Yamaha upright diskclavier on heavy tour?

[Isaac OLEG]

John,

That is a good idea and it is necessary for many pianos, but the
Disclaviers are really well build with a strong back.

If they are to be installed on larger rollers, care must be taken to
use a well dimensioned model, or to brace some L shaped metal framing
(not very nice looking but could be done with a support for a stool.

I've find Yamaha U series verticals to be well resistant to moving,
assuming they are lying flat always, and not moved hardly.

But for sure when they are installed on the rolling tool for moving,
the weight is applied to the lower part of the plate and the
soundboard  is compressed a bit, despite the wood bracing of the back
posts.


hope it is clear enough.

Regards

Isaac O Zoreil


> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Jon Page
> Envoye : dimanche 27 octobre 2002 12:52
> A : Pianotech
> Objet : RE: Yamaha upright diskclavier on heavy tour?
>
>
> Something else you may want to consider is bracing the
> structural mass to
> diminish
> torsional movement of the case putting it out of tune.
>
> The fact that the piano rests on four wheels and a
> variation in floor level
> can put a strain on the case
> and affect the tuning.
>
> Someone at a university had a piano which was in constant
> relocation and
> suffered tuning instability.
> Bracing the back posts made the tuning less unstable.
>
> Perhaps a piece of 1" Luan (a finish-grade, sanded plywood)
> can be attached
> to the back to offer this more rigid
> support for moving and placement on different flooring
> surfaces. The
> sections between the back post
> could be cut out for sound with all edges 1/4 bead
> rounded/routed, then
> stained and a protective finish
> applied for looks.  Leave ;room at the top for the lid to
> be able to open.
> Regards,
>
> Jon Page,   piano technician
> Harwich Port, Cape Cod, Mass.
> mailto:jonpage@attbi.com
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>
>
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