[CAUT] Capstans to Tray

Jon Page jonpage at comcast.net
Sat Mar 24 08:40:46 MST 2007


IF the underlever capstan supports the damper for half blow
then it is inhibiting the effectiveness of the damper, the full weight of
the system won't be on the string.

The underlever should be suspended by the wire, no contact with
the tray or key end lifter felt.

If that is what Yamaha ascribes to, then they have it bass ackwards.
Someone does.

The top flange is secured to the wire such that the key end lifter felt
engages the tip of the underlever at half blow.   Damper lift timing
with the tray is done by either shimming underneath the tray felt
or by some sort of screw adjustment (capstan).

If underlevers are set evenly and some do not lift at half blow then that
is rectified by a shim underneath the key end lifter felt.

If the sostenuto tabs are uneven after the underlevers have been set
then a shim is added to the portion of the top flange which the sos tab
felt erests.


You will not convince me otherwise.
-- 

Regards,

Jon Page


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