keyframe return spring

[Ron Overs]

>Here's a sweet idea from the old Bechstein I've 
>referenced in a couple of other posts; the 
>return spring has a roller bearing on the end. 
>How humane and enlightened is that? Any body 
>seen this feature before?

Yes Allen, Blüthner have used the same idea for a 
long time. Don't know if they continue to use it 
in their current instruments.

I considered the idea for our piano, but I've 
found another solution which yields very low 
spring/action frame friction, and is a cheaper 
solution.

Ron O.
-- 
OVERS PIANOS - SYDNEY
    Grand Piano Manufacturers
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Web http://overspianos.com.au
mailto:ron at overspianos.com.au
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