At 10:58 PM 12/17/2006, you wrote: >Susan - >can you explain how loose pinning would create such a condition? > >David Skolnik Sure - if the hammer flange friction is too small, the hammer has too little inertia when it touches the backcheck - it's too bouncy and can escape from the check. I was fighting this failure to check in a D which had heavy use (in a roaring hurry - I saw it for the first time a couple of days before an event). I reshaped the tails, altered the backcheck angle, slightly roughened the tails of some of the more obstinate hammers, and left the springs just a tad weaker than I at first wanted them to be - and still a few hammers wouldn't check. So I gave them the swing test, and got about 15! Repinned to 3 (which became four or five within a few days), and the piano became controllable and the notes would go into check. I wanted to repin all the hammers, but had no time before the guest lecturer was to use it - did them all the next year. The piano had a much less worn out feeling while playing - less flyaway. Susan
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