CP 70 Scale, was CP 70-80 regulation specs.

[Isaac sur Noos]

I've seen on the Yamaha owners manuals (on line they are available)2
differenet tuning curves for the CP 70 and CP 80 (if memory serves) .

possibli the scaling changed also with different generations of these
beasts.

Joe did you use buckskin on the hammers, I can't see the artificial
leather sold separately, in fact only "Hammer assembly" is listed in
my parts manual for CP 70-80.

The leather seem to be tense on the hammers. I wonder also if it can
be surfaced, needled, etc.

Greetings.





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PianoTech
Isaac OLEG
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oleg-i@noos.fr
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94400 Vitry sur Seine
tel: 033 01 47 18 06 98
fax: 033 01 47 18 06 90
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> -----Message d'origine-----
> De : pianotech-bounces@ptg.org
> [mailto:pianotech-bounces@ptg.org]De la
> part de Joseph Garrett
> Envoyé : mardi 4 novembre 2003 17:29
> À : pianotech@ptg.org
> Objet : Re:CP 70 Scale, was CP 70-80 regulation specs.
>
>
> Hi Joe!
>
> Would you be willing to share the "judicious re-scaling"?
> I've got to
> restring one of these soon and would like to do it right
> (I'm correcting
> some
> troubles caused by previous work...).
>
> Thanks,
> will wickham
>
> Will,
> Sure. I'll have to dig in my "archives" and see if I still
> have it. However,
> that doesn't mean that my "scale" will work for yours. There is a
> possibility that the measurements of speaking lengths might
> be different.
> Therefore, you'll have to do all the measuring to get the
> answer(s) you
> seek. Once I check those measurements against what I have,
> then I'll be able
> to give you the correct wire sizes, etc. As these critters are not a
> prevalent as regular "pianos" I don't know if they did their usual
> "changes/new-improved" thing and didn't tell anyone about
> it!<G> I do know
> that there are two specific models....one is the original
> and the other is
> MIDI. What the scale difference might be between the two is
> unknown w/o
> checking.
> Best Regards,
> Joe Garrett, RPT, (Oregon)
> Captain, Tool Police
> Squares Are I
>
>
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