Spring behavior

[Isaac OLEG]

I'll bet this home made too would be more practical in fact.

The little strain gauges have a needle that me be rest to zero between
measures if you want to be really accurate.
And their arm is very thin, a home made could have a shape better
adapted.

And they are to be handled with care.

And so on...

IZOREIL OLEG

> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Ron Nossaman
> Envoye : samedi 26 octobre 2002 00:31
> A : Pianotech
> Objet : RE: Spring behavior
>
>
>
> >I plan on purchasing a Strain Gage soon to actually
> measure the difference
> >and then be able to calibrate the
> >tension out of the piano. This pre-tensioning is proposed
> for wippen
> >assist spring tension as well.  I hope
> >to reduce the time needed to afine-tune the tension once
> installed and
> >gain the best spring curvature with visual
> >inspection.
>
> Hi Jon,
> A strain gage is probably overkill. You can set up a lever
> arm with a
> sliding weight and deflection pointer that will most likely
> tell you all
> you need to know with stuff you have lying around in the
> shop already.
> Calibrate it with your little electronic scale (which is
> already a mounted
> and calibrated strain gage). Just a thought.
>
> Ron N
>
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