the piano, it
might not be because the piano is sitting on a truck. I wonder if it is
because the keyframe is lower. If you have both pianos, check both
measurements. There are two measurements. One is from the floor to the top
of the keys. The other is the distance to the underside of the keyframe. It
would seem to me that a pianist would feel the difference if the keys were
not at the right height. But if one has longer legs, he would notice that
there is no room under the piano.

  Does anyone have one of each, and can check this out?

  Wim

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