Keyboard frame question

[Isaac OLEG SIMANOT]

Hello,
Thanks for responding,

Yes I was asking about that feet problem too.

I too have shimmed (wood) under the feet, but I am not sure If I was
correct.

Looking at the old action frame, the feet does not seem to be higher
anywhere (but the rails are open).

What I wonder is if the original setup when installing new wedges / new
action frame, or new wedges / new keyboard is perfectly flat, what is giving
the spring at the extremity of the keyboard ?
Is the underside of the rail thinned at the extremity (did not mesure, I
will tomorrow )?

The rail show saw marks, so it is somewhat flexible. I am assuming we don't
have to 'force ' on the extreme glide bolts (as for any one) in order to
have the extreme of the key frame showing his play.

Besides, I was told (by S&S techs) to make glide regulation without the
blocks installed, that could mean that I will have these two extreme bolts a
little lower, helping that springy contact between the front extreme
keyboard .
We try to have a firm contact there (under the front of key frame) so no
play (no knock) will install himself with times ?

Interesting idea to use minute Epoxy, Roger, do you mix some graphite powder
or Teflon in this, I may admit I would be afraid of squeaks or absence of
friction there, and minute epoxy is not very hard ?

Regards.

Isaac






> -----Message d'origine-----
> De : owner-pianotech@ptg.org [mailto:owner-pianotech@ptg.org]De la part
> de kam544@flash.net
> Envoyé : dimanche 21 octobre 2001 08:35
> À : pianotech@ptg.org
> Objet : Re: Keyboard frame question
>
>
> >...Can you tell me in what order you screw the frame on S&S,
> >is the order important ?
> >
> >with the last job I've done I had to change the entire action
> frame ,I had
> >to rethink the way the frame is adapted to the keyboard, and I
> discover I am
> >not sure if the extremes center feet (of the action frame) are
> to be a tad
> >higher in order to help the keyboard extremity to be springy
> (you know the
> >little play under the blocks)...
> >Isaac
>
> Isaac, List,
>
> Roger may have answered the concerns you have asked, but this is what I
> envisioned about the particular you were wanting to know above.
>
> The feet of the action brackets sometimes don't all sit flush on the
> keyframe.  To counter this condition I use balance rail punchings to take
> up any excess space.
>
> That way, when the action feet screws are installed to secure the action
> and its parts to the keyframe, there will be no flex, only a secure
> platform marriage of the two items.
>
> If I am in error, no harm.  This is still an excellent tip for those who
> have wondered about such a thing.
>
> Keith McGavern
> Registered Piano Technician
> Oklahoma Chapter 731
> Piano Technicians Guild
> USA
>
>
>
>
>
>