More Scaling Questions

[Delwin D Fandrich]

Rob,

Now I understand. I've seen this on several other pianos but never on a Knabe. Yes, the
entire scale should be recalculated. And it is possible that, in this case, plain wire would
work better.

Del

----------------------------------------

Robert B Edwardsen wrote:

> Del:
>
> The third bridge on this Knabe is "behind" (closer to the tail) the treble bridge so the
> speaking length is actually longer than the notes directly above them in the scale.
> That's why I was thinking that plain wire might be a solution, of course the entire
> instrument would have to be rescaled, something I have never done before.  I have seen
> lots of third bridges, but they have always been in front of the treble bridge, which I
> might add seems to stifle the board a little bit.
>
> Rob
>
> Delwin D Fandrich wrote:
>
> > Rob,
> >
> > I'm not Jim, but we did just finish a 7' 8" Knabe with three bridges. In spite of my
> > general dislike for copper wrapped tri-chord strings I did keep that configuration on
> > this piano. The performance was acceptable, but it did confirm all of the reasons why
> > I don't like them on pianos of this, or any other, size. We have another Knabe of the
> > same size and type. This time I will be converting that section to bi-chord wrapped
> > strings. The speaking lengths are much too short for plain steel strings. With the
> > bi-chords I can blend unison tensions, string impedances and inharmonicity much better
> > than is possible with tri-chord wrapped strings.
> >
> > Del
> >
> > --------------------------------------------------------------------
> >
> > Robert B Edwardsen wrote:
> >
> > > Hi Jim:
> > >
> > > I'm going to restring/rescale an old Knabe grand (#30126) which has an auxiliary
> > > bridge for for the transition area to the bass which is behind the treble bridge.
> > > Have you ever seen such an arrangement?
> > > I won't have the piano in the shop until about August first so I don't have exact
> > > measurements at this time, but I'm wondering if this auxiliary bridge might be
> > > better off with plain wire.  It has tri-chord wound at this time.  It was restrung
> > > about 25 years ago so I'm not sure how close to the original scale the current
> > > wires are. I was wondering what you might do with such an arrangement.
> > >
> > > Thanks,
> > >
> > > Rob Edwardsen