Hammers Head

[Rogerio Cunha]

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The first of all is to say:  I HOPE HAPPY EASTER TO ALL !

I need to apply a new set of Hammers head in a SCHIEDMAYER grand  that =
was restored by  a unauthorized person that changed the original hammers =
set by another.
The hammers set that is applied on the piano is out of order in all =
ways: bored with a lot of bad angles, with 12 different bore distances =
from the stringing point, the hammers aren't 90 degrees with the shank =
etc. etc
The problem is serious but I think that is a good job to apply a new =
hammers set.
To solve the problem from where to bore the each hammer I will try use =
the formula that Newton Hunt send to me some time ago: the bore distance =
from stringing point =3D the height of the strings - 2mm - the height =
from the key bed to the pin of the hammer shank flange. This I think =
will solve the problem
I need help to:
1 - Calculate the correct bore angle of the bass hammers heads. I think =
that may be the same angle to all bass hammers head. The angle from the =
tenor to the treble is easy because I may measure the trichords angle to =
each note.
2 - Calculate the distance from the shank center pin to glue the new =
hammers in order to obtain the correct stringing point.

If possible I would like also to read sometinhg about this all.=20

Thanks to all

Rogerio Cunha
IC Member of the Guild
rogeriocunha@openlink.com.br

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