those pesky swings

[tune4u@earthlink.net]

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Interesting question about what I see as an imperfect science, at best. =
I'm wondering if just testing the hammer for side-to-side motion while =
holding the butt (upright) or flange (grand) would be accurate enough to =
indicate wobble problems.

Here's a weird idea: Has anyone tried a drop of "pinblock restorer" in a =
worn birdseye to tighten it's grip on the pin? The most horribly =
wobbling hammers obviously occur when the pin has slipped out of one =
side of the flange, which surely indicates a worn birdseye, rather than =
redoing the bushings and repinning, I wonder if "dope" would work.

Alan Barnard
Salem, MO
  ----- Original Message -----=20
  From: Wimblees@aol.com=20
  To: Pianotech@PTG.org ; caut@ptg.org=20
  Sent: Monday, December 16, 2002 1:58 PM
  Subject: those pesky swings


  We all know that a hammer is supposed to swing 4 - 8 times. If it is =
less than 4, then the bushing is too tight. If it's more than 8, =
supposedly the bushing is not tight around the pin, and that might cause =
the hammer to wobble up to the string, which will eventually lead to =
uneven wear on the hammer, whcih creates tone problems, ya da, ya da. =20

  So here is the problem. I've got this hammer with only 3 swings. So =
that mean the bushing is too tight. Before I take the pin out, ream the =
bushing, and put in the same size pin, I put a little Protec on the =
bushing. But now, all of a sudden, I've got 10 - 12 swings. According to =
the above presumption, the bushing is now not tight around the pin any =
more.=20

  Or is it? Has the introduction of Protec shrunk the bushing to the =
point I need to ream and repin with a larger pin? Or do I leave the =
original pin in there, and allow the 10- 12 swings?=20

  Wim=20


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