low drop screw symptom

[antares]

Hello Bob,

It would seem that your hammer boring is not right.

EAR



On 19-mrt-05, at 16:22, Bob Hull wrote:

> Hello List,
>
> On a rebuild for a small but good quality grand I am
> replacing all of the action parts and having some
> doubts about the action configuration.   As I
> regulate samples the drop screw has to be lowered
> almost as far as it will go.
>
> Another relationship that appears to be off is the
> jack to hammershank relationship which is not
> perpendicular but rather it is more toward the B- side
> (Bob Hoff terminology).  How can I change this?
>
> The new (Renner) wippen with the closest match to the
> old wippen is the one with the added heel.  The old
> jack tender/toe seemed to interface better with the
> tilted let off rail than the new wippen does.  The new
> one gives a harder feeling ledge before let off.
> I don't like the way that feels.
>
> I  realize that more information may be necessary and
> I can supply it if asked.  One other thing I will add
> is that I had to lower the plate/string plane as much
> as I dared to get some downbearing.  I am adjusting
> the hammer bore because of this.
>
> So to restate my question:  What is indicated about an
> action geometry when drop screws must be lowered so
> far in order to attain suitable drop?
> I would appreciate your comments.
>
> Bob Hull
>
>
>
>
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friendly greetings
from
André Oorebeek

www.concertpianoservice.nl

"Where music is no harm can be"