Capstan Location

[Isaac OLEG]

Hello,

I would say that the "magic line" is more important that lever
questions.

Then you will have to use 2 different whippen heel placements.

A bit complicated I guess.

But the use of a cardboard punching, cut so it is straight on the
front or the back side, on the balance rail, seem to work for evening
too different ratios on the key. Probably not a too thick one may help
to avoid wear of the balance hole, and the ratio is not really
corrected all along the key stroke , mostly the feel is evened (better
acceleration from the start for example).

I just played a bit on that on a little grand, and that helped. No
long time comments anyway.

Regards.

Isaac O Z



> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Richard Brekne
> Envoye : lundi 28 octobre 2002 20:05
> A : Pianotech
> Objet : Re: Capstan Location
>
>
> Farrell wrote:
>
> > What might be the consequences from having separate
> capstan lines for naturals and sharps to compensate for a
> global key ratio difference between sharps and naturals
> (assume small differences that do not require relocation of
> wippen heel)?
> >
> > Terry Farrell
> >
>
> Within limits I cant see any major problems here. Heck John
> Delacour even made a good case for putting balance rail
> pins all on the same line.. which to be sure takes the key
> ratio puzzle off in a differnt direction but illustrates what you
> can get away with if you want to. I seem to remember there
> was a good deal written about exactly this subject of
> seperate capstan lines for sharps and naturals about a year
> ago. Might be a good idea to chug through the archives a bit and see
> what you can dig up. Seem to remember it being pointed out
> that a straight line is most common because its easy to
> compensate for less whippen travel by increasing key height
> and dip. Weight differences caused were always dealt with directly
> by adjusting FWs. There is also the matter of the so called
> "magic line".
>
> RicB
>
> --
> 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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