[pianotech] Keydip on Steinway pianos

[Jon Page]

>Why is the keydip greater for Steinway S, M, and L pianos than for 
>Steinway B and D pianos?  The keydip for the B and D is 390mm, while 
>the keydip for the S, M, and L is 420 mm.


The info I have is:
S, M, L, B  @ 9.5 mm
C, D  @ 10 mm

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Regards,

Jon Page
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