Answer to puzzler

Alan Barnard tune4u@earthlink.net
Tue, 7 Feb 2006 19:26:22 -0600


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Didn't get very many responses to this puzzler, but I wil reveal the answer:

Conover upright, newish.
Customer complained that the soft pedal didn't seem to work.
Found that the prop stick was not in the hole. Put it in the hole and regulated it.
Tuned the piano. Drove away.
5 minutes later, I get a call on my cell: "Two notes don't work when I press the soft pedal."
Turn around, go back. Sure enough two notes (f3 and g3) don't work unless you hit the keys quite hard.
What was wrong?
Hint (things that were NOT wrong): No hammer interference or any problems with rubbing or interfering parts. No foreign objects. No keystick problems. No loose screws. No flange problems. Nothing broken.
Hint: The fix took one tool and about 30 seconds (after about 3 minutes of professional analysis and diagnosis, i.e., chin scratching, confused wonderment, and blank staring).

Answer: Letoff was so early (about 1/2 inch) that, with the rest rail lifted, there just wan't enough oomph in the key stroke to throw the hammer to the strings. I ended up adjusting letoff on most notes and increased aftertouch on the whole piano by replacing the front rail felts with thinner ones. 

"Why not just remove punchings?" you may ask. (Go ahead, ask, you know you're dying to...) The reason was that many notes had no punchings whatsoever under them, and many others had just one or two thin ones!

I don't think it was set up well at the factory and certainly not in the store.

Alan Barnard
Salem, Missouri
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