Rippen stability

[Richard Brekne]

The laminated soundboard idea is exactly all about stability. Its supposed
to not crack as easy either. Knight pianos also employ this kinda
soundboard if I am not mistaken. On the side I have often wondered what
would happen if one was to try drying out one ply of such a panel (course
before glueing plys together) as one does for compression soundboards, and
then glueing it to the other ply (not dried) as one does with ribs (also as
in compression soundboards). Probably a stupid idea,,grin.. but I like to
take these blueberry trips in my mind from time to time..

Kristinn Leifsson wrote:
> 
> Dear list,
> 
> Rippen made a three part laminated soundboard.
> 
> What´s the story on that, and what variations do companies have in that
> regard, and through history?
> Does it matter much?
> 
> The Rippens I´ve seen have been tremendously stable in the long term.  Many
> of them eerily close to pitch after 10-15 years.  I don´t think that was
> because of humidity since other pianos have not been this stable here.
> They had some 24 laminations in the pin block.
> Might that contribute a lot compared to the soundboard?
> 
> Regards,
> 
> Kristinn Leifsson,
> Reykjavík, Iceland

-- 
Richard Brekne
I.C.P.T.G.  N.P.T.F.
Associate, PTG
Bergen, Norway