bobble heads rule(r)

[Richard Brekne]

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Well, it looks to me like we are looking at around a 4 mm
variance in hammer length. I'd say this would be a potential
source of problems. But I am not sure about the bobbling
problem. Do you find any correlation between bobbling
hammers and any particular length ?... just a thought.

Cheers Wim

RicB


Wimblees@aol.com wrote:

> 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




--
Richard Brekne
RPT, N.P.T.F.
UiB, Bergen, Norway
mailto:rbrekne@broadpark.no
http://home.broadpark.no/~rbrekne/ricmain.html


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