Actual piano question: Pin strength and chipboard Yamahas

[Roger Jolly]

Not that simple, you need the right balance between, tensile strength and 
rigidity.   Now the trick is to get two engineers to agree.  Once the pin 
gets in the field, we tech's bitch that there is too much flex.
Oh well, back to the drawing board.
Roger


> >    Which made me wonder: Has anyone done a systematic
> > test of all the available pin brands for torsion? This
> > would be quite easy if one had accesss to a
> > metallurgical lab (University?) where those gadgets
> > which twist samples until they break are used. I would
> > imagine that the pin with the highest twist-breaking
> > strength and the most uniform diameter would be my
> > choice!
>
>
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