[CAUT] stack fit to keyframe

[Roger Jolly]

>ne he had better things to do with his time and money!  Even the Schwander 
>B action which dominated the market till the mid 1980's ( Bechstein, 
>Bösendorfer, Kawai etc. etc.) was never patented so far as I can tell.  It 
>would be interesting to know why all the makers suddenly switched back to 
>the old Herz design within a space of a couple of years -- or does 
>Bösendorfer still fit the Schwander?
>
>[]
>
Hi JD,
             Talking to Renner, they mentioned that they no longer made the 
Schwander design.  It seems ever one want's to "copy" Steinway's Butterfly 
rep spring.
Personally I prefer the Schwander, because of the control of sliding 
friction, and consistent rep spring tension.
New Bechstein's and one new Bossendorfer that I have worked on, had 
Butterfly springs.
I think it is a question of economics, vs numbers ordered.  They will make 
the Schwander style action if the numbers are right.

Regards Roger 
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