bobble heads rule(r)

[ted simmons]

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Wim, before you go any further, try this.  Take one hammer near the middle
of the piano and turn down the drop screw as far as it will go.  Next, set
the let-off on that note.  Now re-set the drop.  I've had this situation
before and this was the solution.   Now do the rest of the regulation steps.

Ted Simmons
Merritt Island, FL

From: Wimblees@aol.com
Reply-To: College and University Technicians <caut@ptg.org>
Date: Wed, 16 Oct 2002 13:47:04 EDT
To: Pianotech@PTG.org, caut@ptg.org
Subject: bobble heads rule(r)


Thanks to all that offered advice on solving my problem

First a couple of observations.

These are new hammers shanks & flanges, but I didn't hang them.
I had previously shaped the tails
On the first four notes in the treble, I roughed the tails, filed down the
edges of the tail, and reset the back checks, making the rake more "flat," I
also allowed the hammer to check lower and reduced the rep spring. That
helped some, but not enough. I looked at some of the other suggestions, but
none really seem to apply. Out of the piano, the action behaves perfectly.
But once it is in the piano the bobbling problem doesn't go away.

Finally I took some measurements, and maybe this is the problem. What is
supposed to be the distance from the center pin to the end of the hammer?
Here is what I found.
note 1      5 1/4
note 26       5 1/8
note 27       5 3/16
note 41     5 1/4
note 54       5 7/32
note 55     5 9/32
note 72     5 1/4
(As I said, I didn't hang these hammers, and neither did Steinway)

Can any one tell me if these measurements are related to the problem?

Wim 



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