[pianotech] Art Case Bechstein

[David Boyce]

I don't know Terry. This type of action, which I have encountered before 
in a Bechstein, has BOTH the ordinary coil jack springs AND additional 
spring & loop. Whether it made any actual difference to the efficiency 
of repetition, I doubt.

Best regards,

David.
On 31/10/2012 15:13, pianotech-request at ptg.org wrote:
> And what do those springs do? Simply add more spring in the same 
> manner as the more common coil jack spring?
>
> Terry Farrell

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